On January 19, 2016 Genmab reports that the U.S. Food and Drug Administration (FDA) has approved a supplemental Biologics License Application (sBLA) for the use of Arzerra (ofatumumab) for extended treatment of patients who are in complete or partial response after at least two lines of therapy for recurrent or progressive chronic lymphocytic leukemia (CLL) (Press release, Genmab, JAN 19, 2016, View Source [SID:1234508814]). The application was submitted by Novartis under the ofatumumab collaboration between the two companies. Schedule your 30 min Free 1stOncology Demo! This FDA approval is based on data from an interim analysis from a Phase III study, PROLONG (OMB112517) which evaluated ofatumumab maintenance therapy versus no further treatment in patients with a complete or partial response after second or third line treatment for CLL.
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"The approval of Arzerra in the U.S. as extended treatment provides patients with relapsed CLL with a new treatment option that can help delay disease progression," said Jan van de Winkel, Ph.D., Chief Executive Officer of Genmab.
A total of 474 patients were included in the analysis. Patients who received ofatumumab maintenance treatment lived 14.2 months longer without their disease worsening than patients who received no further treatment. Median progression free survival (PFS) as assessed by the investigators was 29.4 months for the ofatumumab treatment arm and 15.2 months for the observation arm (Hazard Ratio 0.50; p<0.0001).1
There were no unexpected safety findings. The most common adverse reactions (≥10%) were infusion reactions, neutropenia, and upper respiratory tract infection. The two most common grade 3-4 adverse events were neutropenia (22% in ofatumumab arm vs 8% in observation arm), and pneumonia (5% in ofatumumab arm vs 3% in observation arm). During the period between the first dose and 60 days after last dose there were two patients (1%) in the ofatumumab group who died due to adverse events and five patients (2%) in the observation group.1