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FDA Approves Polivy in Combination with Bendamustine plus Rituximab for Patients with Relapsed, Refractory DLBCL

TON - August 2019, Vol 12, No 4 - FDA Updates

On June 10, 2019, the FDA accelerated the approval of polatuzumab vedotin-piiq (Polivy; Genentech), a CD79b-directed antibody-drug conjugate, in combination with bendamustine (Bendeka, Treanda) plus rituximab (Rituxan or a biosimilar; BR) for the treatment of patients with relapsed or refractory diffuse large B-cell lymphoma (DLBCL) after ≥2 previous therapies.

The FDA approval of polatuzumab was based on results from the phase 1b/2 GO29365 clinical trial that included 80 patients with relapsed or refractory DLBCL who had received ≥1 previous treatment regimens. Patients were randomized in a 1:1 ratio to polatuzumab plus BR or BR alone for six 21-day cycles. Efficacy was based on complete response rate and duration of response, defined as the time the disease remained in remission. Results showed a complete response rate of 40% in patients treated with polatuzumab plus BR versus 18% in those treated with BR alone. Of the 25 patients who achieved a partial or complete response with polatuzumab plus BR, 16 (64%) had a duration of response of ≥6 months and 12 (48%) had a duration of response of ≥12 months.

The most common (≥20%) adverse effects associated with polatuzumab plus BR were neutropenia, thrombocytopenia, anemia, peripheral neuropathy, fatigue, diarrhea, pyrexia, de­creased appetite, and pneumonia.

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Last modified: September 9, 2019