Pfizer and Avillion Announce Positive Top-Line Results for Phase 3 BFORE Study of BOSULIF for First-Line Treatment of Philadelphia Chromosome Positive Chronic Myeloid Leukemia

NEW YORK, N.Y., December 5, 2016 – Today, Pfizer Inc. and its partner Avillion LLP announced results from the Phase 3 BFORE (Bosutinib trial in First line chrOnic myelogenous leukemia tREatment) trial demonstrating superiority of BOSULIF® (bosutinib) over imatinib as a first-line treatment for patients with chronic phase Philadelphia chromosome positive (Ph+) chronic myeloid leukemia (CML). The study met its primary endpoint of major molecular response (MMR) at 12 months. No new or unexpected safety issues were identified. BOSULIF is currently indicated in the U.S. and EU for the treatment of adult patients with Ph+ CML with resistance or intolerance to prior therapy.

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