Sorafenib Tosylate

SORAFENIB TOSYLATE- sorafenib tosylate tablet, film coated
Mylan Pharmaceuticals Inc.

1 INDICATIONS AND USAGE

1.1 Hepatocellular Carcinoma

Sorafenib tablets are indicated for the treatment of patients with unresectable hepatocellular carcinoma (HCC).

1.2 Renal Cell Carcinoma

Sorafenib tablets are indicated for the treatment of patients with advanced renal cell carcinoma (RCC).

1.3 Differentiated Thyroid Carcinoma

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

2 DOSAGE AND ADMINISTRATION

2.1 Recommended Dosage

The recommended dosage of sorafenib tablets is 400 mg orally twice daily without food (at least 1 hour before or 2 hours after a meal) until the patient is no longer clinically benefiting from therapy or until unacceptable toxicity.

2.2 Dose Modifications for Adverse Reactions

Recommended Dosage Modifications

The recommended dosage modifications for adverse reactions are provided in Tables 1, 2, and 3.

Table 1: Recommended Dose Reductions for Adverse Reactions

Dose Reduction

Hepatocellular Carcinoma and Renal Cell Carcinoma

Differentiated Thyroid Carcinoma

First Dose Reduction

400 mg orally once daily

400 mg orally in the morning and 200 mg orally in the evening about 12 hours apart

OR

200 mg orally in the morning and 400 mg orally in the evening about 12 hours apart

Second Dose Reduction

200 mg orally once daily

OR

400 every other day

200 mg orally twice daily

Third Dose Reduction

None

200 mg orally once daily

Table 2: Recommended Dosage Modifications of Sorafenib Tablets for Adverse Reactions
*
Adverse reactions graded according to National Cancer Institute Common Terminology Criteria for Adverse Events version 3.0 (NCI CTCAE v3.0).
If no recovery after 30 day interruption, discontinue treatment unless the patient is deriving clinical benefit.
If more than 2 dose reductions are required, permanently discontinue treatment.
§
In addition, any grade increased alkaline phosphatase in the absence of known bone pathology and Grade 2 or worse increased bilirubin; any 1 of the following: INR of 1.5 or greater, ascites and/or encephalopathy in the absence of underlying cirrhosis or other organ failure considered to be due to drug-induced liver injury.

Adverse Reaction

Severity *

Sorafenib Tablets Dosage Modification

Cardiovascular Events [see Warnings and Precautions (5.1)]

Cardiac Ischemia and/or Infarction

Grade 2 and above

Permanently discontinue.

Congestive Heart Failure

Grade 3

Interrupt until Grade 1 or less, resume at reduced dose by 1 dose level.

Grade 4

Permanently discontinue.

Hemorrhage [see Warnings and Precautions (5.2)]

Grade 2 and above requiring medical intervention

Permanently discontinue.

Hypertension [see Warnings and Precautions (5.3)]

Grade 2 (symptomatic/persistent)

OR

Grade 2 symptomatic increase by greater than 20 mm Hg (diastolic) or greater than 140/90 mm Hg if previously within normal limits

OR

Grade 3

Interrupt until symptoms resolve and diastolic blood pressure less than 90 mm Hg, then resume at reduced dose by 1 dose level.

If needed, reduce another dose level.

Grade 4

Permanently discontinue.

Gastrointestinal Perforation [see Warnings and Precautions (5.5)]

Any grade

Permanently discontinue.

QT Interval Prolongation [see Warnings and Precautions (5.9)]

Greater than 500 milliseconds

OR

Increase from baseline of 60 milliseconds or greater

Interrupt and correct electrolyte abnormalities (magnesium, potassium, calcium).

Use medical judgement before restarting.

Drug-Induced Liver Injury [see Warnings and Precautions (5.10)]

Grade 3 ALT or higher in the absence of another cause §

OR

AST/ALT greater than 3 x upper limit normal (ULN) with bilirubin greater than 2 x ULN in the absence of another cause §

Permanently discontinue.

Non-hematological toxicities [see Adverse Reactions (6.1)]

Grade 2

Continue treatment at reduced dose by 1 dose level.

Grade 3

1st occurrence

Interrupt until Grade 2 or less, then resume at reduced dose by 1 dose level.

No improvement within 7 days

OR

2nd or 3rd occurrence

Interrupt until Grade 2 or less, then resume at reduced dose by 2 dose levels.

4th occurrence

Interrupt until Grade 2 or less, then resume at reduced dose by 2 dose levels for HCC and RCC or 3 dose levels for DTC.

Grade 4

Permanently discontinue.

Table 3: Recommended Dosage Modifications for Dermatologic Toxicities

Dermatologic Toxicity Grade

Occurrence

Sorafenib Tablets Dosage 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 patient’s normal activities

1st occurrence

Continue sorafenib tablets and consider topical therapy for symptomatic relief.

If no improvement within 7 days, see below.

Decrease sorafenib tablets 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 sorafenib tablets until resolved or improved to Grade 0 to 1.

Interrupt sorafenib tablets until completely resolved or improved to Grade 1.

When resuming treatment, decrease dose by 1 dose level.

When resuming treatment, decrease dose by 1 dose level for 2nd occurrence and 2 dose levels for 3rd occurrence.

4th occurrence

Discontinue sorafenib tablets 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

1st occurrence

Interrupt sorafenib tablets until resolved or improved to Grade 0 to 1.

Interrupt sorafenib tablets until completely resolved or improved to Grade 1.

When resuming treatment, decrease dose by 1 dose level.

When resuming treatment, decrease dose by 1 dose level.

2nd occurrence

Interrupt sorafenib tablets until resolved or improved to Grade 0 to 1.

Interrupt sorafenib tablets until completely resolved or improved to Grade 1.

When resuming treatment, decrease dose by 1 dose level.

When resuming treatment, decrease dose by 2 dose levels.

3rd occurrence

Discontinue sorafenib tablets treatment.

Following improvement of Grade 2 or 3 dermatologic toxicity to Grade 0 or 1 for at least 28 days on a reduced dose of sorafenib tablets, the dose of sorafenib tablets may be increased 1 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).

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