August 17, 2017
The U.S. Food and Drug Administration approved inotuzumab ozogamicin (BESPONSA, Wyeth Pharmaceuticals Inc., a subsidiary of Pfizer Inc.) for the treatment of 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 ≥5% bone marrow blasts and to have received one or two previous induction chemotherapy regimens for ALL. Patients with Philadelphia chromosome positive B cell precursor ALL were required to have disease that failed treatment with at least one tyrosine kinase inhibitor and standard chemotherapy.