FDA/CDC

FDA expands indication for bosutinib in newly diagnosed CML


 

Bosutinib is now approved for the treatment of adults with newly diagnosed chronic phase Philadelphia chromosome–positive (Ph+) chronic myelogenous leukemia (CML).

The Food and Drug Administration granted accelerated approval for bosutinib (Bosulif), which is marketed by Pfizer. The approval is based on data from the randomized, multicenter phase 3 BFORE trial of 487 patients with Ph+ newly diagnosed chronic phase CML who received either bosutinib or imatinib 400 mg once daily. Major molecular response at 12 months was 47.2% (95% confidence interval, 40.9-53.4) in the bosutinib arm and 36.9% (95% CI, 30.8-43.0) in the imatinib arm (two-sided P = .0200).

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Continued approval for this indication may depend on confirmation of clinical benefit in an ongoing follow-up trial, according to Pfizer.

Bosutinib, a kinase inhibitor, was first approved in September 2012 for the treatment of adult patients with chronic, accelerated, or blast phase Ph+ CML with resistance or intolerance to prior therapy.

The recommended dose of bosutinib for newly diagnosed chronic phase Ph+ CML is 400 mg orally once daily with food.

The most common adverse reactions to the drug in newly diagnosed CML patients are diarrhea, nausea, thrombocytopenia, rash, increased alanine aminotransferase, abdominal pain, and increased aspartate aminotransferase.

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