Spectrum Pharmaceuticals, Inc. announced safety findings from the pivotal, registrational Phase 2 BELIEF trial of belinostat, a pan-histone deacetylase (HDAC) inhibitor. As featured in an oral presentation at the T-Cell Lymphoma Forum held in San Francisco, January 24-26, the BELIEF trial safety evaluation showed belinostat had an acceptable safety profile in patients with relapsed/refractory peripheral T-cell lymphoma (R/R PTCL), including patients who have received a previous allogeneic or autologous stem cell transplant. The BELIEF trial is evaluating the efficacy and safety of intravenous belinostat for the treatment of patients with R/R PTCL.

As announced in December 2012, the BELIEF trial surpassed an objective response rate (ORR) of at least 20% in these patients, the study's primary efficacy endpoint as established under a Special Protocol Assessment (SPA) agreement with the U.S. Food and Drug Administration (FDA).