Nexavar

Generic Name: sorafenib
Brand Name: Nexavar
Drug Class: Antineoplastics, VEGF Inhibitor, Antineoplastic Tyrosine Kinase Inhibitors

side effects drug center nexavar (sorafenib) drug

PROFESSIONAL CONSUMER SIDE EFFECTS

Drug Description

What is Nexavar and how is it used?

Nexavar is a prescription medicine used to treat:

a type of liver cancer called hepatocellular carcinoma (HCC) that cannot be removed by surgery
a type of kidney cancer called renal cell carcinoma (RCC)
a type of thyroid cancer called differentiated thyroid carcinoma (DTC) that can no longer be treated with radioactive iodine and is progressing

It is not known if Nexavar is safe and effective in children.

Do not take Nexavar if you:

are allergic to sorafenib or any of the other ingredients in Nexavar. See the end of this leaflet for a complete list of ingredients in Nexavar.
have squamous cell lung cancer and receive carboplatin and paclitaxel.

Before taking Nexavar, tell your healthcare provider about all of your medical conditions including if you:

For females who are able to become pregnant:

For males with female partners who are able to become pregnant:

have heart problems including a condition called “congenital long QT syndrome”
have chest pain
have abnormal magnesium, potassium, or calcium blood levels
have bleeding problems
have high blood pressure
plan to have any surgical procedures or have had recent surgery
are pregnant or plan to become pregnant. Nexavar may harm your unborn baby. Tell your healthcare provider right away if you become pregnant during treatment with Nexavar.
- Your healthcare should do a pregnancy test before you start treatment with Nexavar.
- Use effective birth control (contraception) during your treatment with Nexavar and for 6 months after the last dose of Nexavar.
- Use effective birth control (contraception) during your treatment with Nexavar and for 3 months after the last dose of Nexavar.
are breastfeeding or plan to breastfeed. It is not known if Nexavar passes into your breast milk. Do not breastfeed during treatment with Nexavar and for 2 weeks after receiving the last dose of Nexavar.

Tell your healthcare provider about all the medicines you take, including prescription and over-thecounter medicines, vitamins, and herbal supplements.

Especially tell your healthcare provider if you take the medicine warfarin.

What are the possible side effects of Nexavar?

Nexavar may cause serious side effects, including:

decreased blood flow to the heart, heart attack and heart failure. Get emergency help right away if you get symptoms such as chest pain, shortness of breath, racing heartbeat, swelling in lower legs, feet and abdomen, feel lightheaded or faint, tiredness, nausea, vomiting, or sweat a lot.
increased risk of bleeding. Bleeding is a common side effect of Nexavar that can be serious and can lead to death. Tell your healthcare provider right away if you have any signs of bleeding during treatment with Nexavar:
- vomiting blood or if your vomit looks like coffee-grounds
- pink or brown urine
- red or black (looks like tar) stools
- heavier than normal menstrual cycle
- unusual vaginal bleeding
- frequent nose bleeds
- coughing up blood or blood clots
- bruising
high blood pressure. High blood pressure is a common side effect of Nexavar and can be serious. Your blood pressure should be checked every week during the first 6 weeks of starting Nexavar. Your blood pressure should be checked regularly and any high blood pressure should be treated during treatment with Nexavar.
skin problems. A condition called hand-foot skin reactions and skin rash are common with Nexavar treatment and can be severe. Nexavar may also cause severe skin and mouth reactions that can be life-threatening. Tell your healthcare provider if you have any of the following symptoms:
- skin rash
- skin redness
- pain or swelling
- blistering and peeling of your skin
- blistering and peeling on the inside of your mouth
- blisters on the palms of your hand or soles of your feet
an opening in the wall of your stomach or intestines (gastrointestinal perforation). Tell your healthcare provider right away if you get fever, nausea, vomiting or severe stomach (abdominal) pain.
possible wound healing problems. If you need to have a surgical procedure, tell your healthcare provider that you are taking Nexavar. Nexavar may need to be stopped until your wound heals after some types of surgery.
changes in the electrical activity of your heart called QT prolongation. QT prolongation can cause irregular heartbeats that can be life-threatening. Your healthcare provider may do tests during your treatment with Nexavar to check the levels of potassium, magnesium, and calcium in your blood, and check the electrical activity of your heart with an electrocardiogram (ECG). Tell your healthcare provider right away if you feel faint, lightheaded, dizzy or feel your heart beating irregularly or fast during your treatment with Nexavar.
liver problems (drug-induced hepatitis). Nexavar may cause liver problems that may lead to liver failure and death. Your healthcare provider will do blood tests to check your liver function regularly during your treatment with Nexavar. Tell your healthcare provider right away if you develop any of the following symptoms:
- yellowing of your skin or the whites of your eyes
- dark “tea-colored” urine
- light-colored bowel movements (stools)
- worsening nausea or vomiting
- pain on the right side of your stomach area
- bleeding or bruising more easily than normal
- loss of appetite
change in thyroid hormone levels. If you have differentiated thyroid cancer, you can have changes in your thyroid hormone levels during treatment with Nexavar. Your healthcare provider may need to change your dose of thyroid medicine during treatment with Nexavar. Your healthcare provider should check your thyroid hormone levels every month during treatment with Nexavar.

The most common side effects of Nexavar include:

diarrhea (frequent or loose bowel movements)
tiredness
infection
hair thinning or patchy hair loss
rash
weight loss
loss of appetite
nausea
stomach-area (abdomen) pain
low blood calcium levels in people with differentiated thyroid cancer

Nexavar may cause fertility problems in males. This may affect your ability to father a child. Talk to your healthcare provider if this is a concern for you.

These are not all of the possible side effects of Nexavar. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

DESCRIPTION

NEXAVAR, a kinase inhibitor, is the tosylate salt of sorafenib.

Sorafenib tosylate has the chemical name 4-(4-{3-[4-Chloro-3-(trifluoromethyl)phenyl]ureido}phenoxy)N2methylpyridine- 2-carboxamide 4-methylbenzenesulfonate and its structural formula is:

NEXAVAR (sorafenib) - Structural Formula Illustration

Sorafenib tosylate is a white to yellowish or brownish solid with a molecular formula of C₂₁H₁₆ClF₃N₄O₃ x C₇H₈O₃S and a molecular weight of 637.0 g/mole. Sorafenib tosylate is practically insoluble in aqueous media, slightly soluble in ethanol and soluble in PEG 400.

Each red, round NEXAVAR film-coated tablet contains sorafenib tosylate (274 mg) equivalent to 200 mg of sorafenib and the following inactive ingredients: croscarmellose sodium, microcrystalline cellulose, hypromellose, sodium lauryl sulphate, magnesium stearate, polyethylene glycol, titanium dioxide and ferric oxide red.

Indications & Dosage

INDICATIONS

Hepatocellular Carcinoma

NEXAVAR^® is indicated for the treatment of patients with unresectable hepatocellular carcinoma (HCC).

Renal Cell Carcinoma

NEXAVAR is indicated for the treatment of patients with advanced renal cell carcinoma (RCC).

Differentiated Thyroid Carcinoma

NEXAVAR is indicated for the treatment of patients with locally recurrent or metastatic, progressive, differentiated thyroid carcinoma (DTC) that is refractory to radioactive iodine treatment.

DOSAGE AND ADMINISTRATION

Recommended Dose For Hepatocellular Carcinoma, Renal Cell Carcinoma, And Differentiated Thyroid Carcinoma

The recommended daily dose of NEXAVAR is 400 mg (2 x 200 mg tablets) taken twice daily without food (at least 1 hour before or 2 hours after a meal). Treatment should continue until the patient is no longer clinically benefiting from therapy or until unacceptable toxicity occurs.

Dose Modifications For Adverse Reactions

Temporary interruption of NEXAVAR is recommended in patients undergoing major surgical procedures [see WARNINGS AND PRECAUTIONS].

Temporary interruption or permanent discontinuation of NEXAVAR may be required [see Table 1 and WARNINGS AND PRECAUTIONS].

Table 1: Adverse Reactions Requiring Dose Modification of Nexavar

Adverse Reaction	CTCAE Grade	Action	Dose Reduce and Resume Nexavar
Cardiovascular Events
Cardiac Ischemia and/or Infarction	Grade 2 and above	Permanently discontinue	Do not resume
Congestive Heart Failure	Grade 3	Interrupt ^a until ≤ Grade 1	Decrease one dose level^{b c}
Congestive Heart Failure	Grade 4	Permanently discontinue	Do not resume
Hemorrhage requiring medical intervention	Grade 2 and above	Permanently discontinue	Do not resume
Hypertension	Grade 2 asymptomatic and diastolic pressure 9099 mm Hg	Treat with anti-hypertensive therapy	Continue NEXAVAR dosing as scheduled and closely monitor blood pressure.
	Grade 2 (symptomatic/persistent) OR Grade 2 symptomatic increase by >20 mm Hg (diastolic) or >140/90 mm Hg if previously within normal limits OR Grade 3	Interrupt until symptoms resolve and diastolic blood pressure < 90 mm Hg	Treat with anti-hypertensives. Reduce dose to one dose levelc when resumed. If needed, reduce another dose level. ^{b c}
	Grade 4	Permanently discontinue	Do not resume
Gastrointestinal Perforation	Any grade	Permanently discontinue	Do not resume
QT Prolongation	Monitor electrolytes and electrocardiograms If QTc is >500 milliseconds or for an increase from baseline of 60 milliseconds or greater	Interrupt Correct electrolyte abnormalities (magnesium, potassium, calcium).	Use medical judgement before restarting
Severe DILI	> Grade 3 ALT in the absence of another cause^d AST/ALT > 3xULN with bilirubin > 2xULN in the absence of another cause^d	Permanently discontinue	Do not resume
Non-hematological toxicities	Grade 2	Treat on time	Decrease one dose level^c
	Grade 3
	1^st occurrence	Interrupt until ≤ Grade 2	Decrease one dose level^c
	No improvement within 7 days or 2^nd or 3^rd occurrence	Interrupt until ≤ Grade 2	Decrease two dose levels^c
	4^th occurrence	Interrupt until ≤ Grade 2	Decrease three dose levels^c
	Grade 4	Permanently discontinue	Do not resume
ULN-upper limit of normal; DILI-drug induced liver injury ^a If no recovery after 30 day interruption, treatment will be discontinued unless the patient is deriving clinical benefit ^b If more than 2 dose reductions are required, treatment will be discontinued ^c Hepatocellular and renal cell carcinoma (400 mg daily, 200 mg daily or 400 every other day) and thyroid cancer (800 mg to 600 mg, 400 mg, and 200 mg). See details below for reduction per indication ^d In addition, any grade Alkaline phosphatase increase in the absence of known bone pathology and Grade 2 or worse Bilirubin increase; Any 1 of the following: INR ≥ 1.5, Ascites and/or encephalopathy in the absence of underlying cirrhosis or other organ failure considered to be due to DILI.

Dose Modifications For Hepatocellular Carcinoma And Renal Cell Carcinoma

When dose reduction is necessary, the NEXAVAR dose may be reduced to 400 mg once daily. If additional dose reduction is required, NEXAVAR may be reduced to a single 400 mg dose every other day [see WARNINGS AND PRECAUTIONS].

Suggested dose modifications for dermatologic toxicities are outlined in Table 2.

Table 2: Suggested Dose Modifications for Dermatologic Toxicities in Patients with Hepatocellular Carcinoma, Renal Cell Carcinoma and Differentiated Thyroid Carcinoma

Dermatologic Toxicity Grade	Occurrence	NEXAVAR Dose Modification
		Hepatocellular and Renal Cell Carcinoma	Differentiated Thyroid Carcinoma
Grade 2: Painful erythema and swelling of the hands or feet and/or discomfort affecting the patientâ€™s normal activities	1^st occurrence	Continue treatment with NEXAVAR and consider topical therapy for symptomatic relief. If no improvement within 7 days, see below	Decrease NEXAVAR dose to 600 mg daily If no improvement within 7 days, see below
	No improvement within 7 days at reduced dose or 2nd and 3rd occurrence	Interrupt NEXAVAR treatment until toxicity resolves to Grade 0â€“1	Interrupt NEXAVAR until resolved or improved to Grade 1
		When resuming treatment, decrease NEXAVAR dose by one dose level (400 mg daily or 400 mg every other day)	If NEXAVAR is resumed, decrease dose (see Table 3)
	4^th occurrence	Discontinue NEXAVAR treatment
Grade 3:Moist desquamation, ulceration, blistering, or severe pain of the hands or feet, resulting in inability to work or perform activities of daily living	1^st occurrence	Interrupt NEXAVAR treatment until toxicity resolves to Grade 0â€“1	Interrupt NEXAVAR until resolved or improved to Grade 1
	1^st occurrence	When resuming treatment, decrease NEXAVAR dose by one dose level (400 mg daily or 400 mg every other day)	NEXAVAR is resumed, decrease dose by one dose level (see Table 3)
	2^nd occurrence	Interrupt NEXAVAR treatment until toxicity resolves to Grade 0â€“1	Interrupt NEXAVAR until resolved or improved to Grade 1
		When resuming treatment, decrease NEXAVAR dose by one dose level (400 mg daily or 400 mg every other day)	When NEXAVAR is resumed, decrease dose by 2 dose levels (see Table 3)
	3^rd occurrence	Discontinue NEXAVAR treatment

Dose Modifications For Differentiated Thyroid Carcinoma

Table 3: Recommended Doses for Patients with Differentiated Thyroid Carcinoma Requiring Dose Reduction

Dose Reduction	NEXAVAR Dose
First Dose Reduction	600 mg daily dose	400 mg and 200 mg 12 hours apart (2 tablets and 1 tablet 12 hours apart â€“ either dose can come first)
Second Dose Reduction	400 mg daily dose	200 mg twice daily (1 tablet twice daily)
Third Dose Reduction	200 mg daily dose	200 mg once daily (1 tablet once daily)

When dose reduction is necessary for dermatologic toxicities, reduce the NEXAVAR dose as indicated in Table 2.

Following improvement of Grade 2 or 3 dermatologic toxicity to Grade 0–1 after at least 28 days of treatment on a reduced dose of NEXAVAR, the dose of NEXAVAR may be increased one dose level from the reduced dose. Approximately 50% of patients requiring a dose reduction for dermatologic toxicity are expected to meet these criteria for resumption of the higher dose and roughly 50% of patients resuming the previous dose are expected to tolerate the higher dose (that is, maintain the higher dose level without recurrent Grade 2 or higher dermatologic toxicity).

HOW SUPPLIED

Dosage Forms And Strengths

Tablets containing sorafenib tosylate (274 mg) equivalent to 200 mg of sorafenib.

NEXAVAR tablets are round, biconvex, red film-coated tablets, debossed with the “Bayer cross” on one side and “200” on the other side.

Storage And Handling

NEXAVAR tablets are supplied as round, biconvex, red film-coated tablets, debossed with the “Bayer cross” on one side and “200” on the other side, each containing sorafenib tosylate equivalent to 200 mg of sorafenib.

Bottles of 120 tablets - NDC 50419-488-58

Storage

Store at 25° C (77° F); excursions permitted to 15–30° C (59–86° F) (see USP controlled room temperature). Store in a dry place.

Manufactured for: Bayer HealthCare Pharmaceuticals Inc. Whippany, NJ 07981. Revised: Apr 2020

Side Effects

SIDE EFFECTS

The following serious adverse reactions are discussed elsewhere in the labeling:

Cardiac ischemia, infarction [see WARNINGS AND PRECAUTIONS]
Hemorrhage [see WARNINGS AND PRECAUTIONS]
Hypertension [see WARNINGS AND PRECAUTIONS]
Hand-foot skin reaction, rash, Stevens-Johnson syndrome, and toxic epidermal necrolysis [see WARNINGS AND PRECAUTIONS]
Gastrointestinal perforation [see WARNINGS AND PRECAUTIONS]
QT Interval Prolongation [see WARNINGS AND PRECAUTIONS and CLINICAL PHARMACOLOGY]
Drug-Induced Hepatitis [see WARNINGS AND PRECAUTIONS]
Impairment of TSH suppression in DTC [see WARNINGS AND PRECAUTIONS]

Clinical Trials Experience

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.

The data described reflect exposure to NEXAVAR in 955 patients who participated in placebo controlled studies in hepatocellular carcinoma (N=297), advanced renal cell carcinoma (N=451), or differentiated thyroid carcinoma (N = 207).

The most common adverse reactions (≥20%), which were considered to be related to NEXAVAR, in patients with HCC, RCC or DTC are diarrhea, fatigue, infection, alopecia, hand-foot skin reaction, rash, weight loss, decreased appetite, nausea, gastrointestinal and abdominal pains, hypertension, and hemorrhage.

Adverse Reactions In SHARP (HCC)

Table 4 shows the percentage of patients in the SHARP (HCC) study experiencing adverse reactions that were reported in at least 10% of patients and at a higher rate in the NEXAVAR arm than the placebo arm. CTCAE Grade 3 adverse reactions were reported in 39% of patients receiving NEXAVAR compared to 24% of patients receiving placebo. CTCAE Grade 4 adverse reactions were reported in 6% of patients receiving NEXAVAR compared to 8% of patients receiving placebo.

Table 4: Adverse Reactions Reported in at Least 10% of Patients and at a Higher Rate in NEXAVAR Arm than the Placebo Arm – SHARP (HCC)

	NEXAVAR N=297			Placebo N=302
Adverse Reaction NCI-CTCAE v3 Category/Term	All Grades %	Grade 3 %	Grade 4 %	All Grades %	Grade 3 %	Grade 4 %
Any Adverse Reaction	98	39	6	96	24	8
Constitutional symptoms
Fatigue	46	9	1	45	12	2
Weight loss	30	2	0	10	1	0
Dermatology/skin
Rash/desquamation	19	1	0	14	0	0
Pruritus	14	<1	0	11	<1	0
Hand-foot skin reaction	21	8	0	3	<1	0
Dry skin	10	0	0	6	0	0
Alopecia	14	0	0	2	0	0
Gastrointestinal
Diarrhea	55	10	<1	25	2	0
Anorexia	29	3	0	18	3	<1
Nausea	24	1	0	20	3	0
Vomiting	15	2	0	11	2	0
Constipation	14	0	0	10	0	0
Hepatobiliary/pancreas
Liver dysfunction	11	2	1	8	2	1
Pain
Pain, abdomen	31	9	0	26	5	1

Hypertension was reported in 9% of patients treated with NEXAVAR and 4% of those treated with placebo. CTCAE Grade 3 hypertension was reported in 4% of NEXAVAR-treated patients and 1% of placebo-treated patients. No patients were reported with CTCAE Grade 4 reactions in either treatment group.

Hemorrhage/bleeding was reported in 18% of those receiving NEXAVAR and 20% of placebo-treated patients. The rates of CTCAE Grade 3 and 4 bleeding were also higher in the placebo-treated group (CTCAE Grade 3 – 3% NEXAVAR and 5% placebo and CTCAE Grade 4 – 2% NEXAVAR and 4% placebo). Bleeding from esophageal varices was reported in 2.4% in NEXAVAR-treated patients and 4% of placebo-treated patients.

Renal failure was reported in <1% of patients treated with NEXAVAR and 3% of placebo-treated patients.

The rate of adverse reactions (including those associated with progressive disease) resulting in permanent discontinuation was similar in both the NEXAVAR and placebo-treated groups (32% of NEXAVAR-treated patients and 35% of placebo-treated patients).

Laboratory Abnormalities

The following laboratory abnormalities were observed in patients with HCC:

Hypophosphatemia was a common laboratory finding observed in 35% of NEXAVAR-treated patients compared to 11% of placebo-treated patients; CTCAE Grade 3 hypophosphatemia (1–2 mg/dL) occurred in 11% of NEXAVAR-treated patients and 2% of patients in the placebo-treated group; there was 1 case of CTCAE Grade 4 hypophosphatemia (<1 mg/dL) reported in the placebo-treated group. The etiology of hypophosphatemia associated with NEXAVAR is not known.

Elevated lipase was observed in 40% of patients treated with NEXAVAR compared to 37% of patients in the placebo-treated group. CTCAE Grade 3 or 4 lipase elevations occurred in 9% of patients in each group. Elevated amylase was observed in 34% of patients treated with NEXAVAR compared to 29% of patients in the placebo-treated group. CTCAE Grade 3 or 4 amylase elevations were reported in 2% of patients in each group. Many of the lipase and amylase elevations were transient, and in the majority of cases NEXAVAR treatment was not interrupted. Clinical pancreatitis was reported in 1 of 297 NEXAVAR-treated patients (CTCAE Grade 2).

Elevations in liver function tests were comparable between the 2 arms of the study. Hypoalbuminemia was observed in 59% of NEXAVAR-treated patients and 47% of placebo-treated patients; no CTCAE Grade 3 or 4 hypoalbuminemia was observed in either group.

INR elevations were observed in 42% of NEXAVAR-treated patients and 34% of placebo-treated patients; CTCAE Grade 3 INR elevations were reported in 4% of NEXAVAR-treated patients and 2% of placebo-treated patients; there was no CTCAE Grade 4 INR elevation in either group.

Lymphopenia was observed in 47% of NEXAVAR-treated patients and 42% of placebo-treated patients.

Thrombocytopenia was observed in 46% of NEXAVAR-treated patients and 41% of placebo-treated patients; CTCAE Grade 3 or 4 thrombocytopenia was reported in 4% of NEXAVAR-treated patients and less than 1% of placebo-treated patients.

Hypocalcemia was reported in 27% of NEXAVAR-treated patients and 15% of placebo-treated patients. CTCAE Grade 3 hypocalcemia (6–7 mg /dL) occurred in 2% of NEXAVAR-treated patients and 1% of placebo-treated patients. CTCAE Grade 4 hypocalcemia (<6 mg/dL) occurred in 0.4% of NEXAVAR-treated patients and in no placebo-treated patients.

Hypokalemia was reported in 9.5% of NEXAVAR-treated patients compared to 5.9% of placebo-treated patients. Most reports of hypokalemia were low grade (CTCAE Grade 1). CTCAE Grade 3 hypokalemia occurred in 0.4% of NEXAVAR-treated patients and 0.7% of placebo-treated patients. There were no reports of Grade 4 hypokalemia.

Adverse Reactions In TARGET (RCC)

Table 5 shows the percentage of patients in the TARGET (RCC) study experiencing adverse reactions that were reported in at least 10% of patients and at a higher rate in the NEXAVAR arm than the placebo arm. CTCAE Grade 3 adverse reactions were reported in 31% of patients receiving NEXAVAR compared to 22% of patients receiving placebo. CTCAE Grade 4 adverse reactions were reported in 7% of patients receiving NEXAVAR compared to 6% of patients receiving placebo.

Table 5: Adverse Reactions Reported in at Least 10% of Patients and at a Higher Rate in NEXAVAR Arm than the Placebo Arm – TARGET (RCC)

	NEXAVAR N=451			Placebo N=451
Adverse Reactions NCI-CTCAE v3 Category/Term	All Grades %	Grade 3 %	Grade 4 %	All Grades %	Grade 3 %	Grade 4 %
Any Adverse Reactions	95	31	7	86	22	6
Cardiovascular, General
Hypertension	17	3	<1	2	<1	0
Constitutional symptoms
Fatigue	37	5	<1	28	3	<1
Weight loss	10	<1	0	6	0	0
Dermatology/skin
Rash/desquamation	40	<1	0	16	<1	0
Hand-foot skin reaction	30	6	0	7	0	0
Alopecia	27	<1	0	3	0	0
Pruritus	19	<1	0	6	0	0
Dry skin	11	0	0	4	0	0
Gastrointestinal symptoms
Diarrhea	43	2	0	13	<1	0
Nausea	23	<1	0	19	<1	0
Anorexia	16	<1	0	13	1	0
Vomiting	16	<1	0	12	1	0
Constipation	15	<1	0	11	<1	0
Hemorrhage/bleeding
Hemorrhage â€“ all sites	15	2	0	8	1	<1
Neurology
Neuropathy-sensory	13	<1	0	6	<1	0
Pain
Pain, abdomen	11	2	0	9	2	0
Pain, joint	10	2	0	6	<1	0
Pain, headache	10	<1	0	6	<1	0
Pulmonary
Dyspnea	14	3	<1	12	2	<1

The rate of adverse reactions (including those associated with progressive disease) resulting in permanent discontinuation was similar in both the NEXAVAR and placebo-treated groups (10% of NEXAVAR-treated patients and 8% of placebo-treated patients).

Laboratory Abnormalities

The following laboratory abnormalities were observed in patients with RCC in Study 1:

Hypophosphatemia was a common laboratory finding observed in 45% of NEXAVAR-treated patients compared to 11% of placebo-treated patients. CTCAE Grade 3 hypophosphatemia (1–2 mg/dL) occurred in 13% of NEXAVAR-treated patients and 3% of patients in the placebo-treated group. There were no cases of CTCAE Grade 4 hypophosphatemia (<1 mg/dL) reported in either NEXAVAR or placebo-treated patients. The etiology of hypophosphatemia associated with NEXAVAR is not known.

Elevated lipase was observed in 41% of patients treated with NEXAVAR compared to 30% of patients in the placebo-treated group. CTCAE Grade 3 or 4 lipase elevations occurred in 12% of patients in the NEXAVAR-treated group compared to 7% of patients in the placebo-treated group. Elevated amylase was observed in 30% of patients treated with NEXAVAR compared to 23% of patients in the placebo-treated group. CTCAE Grade 3 or 4 amylase elevations were reported in 1% of patients in the NEXAVAR-treated group compared to 3% of patients in the placebo-treated group. Many of the lipase and amylase elevations were transient, and in the majority of cases NEXAVAR treatment was not interrupted. Clinical pancreatitis was reported in 3 of 451 NEXAVAR- treated patients (one CTCAE Grade 2 and two Grade 4) and 1 of 451 patients (CTCAE Grade 2) in the placebo-treated group.

Lymphopenia was observed in 23% of NEXAVAR-treated patients and 13% of placebo-treated patients. CTCAE Grade 3 or 4 lymphopenia was reported in 13% of NEXAVAR-treated patients and 7% of placebo-treated patients. Neutropenia was observed in 18% of NEXAVAR-treated patients and 10% of placebo-treated patients. CTCAE Grade 3 or 4 neutropenia was reported in 5% of NEXAVAR-treated patients and 2% of placebo-treated patients.

Anemia was observed in 44% of NEXAVAR-treated patients and 49% of placebo-treated patients. CTCAE Grade 3 or 4 anemia was reported in 2% of NEXAVAR-treated patients and 4% of placebo-treated patients.

Thrombocytopenia was observed in 12% of NEXAVAR-treated patients and 5% of placebo-treated patients. CTCAE Grade 3 or 4 thrombocytopenia was reported in 1% of NEXAVAR-treated patients and in no placebo-treated patients.

Hypocalcemia was reported in 12% of NEXAVAR-treated patients and 8% of placebo-treated patients. CTCAE Grade 3 hypocalcemia (6–7 mg/dL) occurred in 1% of NEXAVAR-treated patients and 0.2% of placebo-treated patients, and CTCAE Grade 4 hypocalcemia (<6 mg/dL) occurred in 1% of NEXAVAR-treated patients and 0.5% of placebo-treated patients.

Hypokalemia was reported in 5.4% of NEXAVAR-treated patients compared to 0.7% of placebo-treated patients. Most reports of hypokalemia were low grade (CTCAE Grade 1). CTCAE Grade 3 hypokalemia occurred in 1.1% of NEXAVAR-treated patients and 0.2% of placebo-treated patients. There were no reports of Grade 4 hypokalemia.

Adverse Reactions In DECISION (DTC)

The safety of NEXAVAR was evaluated in DECISION in 416 patients with locally recurrent or metastatic, progressive differentiated thyroid carcinoma (DTC) refractory to radioactive iodine (RAI) treatment randomized to receive 400 mg twice daily NEXAVAR (n=207) or matching placebo (n=209) until disease progression or intolerable toxicity in a double-blind trial [see Clinical Studies]. The data described below reflect a median exposure to NEXAVAR for 46 weeks (range 0.3 to 135). The population exposed to NEXAVAR was 50% male, and had a median age of 63 years.

Dose interruptions for adverse reactions were required in 66% of patients receiving NEXAVAR and 64% of patients had their dose reduced. Drug-related adverse reactions that resulted in treatment discontinuation were reported in 14% of NEXAVAR-treated patients compared to 1.4% of placebo-treated patients.

Table 6 shows the percentage of DTC patients experiencing adverse reactions at a higher rate in NEXAVAR-treated patients than placebo-treated patients in the double-blind phase of the DECISION study. CTCAE Grade 3 adverse reactions occurred in 53% of NEXAVAR-treated patients compared to 23% of placebo-treated patients. CTCAE Grade 4 adverse reactions occurred in 12% of NEXAVAR-treated patients compared to 7% of placebo-treated patients.

Table 6: Per-Patient Incidence of Selected Adverse Reactions Occurring at a Higher Incidence in NEXAVAR-Treated Patients [Between Arm Difference of ≥ 5% (All Grades)1 or ≥ 2% (Grades 3 and 4)]

MedDRA Primary System Organ Class & Preferred Term	NEXAVAR N = 207		Placebo N = 209
MedDRA Primary System Organ Class & Preferred Term	All Grades (%)	Grades 3 and 4 (%)	All Grades (%)	Grades 3 and 4 (%)
Gastrointestinal disorders
Diarrhea	68	6	15	1
Nausea	21	0	12	0
Abdominal pain²	20	1	7	1
Constipation	16	0	8	0.5
Stomatitis³	24	2	3	0
Vomiting	11	0.5	6	0
Oral pain⁴	14	0	3	0
General disorders and administration site conditions
Fatigue	41	5	20	1
Asthenia	12	0	7	0
Pyrexia	11	1	5	0
Investigations
Weight loss	49	6	14	1
Metabolism and nutrition disorders
Decreased appetite	30	2	5	0
Musculoskeletal and connective tissue disorders
Pain in extremity	15	1	7	0
Muscle spasms	10	0	3	0
Neoplasms benign, malignant and unspecified
Squamous cell carcinoma of skin	3	3	0	0
Nervous system disorders
Headache	17	0	6	0
Dysgeusia	6	0	0	0
Respiratory, thoracic and mediastinal disorders
Dysphonia	13	0.5	3	0
Epistaxis	7	0	1	0
Skin and subcutaneous tissue disorders
PPES⁵	69	19	8	0
Alopecia	67	0	8	0
Rash	35	5	7	0
Pruritus	20	0.5	11	0
Dry skin	13	0.5	5	0
Erythema	10	0	0.5	0
Hyperkeratosis	7	0	0	0
Vascular disorders
Hypertension⁶	41	10	12	2
¹ National Cancer Institute Common Terminology Criteria for Adverse Events Version 3.0 ² Includes the following terms: abdominal pain, abdominal discomfort, hepatic pain, esophageal pain, esophageal discomfort, abdominal pain lower, abdominal pain upper, abdominal tenderness, abdominal rigidity ³ Includes the following terms: stomatitis, aphthous stomatitis, mouth ulceration, mucosal inflammation ⁴ Includes the following terms: oral pain, oropharyngeal discomfort, glossitis, burning mouth syndrome, glossodynia ⁵ Palmar-plantar erythrodysesthesia syndrome (Hand-foot skin reaction) ⁶ Includes the following terms: hypertension, blood pressure increased, blood pressure systolic increased

Laboratory Abnormalities

Elevated TSH levels are discussed elsewhere in the labeling [see WARNINGS AND PRECAUTIONS]. The relative increase for the following laboratory abnormalities observed in NEXAVAR-treated DTC patients as compared to placebo-treated patients is similar to that observed in the RCC and HCC studies: lipase, amylase, hypokalemia, hypophosphatemia, neutropenia, lymphopenia, anemia, and thrombocytopenia.

Serum ALT and AST elevations were observed in 59% and 54% of the NEXAVAR-treated patients as compared to 24% and 15% of placebo-treated patients, respectively. High grade (≥ 3) ALT and AST elevations were observed in 4% and 2%, respectively, in the NEXAVAR-treated patients as compared to none of the placebo-treated patients.

Hypocalcemia was more frequent and more severe in patients with DTC, especially those with a history of hypoparathyroidism, compared to patients with RCC or HCC. Hypocalcemia was observed in 36% of DTC patients receiving NEXAVAR (with 10% ≥ Grade 3) as compared with 11% of placebo-treated patients (3% ≥ Grade 3). In the DECISION (DTC) study, serum calcium levels were monitored monthly.

Additional Data From Multiple Clinical Trials

The following additional drug-related adverse reactions and laboratory abnormalities were reported from clinical trials of NEXAVAR (very common 10% or greater, common 1 to less than 10%, uncommon 0.1% to less than 1%, rare less than 0.1 %):

Cardiovascular: Common: congestive heart failure*^†, myocardial ischemia and/or infarction Uncommon: hypertensive crisis* Rare: QT prolongation*

Dermatologic: Very common: erythema Common: exfoliative dermatitis, acne, flushing, folliculitis, hyperkeratosis Uncommon: eczema, erythema multiforme

Digestive: Very common: increased lipase, increased amylase Common: mucositis, stomatitis (including dry mouth and glossodynia), dyspepsia, dysphagia, gastrointestinal reflux Uncommon: pancreatitis, gastritis, gastrointestinal perforations*, cholecystitis, cholangitis

Note that elevations in lipase are very common (41%, see below); a diagnosis of pancreatitis should not be made solely on the basis of abnormal laboratory values

General Disorders: Very common: infection, hemorrhage (including gastrointestinal* and respiratory tract* and uncommon cases of cerebral hemorrhage*), asthenia, pain (including mouth, bone, and tumor pain), pyrexia, decreased appetite Common: influenza-like illness

Hematologic: Very common: leukopenia, lymphopenia Common: anemia, neutropenia, thrombocytopenia Uncommon: INR abnormal

Hepatobiliary disorders: Rare: drug-induced hepatitis (including hepatic failure and death)

Hypersensitivity: Uncommon: hypersensitivity reactions (including skin reactions and urticaria), anaphylactic reaction

Metabolic and Nutritional: Very common: hypophosphatemia Common: transient increases in transaminases, hypocalcemia, hypokalemia, hyponatremia, hypothyroidism Uncommon: dehydration, transient increases in alkaline phosphatase, increased bilirubin (including jaundice), hyperthyroidism

Musculoskeletal: Very common: arthralgia Common: myalgia, muscle spasms

Nervous System and Psychiatric: Common: depression, dysgeusia Uncommon: tinnitus, reversible posterior leukoencephalopathy*

Renal and Genitourinary: Common: renal failure, proteinuria Rare: nephrotic syndrome

Reproductive: Common: erectile dysfunction Uncommon: gynecomastia

Respiratory: Common: rhinorrhea Uncommon: interstitial lung disease-like events (includes reports of pneumonitis, radiation pneumonitis, acute respiratory distress, interstitial pneumonia, pulmonitis and lung inflammation)

In addition, the following medically significant adverse reactions were uncommon during clinical trials of NEXAVAR: transient ischemic attack, arrhythmia, and thromboembolism. For these adverse reactions, the causal relationship to NEXAVAR has not been established.

*adverse reactions may have a life-threatening or fatal outcome.
^†reported in 1.9% of patients treated with NEXAVAR (N= 2276).

Postmarketing Experience

The following adverse drug reactions have been identified during post-approval use of NEXAVAR. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.

Blood and lymphatic disorders: Thrombotic microangiopathy (TMA)

Dermatologic: Stevens-Johnson syndrome and toxic epidermal necrolysis (TEN)

Hypersensitivity: Angioedema

Musculoskeletal: Rhabdomyolysis, osteonecrosis of the jaw

Respiratory: Interstitial lung disease-like events (which may have a life-threatening or fatal outcome)

Drug Interactions

DRUG INTERACTIONS

Effect Of Strong CYP3A4 Inducers On Sorafenib

Rifampin, a strong CYP3A4 inducer, administered at a dose of 600 mg once daily for 5 days with a single oral dose of NEXAVAR 400 mg in healthy volunteers resulted in a 37% decrease in the mean AUC of sorafenib [see CLINICAL PHARMACOLOGY]. Avoid concomitant use of strong CYP3A4 inducers (such as, carbamazepine, dexamethasone, phenobarbital, phenytoin, rifampin, rifabutin, St. John’s wort), when possible, because these drugs can decrease the systemic exposure to sorafenib.

Effect Of Strong CYP3A4 Inhibitors On Sorafenib

Ketoconazole, a strong inhibitor of CYP3A4 and P-glycoprotein, administered at a dose of 400 mg once daily for 7 days did not alter the mean AUC of a single oral dose of NEXAVAR 50 mg in healthy volunteers.

Effect Of Sorafenib On Other Drugs

NEXAVAR 400 mg twice daily for 28 days did not increase the systemic exposure of concomitantly administered midazolam (CYP3A4 substrate), dextromethorphan (CYP2D6 substrate), and omeprazole (CYP2C19 substrate) [see CLINICAL PHARMACOLOGY].

Neomycin

Neomycin administered as an oral dose of 1 g three times daily for 5 days decreased the mean AUC of sorafenib by 54% in healthy volunteers administered a single oral dose of NEXAVAR 400 mg. The effects of other antibiotics on the pharmacokinetics of sorafenib have not been studied [see CLINICAL PHARMACOLOGY].

Drugs That Increase Gastric pH

The aqueous solubility of sorafenib is pH dependent, with higher pH resulting in lower solubility. However, omeprazole, a proton pump inhibitor, administered at a dose of 40 mg once daily for 5 days, did not result in a clinically meaningful change in sorafenib single dose exposure. No dose adjustment for NEXAVAR is necessary.

Warnings & Precautions

WARNINGS

Included as part of the "PRECAUTIONS" Section

PRECAUTIONS

Cardiovascular Events

In the SHARP (HCC) study, the incidence of cardiac ischemia/infarction was 2.7% in NEXAVAR-treated patients compared with 1.3% in the placebo-treated group, in the TARGET (RCC) study, the incidence of cardiac ischemia/infarction was higher in the NEXAVAR-treated group (2.9%) compared with the placebo-treated group (0.4%), and in the DECISION (DTC) study, the incidence of cardiac ischemia/infarction was 1.9% in the NEXAVAR-treated group compared with 0% in the placebo-treated group. Patients with unstable coronary artery disease or recent myocardial infarction were excluded from this study. In multiple clinical trials, congestive heart failure has been reported in 1.9% of Nexavar-treated patients (N=2276) [see ADVERSE REACTIONS].

Temporary or permanent discontinuation of NEXAVAR should be considered in patients who develop cardiovascular events [see DOSAGE AND ADMINISTRATION].

Hemorrhage

An increased risk of bleeding may occur following NEXAVAR administration. In the SHARP (HCC) study, an excess of bleeding regardless of causality was not apparent and the rate of bleeding from esophageal varices was 2.4% in NEXAVAR-treated patients and 4% in placebo-treated patients. Bleeding with a fatal outcome from any site was reported in 2.4% of NEXAVAR-treated patients and 4% in placebo-treated patients. In the TARGET (RCC) study, bleeding regardless of causality was reported in 15.3% of patients in the NEXAVAR-treated group and 8.2% of patients in the placebo-treated group. The incidence of CTCAE Grade 3 and 4 bleeding was 2% and 0%, respectively, in NEXAVAR-treated patients, and 1.3% and 0.2%, respectively, in placebo-treated patients. There was one fatal hemorrhage in each treatment group in the TARGET (RCC) study. In the DECISION (DTC) study, bleeding was reported in 17.4% of NEXAVAR-treated patients and 9.6% of placebo-treated patients; however the incidence of CTCAE Grade 3 bleeding was 1% in NEXAVAR-treated patients and 1.4% in placebo-treated patients. There was no Grade 4 bleeding reported and there was one fatal hemorrhage in a placebo-treated patient.

If any bleeding necessitates medical intervention, permanent discontinuation of NEXAVAR should be considered [see DOSAGE AND ADMINISTRATION]. Due to the potential risk of bleeding, tracheal, bronchial, and esophageal infiltration should be treated with local therapy prior to administering NEXAVAR in patients with DTC.

Hypertension

Monitor blood pressure weekly during the first 6 weeks of NEXAVAR. Thereafter, monitor blood pressure and treat hypertension, if required, in accordance with standard medical practice. In the SHARP (HCC) study, hypertension was reported in 9.4% of NEXAVAR-treated patients and 4.3% of patients in the placebo-treated group. In the TARGET (RCC) study, hypertension was reported in 16.9% of NEXAVAR-treated patients and 1.8% of patients in the placebo-treated group. In the DECISION (DTC) study, hypertension was reported in 40.6% of NEXAVAR-treated patients and 12.4% of placebo-treated patients. Hypertension was usually mild to moderate, occurred early in the course of treatment, and was managed with standard antihypertensive therapy. In cases of severe or persistent hypertension despite institution of antihypertensive therapy, consider temporary or permanent discontinuation of NEXAVAR [see DOSAGE AND ADMINISTRATION]. Permanent discontinuation due to hypertension occurred in 1 of 297 NEXAVAR-treated patients in the SHARP (HCC) study, 1 of 451 NEXAVAR-treated patients in the TARGET (RCC) study, and 1 of 207 NEXAVAR-treated patients in the DECISION (DTC) study.

Dermatologic Toxicities

Hand-foot skin reaction and rash represent the most common adverse reactions attributed to NEXAVAR. Rash and hand-foot skin reaction are usually CTCAE Grade 1 and 2 and generally appear during the first six weeks of treatment with NEXAVAR. Management of dermatologic toxicities may include topical therapies for symptomatic relief, temporary treatment interruption and/or dose modification of NEXAVAR, or in severe or persistent cases, permanent discontinuation of NEXAVAR [see DOSAGE AND ADMINISTRATION]. Permanent discontinuation of therapy due to hand-foot skin reaction occurred in 4 (1.3%) of 297 NEXAVAR-treated patients with HCC, 3 (0.7%) of 451 NEXAVAR-treated patients with RCC, and 11 (5.3%) of 207 NEXAVAR-treated patients with DTC.

There have been reports of severe dermatologic toxicities, including Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN). These cases may be life-threatening. Discontinue NEXAVAR if SJS or TEN are suspected.

Gastrointestinal Perforation

Gastrointestinal perforation is an uncommon adverse reaction and has been reported in less than 1% of patients taking NEXAVAR. In some cases this was not associated with apparent intra-abdominal tumor. In the event of a gastrointestinal perforation, permanently discontinue NEXAVAR.

Warfarin

Infrequent bleeding or elevations in the International Normalized Ratio (INR) have been reported in some patients taking warfarin while on NEXAVAR. Monitor patients taking concomitant warfarin regularly for changes in prothrombin time (PT), INR or clinical bleeding episodes.

Wound Healing Complications

No formal studies of the effect of NEXAVAR on wound healing have been conducted. Temporary interruption of NEXAVAR is recommended in patients undergoing major surgical procedures. There is limited clinical experience regarding the timing of reinitiation of NEXAVAR following major surgical intervention. Therefore, the decision to resume NEXAVAR following a major surgical intervention should be based on clinical judgment of adequate wound healing.

Increased Mortality Observed With NEXAVAR Administered In Combination With Carboplatin/Paclitaxel And Gemcitabine/Cisplatin In Squamous Cell Lung Cancer

In a subset analysis of two randomized controlled trials in chemo-naive patients with Stage IIIB-IV non-small cell lung cancer, patients with squamous cell carcinoma experienced higher mortality with the addition of NEXAVAR compared to those treated with carboplatin/paclitaxel alone (HR 1.81, 95% CI 1.19–2.74) and gemcitabine/cisplatin alone (HR 1.22, 95% CI 0.82-1.80). The use of NEXAVAR in combination with carboplatin/paclitaxel is contraindicated in patients with squamous cell lung cancer. NEXAVAR in combination with gemcitabine/cisplatin is not recommended in patients with squamous cell lung cancer. The safety and effectiveness of NEXAVAR has not been established in patients with non-small cell lung cancer.

QT Interval Prolongation

NEXAVAR can prolong the QT/QTc interval. QT/QTc interval prolongation increases the risk for ventricular arrhythmias. Avoid NEXAVAR in patients with congenital long QT syndrome. Monitor electrolytes and electrocardiograms in patients with congestive heart failure, bradyarrhythmias, drugs known to prolong the QT interval, including Class Ia and III antiarrhythmics. Correct electrolyte abnormalities (magnesium, potassium, calcium). Interrupt NEXAVAR if QTc interval is greater than 500 milliseconds or for an increase from baseline of 60 milliseconds or greater [see CLINICAL PHARMACOLOGY].

Drug-Induced Liver Injury

Sorafenib-induced hepatitis is characterized by a hepatocellular pattern of liver damage with significant increases of transaminases which may result in hepatic failure and death. Increases in bilirubin and INR may also occur. The incidence of severe drug-induced liver injury, defined as elevated transaminase levels above 20 times the upper limit of normal or transaminase elevations with significant clinical sequelae (for example, elevated INR, ascites, fatal, or transplantation), was two of 3,357 patients (0.06%) in a global monotherapy database. Monitor liver function tests regularly. In case of significantly increased transaminases without alternative explanation, such as viral hepatitis or progressing underlying malignancy, discontinue NEXAVAR [see DOSAGE AND ADMINISTRATION].

Embryo-Fetal Toxicity

Based on its mechanism of action and findings in animals, NEXAVAR may cause fetal harm when administered to a pregnant woman [see CLINICAL PHARMACOLOGY]. Sorafenib caused embryo-fetal toxicities in animals at maternal exposures that were significantly lower than the human exposures at the recommended dose of 400 mg twice daily. Advise pregnant women and females of reproductive potential of the potential risk to a fetus. Verify the pregnancy status of females of reproductive potential prior to initiation of NEXAVAR. Advise females of reproductive potential to use effective contraception during treatment and for 6 months following the last dose of NEXAVAR. Advise male patients with female partners of reproductive potential and pregnant partners to use effective contraception during treatment and for 3 months following the last dose of NEXAVAR [see Use In Specific Populations].

Impairment Of Thyroid Stimulating Hormone Suppression In Differentiated Thyroid Carcinoma

NEXAVAR impairs exogenous thyroid suppression. In the DECISION (DTC) study, 99% of patients had a baseline thyroid stimulating hormone (TSH) level less than 0.5 mU/L. Elevation of TSH level above 0.5 mU/L was observed in 41% of NEXAVAR-treated patients as compared with 16% of placebo-treated patients. For patients with impaired TSH suppression while receiving NEXAVAR, the median maximal TSH was 1.6 mU/L and 25% had TSH levels greater than 4.4 mU/L.

Monitor TSH levels monthly and adjust thyroid replacement medication as needed in patients with DTC.

Patient Counseling Information

See FDA-approved PATIENT INFORMATION

Cardiovascular Events

Discuss with patients that cardiac ischemia and/or infarction and congestive heart failure, have been reported during NEXAVAR treatment, and that they should immediately report any episodes of chest pain or other symptoms of cardiac ischemia or congestive heart failure [see WARNINGS AND PRECAUTIONS].

Bleeding

Inform patients that NEXAVAR can increase the risk of bleeding and that they should promptly report any episodes of bleeding [see WARNINGS AND PRECAUTIONS].

Inform patients that bleeding or elevations in the International Normalized Ratio (INR) have been reported in some patients taking warfarin while on NEXAVAR and that their INR should be monitored regularly [see WARNINGS AND PRECAUTIONS].

Hypertension

Inform patients that hypertension can develop during NEXAVAR treatment, especially during the first six weeks of therapy, and that blood pressure should be monitored regularly during treatment [see WARNINGS AND PRECAUTIONS].

Skin Reactions

Advise patients of the possible occurrence of hand-foot skin reaction and rash during NEXAVAR treatment and appropriate countermeasures [see WARNINGS AND PRECAUTIONS].

Gastrointestinal Perforation

Advise patients that cases of gastrointestinal perforation have been reported in patients taking NEXAVAR [see WARNINGS AND PRECAUTIONS].

Wound Healing Complications

Inform patients that temporary interruption of NEXAVAR is recommended in patients undergoing major surgical procedures [see WARNINGS AND PRECAUTIONS].

QT Interval Prolongation

Inform patients with a history of prolonged QT interval that NEXAVAR can worsen the condition [see WARNINGS AND PRECAUTIONS and CLINICAL PHARMACOLOGY].

Drug-Induced Hepatitis

Inform patients that NEXAVAR can cause hepatitis which may result in hepatic failure and death. Advise patients that liver function tests should be monitored regularly during treatment and to report signs and symptoms of hepatitis [see WARNINGS AND PRECAUTIONS].

Embryo-Fetal Toxicity

Advise females to inform their healthcare provider if they are pregnant or become pregnant. Inform female patients of the risk to a fetus and potential loss of pregnancy [see Use In Specific Populations]. Advise females of reproductive potential to use effective contraception during treatment with NEXAVAR and for 6 months after the last dose. Advise male patients with female partners of reproductive potential or who are pregnant to use effective contraception during treatment with NEXAVAR and for 3 months after receiving the last dose of NEXAVAR [see WARNINGS AND PRECAUTIONS, Use In Specific Populations].

Lactation

Advise patients not to breastfeed while taking NEXAVAR and for 2 weeks after receiving the last dose of NEXAVAR [see Use In Specific Populations].

Missed Doses

Instruct patients that if a dose of NEXAVAR is missed, the next dose should be taken at the regularly scheduled time, and not double the dose. Instruct patients to contact their healthcare provider immediately if they take too much NEXAVAR.

Nonclinical Toxicology

Carcinogenesis, Mutagenesis, Impairment Of Fertility

Carcinogenicity studies have not been performed with sorafenib. Sorafenib was clastogenic when tested in an in vitro mammalian cell assay (Chinese hamster ovary) in the presence of metabolic activation. Sorafenib was not mutagenic in the in vitro Ames bacterial cell assay or clastogenic in an in vivo mouse micronucleus assay. One intermediate in the manufacturing process, which is also present in the final drug substance (<0.15%), was positive for mutagenesis in an in vitro bacterial cell assay (Ames test) when tested independently.

No specific studies with sorafenib have been conducted in animals to evaluate the effect on fertility. However, results from the repeat-dose toxicity studies suggest there is a potential for sorafenib to impair reproductive function and fertility. Multiple adverse effects were observed in male and female reproductive organs, with the rat being more susceptible than mice or dogs. Typical changes in rats consisted of testicular atrophy or degeneration, degeneration of epididymis, prostate, and seminal vesicles, central necrosis of the corpora lutea and arrested follicular development. Sorafenib-related effects on the reproductive organs of rats were manifested at daily oral doses ≥ 5 mg/kg (30 mg/m²). This dose results in an exposure (AUC) that is approximately 0.5 times the AUC in patients at the recommended human dose. Dogs showed tubular degeneration in the testes at 30 mg/kg/day (600 mg/m²/day). This dose results in an exposure that is approximately 0.3 times the AUC at the recommended human dose. Oligospermia was observed in dogs at 60 mg/kg/day (1200 mg/m²/day) of sorafenib.

Use In Specific Populations

Pregnancy

Risk Summary

Based on findings from animal studies and its mechanism of action, NEXAVAR may cause fetal harm when administered to a pregnant woman [see CLINICAL PHARMACOLOGY]. There are no available data in pregnant women to inform a drug associated risk. In animal reproduction studies, oral administration of sorafenib to pregnant rats and rabbits during the period of organogenesis resulted in embryo-fetal toxicities at maternal exposures that were significantly lower than human exposures at the recommended dose of 400 mg twice daily [see Data]. Apprise pregnant women and females of reproductive potential of the potential risk to a fetus.

The background risk of major birth defects and miscarriage for the indicated population is unknown. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively.

Data

Animal Data

In animal reproduction studies, sorafenib was teratogenic and induced embryo-fetal toxicity (including increased post-implantation loss, resorptions, skeletal retardations, and retarded fetal weight) when administered orally to pregnant rats and rabbits during the period of organogenesis. The effects occurred at doses considerably below the recommended human dose of 400 mg twice daily (approximately 500 mg/m²/day on a body surface area basis). Adverse intrauterine development effects were seen at doses >0.2 .mg/kg/day (1.2 mg/m²/day) in rats and ≥0.3 mg/kg/day (≥3.6 mg/m²/day) in rabbits. These doses result in exposures (AUC) that are approximately 0.008 times the AUC in patients at the recommended dose.

Lactation

Risk Summary

There are no data on the presence of sorafenib or its metabolites in human milk, or its effects on the breast-fed child or on milk production. Sorafenib was present in milk of lactating rats [see Data]. Because of the potential for serious adverse reactions in a breastfed child from NEXAVAR, advise lactating women not to breastfeed during treatment with NEXAVAR and for 2 weeks after the last dose.

Data

Following administration of radiolabeled sorafenib to lactating Wistar rats, approximately 27% of the radioactivity was secreted into milk. The milk to plasma AUC ratio was approximately 5:1.

Females And Males Of Reproductive Potential

Pregnancy Testing

Verify the pregnancy status of females of reproductive potential prior to the initiation of NEXAVAR.

Contraception

Females

NEXAVAR may cause fetal harm when administered to a pregnant woman [see Pregnancy]. Advise females of reproductive potential to use effective contraception during treatment and for 6 months following the last dose of NEXAVAR.

Males

Based on genotoxicity and findings in animal reproduction studies, advise male patients with female partners of reproductive potential and pregnant partners to use effective contraception during treatment with NEXAVAR and for 3 months after the last dose of NEXAVAR [see Pregnancy, Nonclinical Toxicology].

Infertility

Males

Based on findings in animal studies, NEXAVAR may impair fertility in males of reproductive potential [see Nonclinical Toxicology].

Pediatric Use

The safety and effectiveness of NEXAVAR in pediatric patients have not been studied.

Repeat dosing of sorafenib to young and growing dogs resulted in irregular thickening of the femoral growth plate at daily sorafenib doses ≥600 mg/m² (approximately 0.3 times the AUC at the recommended human dose), hypocellularity of the bone marrow adjoining the growth plate at 200 mg/m²/day (approximately 0.1 times the AUC at the recommended human dose), and alterations of the dentin composition at 600 mg/m²/day. Similar effects were not observed in adult dogs when dosed for 4 weeks or less.

Geriatric Use

In total, 59% of HCC patients treated with NEXAVAR were age 65 years or older and 19% were 75 and older. In total, 32% of RCC patients treated with NEXAVAR were age 65 years or older and 4% were 75 and older. No differences in safety or efficacy were observed between older and younger patients, and other reported clinical experience has not identified differences in responses between the elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out.

Patients With Hepatic Impairment

In a trial of HCC patients with mild (Child-Pugh A) or moderate (Child-Pugh B) hepatic impairment, the systemic exposure (AUC) of sorafenib was within the range observed in patients without hepatic impairment. In another trial in subjects without HCC, the mean AUC was similar for subjects with mild (n=15) and moderate (n=14) hepatic impairment compared to subjects (n=15) with normal hepatic function. No dose adjustment is necessary for patients with mild or moderate hepatic impairment. The pharmacokinetics of sorafenib have not been studied in patients with severe (Child-Pugh C) hepatic impairment [see CLINICAL PHARMACOLOGY].

Patients With Renal Impairment

No correlation between sorafenib exposure and renal function was observed following administration of a single oral dose of NEXAVAR 400 mg to subjects with normal renal function and subjects with mild (CLcr 50–80 mL/min), moderate (CLcr 30–<50 mL/min), or severe (CLcr <30 mL/min) renal impairment who are not on dialysis. No dose adjustment is necessary for patients with mild, moderate or severe renal impairment who are not on dialysis. The pharmacokinetics of sorafenib have not been studied in patients who are on dialysis [see CLINICAL PHARMACOLOGY].

Overdosage & Contraindications

OVERDOSE

There is no specific treatment for NEXAVAR overdose.

The highest dose of NEXAVAR studied clinically is 800 mg twice daily. The adverse reactions observed at this dose were primarily diarrhea and dermatologic. No information is available on symptoms of acute overdose in animals because of the saturation of absorption in oral acute toxicity studies conducted in animals.

In cases of suspected overdose, NEXAVAR should be withheld and supportive care instituted.

CONTRAINDICATIONS

NEXAVAR is contraindicated in patients with known severe hypersensitivity to sorafenib or any other component of NEXAVAR.
NEXAVAR in combination with carboplatin and paclitaxel is contraindicated in patients with squamous cell lung cancer [see WARNINGS AND PRECAUTIONS].

Clinical Pharmacology

CLINICAL PHARMACOLOGY

Mechanism Of Action

Sorafenib is a kinase inhibitor that decreases tumor cell proliferation in vitro.

Sorafenib was shown to inhibit multiple intracellular (c-CRAF, BRAF and mutant BRAF) and cell surface kinases (KIT, FLT-3, RET, RET/PTC, VEGFR-1, VEGFR-2, VEGFR-3, and PDGFR-ß). Several of these kinases are thought to be involved in tumor cell signaling, angiogenesis and apoptosis. Sorafenib inhibited tumor growth of HCC, RCC, and DTC human tumor xenografts in immunocompromised mice. Reductions in tumor angiogenesis were seen in models of HCC and RCC upon sorafenib treatment, and increases in tumor apoptosis were observed in models of HCC, RCC, and DTC.

Pharmacodynamics

Cardiac Electrophysiology

The effect of NEXAVAR 400 mg twice daily on the QTc interval was evaluated in a multi-center, open-label, non-randomized trial in 53 patients with advanced cancer. No large changes in the mean QTc intervals (that is, >20 ms) from baseline were detected in the trial. After one 28-day treatment cycle, the largest mean QTc interval change of 8.5 ms (upper bound of two-sided 90% confidence interval, 13.3 ms) was observed at 6 hours post-dose on day 1 of cycle 2 [see WARNINGS AND PRECAUTIONS].

Pharmacokinetics

The mean elimination half-life of sorafenib was approximately 25 to 48 hours. Multiple doses of NEXAVAR for 7 days resulted in a 2.5-to 7-fold accumulation compared to a single dose. Steady-state plasma sorafenib concentrations were achieved within 7 days, with a peak-to-trough ratio of mean concentrations of less than 2.

The steady-state concentrations of sorafenib following administration of 400 mg NEXAVAR twice daily were evaluated in DTC, RCC and HCC patients. Patients with DTC have mean steady-state concentrations that are 1.8fold higher than patients with HCC and 2.3-fold higher than those with RCC. The reason for increased sorafenib concentrations in DTC patients is unknown.

Absorption And Distribution

After administration of NEXAVAR tablets, the mean relative bioavailability was 38–49% when compared to an oral solution. Following oral administration, sorafenib reached peak plasma levels in approximately 3 hours. With a moderate-fat meal (30% fat; 700 calories), bioavailability was similar to that in the fasted state. With a high-fat meal (50% fat; 900 calories), bioavailability was reduced by 29% compared to that in the fasted state. It is recommended that NEXAVAR be administered without food [see DOSAGE AND ADMINISTRATION].

Mean Cmax and AUC increased less than proportionally beyond oral doses of 400 mg administered twice daily. In vitro binding of sorafenib to human plasma proteins was 99.5%.

Metabolism And Elimination

Sorafenib undergoes oxidative metabolism by hepatic CYP3A4, as well as glucuronidation by UGT1A9. Inducers of CYP3A4 activity can decrease the systemic exposure of sorafenib [see DRUG INTERACTIONS].

Sorafenib accounted for approximately 70–85% of the circulating analytes in plasma at steady-state. Eight metabolites of sorafenib have been identified, of which 5 have been detected in plasma. The main circulating metabolite of sorafenib, the pyridine N-oxide that comprises approximately 9–16% of circulating analytes at steady-state, showed in vitro potency similar to that of sorafenib.

Following oral administration of a 100 mg dose of a solution formulation of sorafenib, 96% of the dose was recovered within 14 days, with 77% of the dose excreted in feces and 19% of the dose excreted in urine as glucuronidated metabolites. Unchanged sorafenib, accounting for 51% of the dose, was found in feces but not in urine.

Effects Of Age, Gender And Race

A study of the pharmacokinetics of sorafenib indicated that the mean AUC of sorafenib in Asians (N=78) was 30% lower than in Caucasians (N=40). Gender and age do not have a clinically meaningful effect on the pharmacokinetics of sorafenib.

Renal Impairment

Mild (CLcr 50-80 mL/min), moderate (CLcr 30 -<50 mL/min), and severe (CLcr <30 mL/min) renal impairment do not affect the pharmacokinetics of sorafenib. No dose adjustment is necessary [see Use In Specific Populations].

Hepatic Impairment

Mild (Child-Pugh A) and moderate (Child-Pugh B) hepatic impairment do not affect the pharmacokinetics of sorafenib. No dose adjustment is necessary [see Use In Specific Populations].

Drug-Drug Interactions

Studies in human liver microsomes demonstrated that sorafenib competitively inhibited CYP2B6, CYP2C8, CYP2C9, CYP2C19, CYP2D6, and CYP3A4. However, NEXAVAR 400 mg twice daily for 28 days with substrates of CYP3A4, CYP2D6 and CYP2C19 did not increase the systemic exposure of these substrates [see DRUG INTERACTIONS].

Studies with cultured human hepatocytes demonstrated that sorafenib did not increase CYP1A2 and CYP3A4 activities, suggesting that sorafenib is unlikely to induce CYP1A2 or CYP3A4 in humans.

Sorafenib inhibits glucuronidation by UGT1A1 and UGT1A9 in vitro. NEXAVAR could increase the systemic exposure of concomitantly administered drugs that are UGT1A1 or UGT1A9 substrates.

Sorafenib inhibited P-glycoprotein in vitro. NEXAVAR could increase the concentrations of concomitantly administered drugs that are P-glycoprotein substrates.

Clinical Studies

Hepatocellular Carcinoma

The SHARP (HCC) study (NCT00105443) was a Phase 3, international, multicenter, randomized, double blind, placebo-controlled trial in patients with unresectable hepatocellular carcinoma. Overall survival was the primary endpoint. A total of 602 patients were randomized; 299 to NEXAVAR 400 mg twice daily and 303 to matching placebo.

Demographics and baseline disease characteristics were similar between the NEXAVAR and placebo-treated groups with regard to age, gender, race, performance status, etiology (including hepatitis B, hepatitis C and alcoholic liver disease), TNM stage (stage I: <1% vs. <1%; stage II: 10.4% vs. 8.3%; stage III: 37.8% vs. 43.6%; stage IV: 50.8% vs. 46.9%), absence of both macroscopic vascular invasion and extrahepatic tumor spread (30.1% vs. 30.0%), and Barcelona Clinic Liver Cancer stage (stage B: 18.1% vs. 16.8%; stage C: 81.6% vs. 83.2%; stage D: <1% vs. 0%). Liver impairment by Child-Pugh score was comparable between the NEXAVAR and placebo-treated groups (Class A: 95% vs. 98%; B: 5% vs. 2%). Only one patient with Child-Pugh class C was entered. Prior treatments included surgical resection procedures (19.1% vs. 20.5%), locoregional therapies (including radiofrequency ablation, percutaneous ethanol injection and transarterial chemoembolization; 38.8% vs. 40.6%), radiotherapy (4.3% vs. 5.0%) and systemic therapy (3.0% vs. 5.0%).

The trial was stopped for efficacy following a pre-specified second interim analysis for survival showing a statistically significant advantage for NEXAVAR over placebo for overall survival (HR: 0.69, p= 0.00058) (see Table 7 and Figure 1). This advantage was consistent across all subsets analyzed.

Final analysis of time to tumor progression (TTP) based on data from an earlier time point (by independent radiologic review) also was significantly longer in the NEXAVAR arm (HR: 0.58, p=0.000007) (see Table 7).

Table 7: Efficacy Results from SHARP (HCC)

Efficacy Parameter	NEXAVAR (N=299)	Placebo (N=303)	Hazard Ratio¹ (95% CI)	P-value (logrank test²)
Overall Survival Median, months (95% CI) No. of events	10.7 (9.4, 13.3) 143	7.9 (6.8, 9.1) 178	0.69 (0.55, 0.87)	0.00058
Time to Progression ³ Median, months (95% CI) No. of events	5.5 (4.1, 6.9) 107	2.8 (2.7, 3.9) 156	0.58 (0.45, 0.74)	0.000007
CI=Confidence interval ¹ Hazard ratio, sorafenib/placebo, stratified Cox model ² Stratified log rank (for the interim analysis of survival, the stopping boundary one-sided alpha = 0.0077) ³ The time-to-progression (TTP) analysis, based on independent radiologic review, was based on data from an earlier time point than the survival analysis

Figure 1: Kaplan-Meier Curve of Overall Survival in SHARP (HCC) (Intent-to-Treat Population)

Kaplan-Meier Curve of Overall Survival in SHARP (HCC) (Intent-to-Treat Population) - Illustration

Renal Cell Carcinoma

The safety and efficacy of NEXAVAR in the treatment of advanced renal cell carcinoma (RCC) were studied in the following two randomized controlled clinical trials.

TARGET (NCT00073307) was a Phase 3, international, multicenter, randomized, double blind, placebo-controlled trial in patients with advanced renal cell carcinoma who had received one prior systemic therapy. Primary study endpoints included overall survival and progression-free survival (PFS). Tumor response rate was a secondary endpoint. The PFS analysis included 769 patients stratified by MSKCC (Memorial Sloan Kettering Cancer Center) prognostic risk category (low or intermediate) and country and randomized to NEXAVAR 400 mg twice daily (N=384) or to placebo (N=385).

Table 8 summarizes the demographic and disease characteristics of the study population analyzed. Baseline demographics and disease characteristics were well balanced for both treatment groups. The median time from initial diagnosis of RCC to randomization was 1.6 and 1.9 years for the NEXAVAR and placebo-treated groups, respectively.

Table 8: Demographic and Disease Characteristics – TARGET (RCC)

Characteristics	NEXAVAR N=384		Placebo N=385
Characteristics	N	(%)	N	(%)
Gender
Male	267	(70)	287	(75)
Female	116	(30)	98	(25)
Race
White	276	(72)	278	(73)
Black/Asian/Hispanic/Other	11	(3)	10	(2)
Not reported ¹	97	(25)	97	(25)
Age group
< 65 years	255	(67)	280	(73)
≥ 65 years	127	(33)	103	(27)
ECOG performance status at baseline
0	184	(48)	180	(47)
1	191	(50)	201	(52)
2	6	(2)	1	(<1)
Not reported	3	(<1)	3	(<1)
MSKCC prognostic risk category
Low	200	(52)	194	(50)
Intermediate	184	(48)	191	(50)
Prior IL-2 and/or interferon
Yes	319	(83)	313	(81)
No	65	(17)	72	(19)
¹ Race was not collected from the 186 patients enrolled in France due to local regulations. In 8 other patients, race was not available at the time of analysis.

Progression-free survival, defined as the time from randomization to progression or death from any cause, whichever occurred earlier, was evaluated by blinded independent radiological review using RECIST criteria.

Figure 2 depicts Kaplan-Meier curves for PFS. The PFS analysis was based on a two-sided Log-Rank test stratified by MSKCC prognostic risk category and country.

Figure 2: Kaplan-Meier Curves for Progression-free Survival – TARGET (RCC)

Kaplan-Meier Curves for Progression-free Survival – TARGET (RCC) - Illustration

NOTE: HR is from Cox regression model with the following covariates: MSKCC prognostic risk category and country. P-value is from two-sided Log-Rank test stratified by MSKCC prognostic risk category and country.

The median PFS for patients randomized to NEXAVAR was 167 days compared to 84 days for patients randomized to placebo. The estimated hazard ratio (risk of progression with NEXAVAR compared to placebo) was 0.44 (95% CI: 0.35, 0.55).

A series of patient subsets were examined in exploratory univariate analyses of PFS. The subsets included age above or below 65 years, ECOG PS 0 or 1, MSKCC prognostic risk category, whether the prior therapy was for progressive metastatic disease or for an earlier disease setting and time from diagnosis of less than or greater than 1.5 years. The effect of NEXAVAR on PFS was consistent across these subsets, including patients with no prior IL-2 or interferon therapy (N=137; 65 patients receiving NEXAVAR and 72 placebo), for whom the median PFS was 172 days on NEXAVAR compared to 85 days on placebo.

Tumor response was determined by independent radiologic review according to RECIST criteria. Overall, of 672 patients who were evaluable for response, 7 (2%) NEXAVAR-treated patients and 0 (0%) placebo-treated patients had a confirmed partial response. Thus the gain in PFS in NEXAVAR-treated patients primarily reflects the stable disease population.

At the time of a planned interim survival analysis, based on 220 deaths, overall survival was longer for NEXAVAR than placebo with a hazard ratio (NEXAVAR over placebo) of 0.72. This analysis did not meet the prespecified criteria for statistical significance. Additional analyses are planned as the survival data mature.

BAY43-9006 (NCT00101413) was a Phase 2 randomized discontinuation trial in patients with metastatic malignancies, including RCC. The primary endpoint was the percentage of randomized patients remaining progression-free at 24 weeks. All patients received NEXAVAR for the first 12 weeks. Radiologic assessment was repeated at week 12. Patients with <25% change in bi-dimensional tumor measurements from baseline were randomized to NEXAVAR or placebo for a further 12 weeks. Patients who were randomized to placebo were permitted to cross over to open-label NEXAVAR upon progression. Patients with tumor shrinkage ≥25% continued NEXAVAR, whereas patients with tumor growth ≥25% discontinued treatment.

A total of 202 patients with advanced RCC were enrolled into BAY43-9006, including patients who had received no prior therapy and patients with tumor histology other than clear cell carcinoma. After the initial 12 weeks of NEXAVAR, 79 patients with RCC continued on open-label NEXAVAR, and 65 patients were randomized to NEXAVAR or placebo. After an additional 12 weeks, at week 24, for the 65 randomized patients, the progression-free rate was significantly higher in patients randomized to NEXAVAR (16/32, 50%) than in patients randomized to placebo (6/33, 18%) (p=0.0077). Progression-free survival was significantly longer in the NEXAVAR-treated group (163 days) than in the placebo-treated group (41 days) (p=0.0001, HR=0.29).

Differentiated Thyroid Carcinoma

The safety and effectiveness of NEXAVAR was established in a multicenter, randomized (1:1), double-blind, placebo-controlled trial (DECISION; NCT00984282) conducted in 417 patients with locally recurrent or metastatic, progressive differentiated thyroid carcinoma (DTC) refractory to radioactive iodine (RAI) treatment. Randomization was stratified by age (< 60 years versus ≥ 60 years) and geographical region (North America, Europe, and Asia).

All patients were required to have actively progressing disease defined as progression within 14 months of enrollment. RAI-refractory disease was defined based on four criteria that were not mutually exclusive. All RAI treatments and diagnostic scans were to be performed under conditions of a low iodine diet and adequate TSH stimulation. Following are the RAI-refractory criteria and the proportion of patients in the study that met each one: a target lesion with no iodine uptake on RAI scan (68%); tumors with iodine uptake and progression after RAI treatment within 16 months of enrollment (12%); tumors with iodine uptake and multiple RAI treatments with the last treatment greater than 16 months prior to enrollment, and disease progression after each of two RAI treatments administered within 16 months of each other (7%); cumulative RAI dose ≥ 600 mCi administered (34%). The major efficacy outcome measure was progression-free survival (PFS) as determined by a blinded, independent radiological review using a modified Response Evaluation Criteria in Solid Tumors v. 1.0 (RECIST). RECIST was modified by inclusion of clinical progression of bone lesions based on the need for external beam radiation (4.4% of progression events). Additional efficacy outcomes measures included overall survival (OS), tumor response rate, and duration of response.

Patients were randomized to receive NEXAVAR 400 mg twice daily (n=207) or placebo (n=210). Of the 417 patients randomized, 48% were male, the median age was 63 years, 61% were 60 years or older, 60% were white, 62% had an ECOG performance status of 0, and 99% had undergone thyroidectomy. The histological diagnoses were papillary carcinoma in 57%, follicular carcinoma (including Hürthle cell) in 25%, and poorly differentiated carcinoma in 10%, and other in 8% of the study population. Metastases were present in 96% of the patients: lungs in 86%, lymph nodes in 51%, and bone in 27%. The median cumulative RAI activity administered prior to study entry was 400 mCi.

A statistically significant prolongation of PFS was demonstrated for NEXAVAR-treated patients compared to those receiving placebo (Figure 3); no statistically significant difference was seen in the final overall survival (OS) analysis (Table 9). Crossover to open label NEXAVAR occurred in161 (77%) placebo-treated patients after investigator-determined disease progression

Table 9: Efficacy Results from DECISION in Differentiated Thyroid Carcinoma

	NEXAVAR N=207	Placebo N=210
Progression-free Survival¹
Number of Deaths or Progression	113 (55%)	136 (65%)
Median PFS in Months (95% CI)	10.8 (9.1, 12.9)	5.8 ( 5.3, 7.8)
Hazard Ratio (95% CI)	0.59 (0.46, 0.76)
P-value ²	<0.001
Overall Survival³
Number of Deaths	103 (49.8%)	109 (51.9%)
Median OS in Months (95% CI)	42.8 (34.6, 52.6)	39.4 (32.7, 51.4)
Hazard Ratio (95% CI)	0.92 (0.71, 1.21)
P-value²	0.570
Objective Response
Number of Objective Responders ⁴	24 (12%)	1 (0.5%)
(95% CI)	(7.6%, 16.8%)	(0.01%, 2.7%)
Median Duration of Response in Months (95% CI)	10.2 (7.4, 16.6)	NE
¹ Independent radiological review ² Two-sided log-rank test stratified by age (< 60 years, ≥ 60 years) and geographic region (North America, Europe, Asia) ³ Conducted after 212 events, which occurred 36 months after the primary PFS analysis. ⁴ All objective responses were partial responses NR = Not Reached, CI = Confidence interval, NE = Not Estimable

Figure 3: Kaplan-Meier Curve of Progression-Free Survival in DECISION (DTC)

Kaplan-Meier Curve of Progression-Free Survival in DECISION (DTC) - Illustration

Medication Guide

PATIENT INFORMATION

NEXAVAR^®
(NEX-A-VAR)
(sorafenib) tablets, oral

What is NEXAVAR?

NEXAVAR is a prescription medicine used to treat:

a type of liver cancer called hepatocellular carcinoma (HCC) that cannot be removed by surgery
a type of kidney cancer called renal cell carcinoma (RCC)
a type of thyroid cancer called differentiated thyroid carcinoma (DTC) that can no longer be treated with radioactive iodine and is progressing

It is not known if NEXAVAR is safe and effective in children.

Do not take NEXAVAR if you:

are allergic to sorafenib or any of the other ingredients in NEXAVAR. See the end of this leaflet for a complete list of ingredients in NEXAVAR.
have squamous cell lung cancer and receive carboplatin and paclitaxel.

Before taking NEXAVAR, tell your healthcare provider about all of your medical conditions including if you:

For females who are able to become pregnant:

For males with female partners who are able to become pregnant:

have heart problems including a condition called “congenital long QT syndrome”
have chest pain
have abnormal magnesium, potassium, or calcium blood levels
have bleeding problems
have high blood pressure
plan to have any surgical procedures or have had recent surgery
are pregnant or plan to become pregnant. NEXAVAR may harm your unborn baby. Tell your healthcare provider right away if you become pregnant during treatment with NEXAVAR.
- Your healthcare should do a pregnancy test before you start treatment with NEXAVAR.
- Use effective birth control (contraception) during your treatment with NEXAVAR and for 6 months after the last dose of NEXAVAR.
- Use effective birth control (contraception) during your treatment with NEXAVAR and for 3 months after the last dose of NEXAVAR.
are breastfeeding or plan to breastfeed. It is not known if NEXAVAR passes into your breast milk. Do not breastfeed during treatment with NEXAVAR and for 2 weeks after receiving the last dose of NEXAVAR.

Tell your healthcare provider about all the medicines you take, including prescription and over-thecounter medicines, vitamins, and herbal supplements.

Especially tell your healthcare provider if you take the medicine warfarin.

How should I take NEXAVAR?

Take NEXAVAR exactly as your healthcare provider tells you to take it.
Take NEXAVAR 2 times a day. Your healthcare provider may change your dose, temporarily stop treatment or completely stop treatment with NEXAVAR if you have side effects.
Take NEXAVAR without food (at least 1 hour before or 2 hours after a meal).
If you miss a dose of NEXAVAR, skip the missed dose, and take your next dose at your regular time. Do not double your dose of NEXAVAR.
If you take too much NEXAVAR call your doctor or go to the nearest hospital emergency room right away.

What are the possible side effects of NEXAVAR?

NEXAVAR may cause serious side effects, including:

decreased blood flow to the heart, heart attack and heart failure. Get emergency help right away if you get symptoms such as chest pain, shortness of breath, racing heartbeat, swelling in lower legs, feet and abdomen, feel lightheaded or faint, tiredness, nausea, vomiting, or sweat a lot.
increased risk of bleeding. Bleeding is a common side effect of NEXAVAR that can be serious and can lead to death. Tell your healthcare provider right away if you have any signs of bleeding during treatment with NEXAVAR:
- vomiting blood or if your vomit looks like coffee-grounds
- pink or brown urine
- red or black (looks like tar) stools
- heavier than normal menstrual cycle
- unusual vaginal bleeding
- frequent nose bleeds
- coughing up blood or blood clots
- bruising
high blood pressure. High blood pressure is a common side effect of NEXAVAR and can be serious. Your blood pressure should be checked every week during the first 6 weeks of starting NEXAVAR. Your blood pressure should be checked regularly and any high blood pressure should be treated during treatment with NEXAVAR.
skin problems. A condition called hand-foot skin reactions and skin rash are common with NEXAVAR treatment and can be severe. NEXAVAR may also cause severe skin and mouth reactions that can be life-threatening. Tell your healthcare provider if you have any of the following symptoms:
- skin rash
- skin redness
- pain or swelling
- blistering and peeling of your skin
- blistering and peeling on the inside of your mouth
- blisters on the palms of your hand or soles of your feet
an opening in the wall of your stomach or intestines (gastrointestinal perforation). Tell your healthcare provider right away if you get fever, nausea, vomiting or severe stomach (abdominal) pain.
possible wound healing problems. If you need to have a surgical procedure, tell your healthcare provider that you are taking NEXAVAR. NEXAVAR may need to be stopped until your wound heals after some types of surgery.
changes in the electrical activity of your heart called QT prolongation. QT prolongation can cause irregular heartbeats that can be life-threatening. Your healthcare provider may do tests during your treatment with NEXAVAR to check the levels of potassium, magnesium, and calcium in your blood, and check the electrical activity of your heart with an electrocardiogram (ECG). Tell your healthcare provider right away if you feel faint, lightheaded, dizzy or feel your heart beating irregularly or fast during your treatment with NEXAVAR.
liver problems (drug-induced hepatitis). NEXAVAR may cause liver problems that may lead to liver failure and death. Your healthcare provider will do blood tests to check your liver function regularly during your treatment with NEXAVAR. Tell your healthcare provider right away if you develop any of the following symptoms:
- yellowing of your skin or the whites of your eyes
- dark “tea-colored” urine
- light-colored bowel movements (stools)
- worsening nausea or vomiting
- pain on the right side of your stomach area
- bleeding or bruising more easily than normal
- loss of appetite
change in thyroid hormone levels. If you have differentiated thyroid cancer, you can have changes in your thyroid hormone levels during treatment with NEXAVAR. Your healthcare provider may need to change your dose of thyroid medicine during treatment with NEXAVAR. Your healthcare provider should check your thyroid hormone levels every month during treatment with NEXAVAR.

The most common side effects of NEXAVAR include:

diarrhea (frequent or loose bowel movements)
tiredness
infection
hair thinning or patchy hair loss
rash
weight loss
loss of appetite
nausea
stomach-area (abdomen) pain
low blood calcium levels in people with differentiated thyroid cancer

NEXAVAR may cause fertility problems in males. This may affect your ability to father a child. Talk to your healthcare provider if this is a concern for you.

These are not all of the possible side effects of NEXAVAR. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

How should I store NEXAVAR?

Store NEXAVAR tablets at room temperature between 68° F to 77° F (20° C to 25° C).
Store NEXAVAR tablets in a dry place.

Keep NEXAVAR and all medicines out of the reach of children.

General information about the safe and effective use of NEXAVAR

Medicines are sometimes prescribed for purposes other than those listed in a Patient Information leaflet. Do not use NEXAVAR for a condition for which it is not prescribed. Do not give NEXAVAR to other people even if they have the same symptoms you have. It may harm them. You can ask your healthcare provider or pharmacist for information about NEXAVAR that is written for health professionals.

What are the ingredients in NEXAVAR?

Active Ingredient: sorafenib tosylate

Inactive Ingredients: croscarmellose sodium, microcrystalline cellulose, hypromellose, sodium lauryl sulphate, magnesium stearate, polyethylene glycol, titanium dioxide and ferric oxide red.

This Patient Information has been approved by the U.S. Food and Drug Administration.

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