Wyeth’s Besponsa Approved for Leukemia

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FDA has approved Wyeth Pharmaceuticals’ Besponsa (inotuzumab ozogamicin) for treating adults with relapsed or refractory B-cell precursor acute lymphoblastic leukemia (ALL). The approval was based on data from INO-VATE ALL (NCT01564784), a randomized (1:1), open label, international, multicenter study in 326 patients with Philadelphia chromosome-negative or Philadelphia chromosome-positive relapsed or refractory B-cell precursor ALL. Patients were required to have certain bone marrow blasts and to have received one or two previous induction chemotherapy regimens for ALL, an agency release says.


“Of the initial 218 randomized patients, 35.8% of those who received inotuzumab ozogamicin experienced complete remission (CR) for a median 8.0 months and 89.7% of those patients achieved minimal residual disease (MRD)-negativity,” the agency says. “Of the patients who received chemotherapy, 17.4% experienced CR for a median 4.9 months and 31.6% of those patients achieved minimal residual disease MRD-negativity.”

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