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DOSAGE AND ADMINISTRATION
The recommended dose and schedule of BOSULIF is 500 mg orally once daily with food. Continue treatment with BOSULIF until disease progression or patient intolerance.
If a dose is missed beyond 12 hours, the patient should skip the dose and take the usual prescribed dose on the following day.
Consider dose escalation to 600 mg once daily with food in patients who do not reach complete hematological response (CHR) by week 8 or a complete cytogenetic response (CCyR) by week 12, who did not have Grade 3 or higher adverse reactions, and who are currently taking 500 mg daily.
Dose Adjustments for Non-Hematologic Adverse Reactions
Elevated liver transaminases: If elevations in liver transaminases greater than 5×institutional upper limit of normal (ULN) occur, withhold BOSULIF until recovery to less than or equal to 2.5×ULN and resume at 400 mg once daily thereafter. If recovery takes longer than 4 weeks, discontinue BOSULIF. If transaminase elevations greater than or equal to 3×ULN occur concurrently with bilirubin elevations greater than 2×ULN and alkaline phosphatase less than 2×ULN (Hy's law case definition), discontinue BOSULIF [see WARNINGS AND PRECAUTIONS].
Diarrhea: For NCI CTCAE Grade 3-4 diarrhea (increase of greater than or equal to 7 stools/day over baseline/pretreatment), withhold BOSULIF until recovery to Grade less than or equal to 1. BOSULIF may be resumed at 400 mg once daily [see WARNINGS AND PRECAUTIONS].
For other clinically significant, moderate or severe non-hematological toxicity, withhold BOSULIF until the toxicity has resolved, then consider resuming BOSULIF at 400 mg once daily. If clinically appropriate, consider re-escalating the dose of BOSULIF to 500 mg once daily.
Dose Adjustments for Myelosuppression
Table 1: Dose Adjustments
for Neutropenia and Thrombocytopenia
|ANCa less than 1000x106/L
Platelets less than 50,000x106/L
|Withhold BOSULIF until ANC greater than or equal to1000x106/L and platelets greater than or equal to 50,000x106/L.
Resume treatment with BOSULIF at the same dose if recovery occurs within 2 weeks. If blood counts remain low for greater than 2 weeks, upon recovery, reduce dose by 100 mg and resume treatment.
If cytopenia recurs, reduce dose by an additional 100 mg upon recovery and resume treatment.
Doses less than 300 mg/day have not been evaluated.
|aAbsolute Neutrophil Count|
Concomitant Use With CYP3A Inhibitors
Avoid the concomitant use of strong or moderate CYP3A and/or P-gp inhibitors with BOSULIF as an increase in bosutinib plasma concentration is expected (strong CYP3A inhibitors include ritonavir, indinavir, nelfinavir, saquinavir, ketoconazole, boceprevir, telaprevir, itraconazole, voriconazole, posaconazole, clarithromycin, telithromycin, nefazodone and conivaptan. Moderate CYP3A inhibitors include fluconazole, darunavir, erythromycin, diltiazem, atazanavir, aprepitant, amprenavir, fosamprevir, crizotinib, imatinib, verapamil, grapefruit products and ciprofloxacin) [see DRUG INTERACTIONS].
Concomitant Use With CYP3A Inducers
Avoid the concomitant use of strong or moderate CYP3A inducers with BOSULIF as a large reduction in exposure is expected (strong CYP3A inducers include rifampin, phenytoin, carbamazepine, St. John's Wort, rifabutin and phenobarbital. Moderate CYP3A inducers include bosentan, nafcillin, efavirenz, modafinil and etravirine) [see DRUG INTERACTIONS].
In patients with pre-existing mild, moderate, and severe hepatic impairment, the recommended dose of BOSULIF is 200 mg daily. A daily dose of 200 mg in patients with hepatic impairment is predicted to result in an area under the concentration curve (AUC) similar to the AUC seen in patients with normal hepatic function receiving 500 mg daily. However, there are no clinical data for efficacy at the dose of 200 mg once daily in patients with hepatic impairment and CML [see Use in Special Populations and CLINICAL PHARMACOLOGY].
In patients with pre-existing severe renal impairment (CLcr less than 30 mL/min), the recommended dose of BOSULIF is 300 mg daily. A daily dose of 300 mg in patients with severe renal impairment is predicted to result in an area under the concentration curve (AUC) similar to the AUC seen in patients with normal renal function receiving 500 mg daily. However, there are no clinical data for efficacy at the dose of 300 mg once daily in patients with severe renal impairment and CML [see Use in Special Populations and CLINICAL PHARMACOLOGY].
Dosage Forms And Strengths
100 mg tablets: yellow, oval, biconvex, film-coated tablets debossed with “Pfizer” on one side and “100” on the other.
500 mg tablets: red, oval, biconvex, film-coated tablets debossed with “Pfizer” on one side and “500” on the other.
Storage And Handling
BOSULIF (bosutinib) tablets are supplied for oral administration in two strengths: a 100 mg yellow, oval, biconvex, film-coated tablet debossed with “Pfizer” on one side and “100” on the other; and a 500 mg red, oval, biconvex, film-coated tablet debossed with “Pfizer” on one side and “500” on the other. BOSULIF (bosutinib) tablets are available in the following packaging configurations (Table 8):
Table 8: Tablet Presentations
|Package Configuration||Tablet Strength (mg)||NDC||Tablet Description|
|120 tablets per bottle||100 mg||0069-0135-01||Yellow, oval, biconvex, film-coated tablets, debossed “Pfizer” on one side and “100” on the other.|
|30 tablets per bottle||500 mg||0069-0136-01||Red, oval, biconvex, film-coated tablets, debossed “Pfizer” on one side and “500” on the other.|
Store at 20°C to 25°C (68°F to 77°F); excursions permitted to 15°C to 30°C (59°F to 86°F) [see USP Controlled Room 10 Temperature].
Handling and Disposal
Procedures for proper disposal of anticancer drugs should be considered. Any unused product or waste material should be disposed of in accordance with local requirements, or drug take back programs.
Distributed by: Pfizer Labs, Division of Pfizer Inc, NY, NY 10017. Revised: 2013
Last reviewed on RxList: 10/17/2013
This monograph has been modified to include the generic and brand name in many instances.
Additional Bosulif Information
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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