GSK and Genmab announce positive interim result for phase III study of ofatumumab as maintenance therapy for relapsed CLL

July 31st, 2014 GlaxoSmithKline plc (LSE/NYSE: GSK) and Genmab A/S (OMX: GEN) announced today that an Independent Data Monitoring Committee (IDMC) interim analysis of a phase III study, PROLONG (OMB 112517), reached the predefined significance level for efficacy (p≤0.001). The interim analysis demonstrated that treatment with ofatumumab (Arzerra™) met the primary endpoint of improving progression free survival (PFS). The study …