Amgen announced the Oncologic Drugs Advisory Committee of the U.S. Food and Drug Administration (FDA) will review data supporting the BLINCYTO (blinatumomab) supplemental Biologics License Application (sBLA) for the treatment of patients with minimal residual disease (MRD)-positive B-cell precursor acute lymphoblastic leukemia (ALL) at a meeting on March 7, 2018.
MRD refers to the presence of a small amount of detectible cancer cells that remain in the patient after treatment.
"After achieving remission, the presence of MRD is the strongest prognostic factor for relapse in acute lymphoblastic leukemia. However, today up to half of patients remain MRD-positive after induction treatments and receive limited clinical benefit from treatments like chemotherapy or stem cell transplantation as a result of failure to identify and treat this residual disease," said David M. Reese, M.D., senior vice president of Translational Sciences and Oncology at Amgen. "Currently there are no approved therapies for patients with MRD-positive ALL, representing a significant unmet need. This sBLA for BLINCYTO is the first application to ever be submitted for an MRD positive indication, and we look forward to discussing the supporting data with members of the Committee."
The Committee will review results from clinical studies in support of this potential new indication, including results from the Phase 2 BLAST study evaluating patients with B-cell precursor ALL and persistent or recurrent MRD after at least three cycles of intensive chemotherapy.
BLINCYTO is the first-and-only approved bispecific CD19-directed CD3 T cell engager (BiTE®) immunotherapy. It is also the first bispecific antibody construct from Amgen's BiTE® platform, which helps the body's immune system target cancer cells and represents an entirely new area of oncology research.
The sBLA for BLINCYTO was accepted by the FDA for priority review, and a Prescription Drug User Fee Act (PDUFA) target action date of March 29, 2018 has been set.
BLINCYTO is a bispecific CD19-directed CD3 T cell engager (BiTE) antibody construct that binds specifically to CD19 expressed on the surface of cells of B-lineage origin and CD3 expressed on the surface of T cells. BLINCYTO was granted breakthrough therapy and priority review designations by the FDA in 2014 for the treatment of relapsed or refractory B-cell precursor ALL in adults and children, and is now approved in the U.S. for this indication.
In November 2015, BLINCYTO was granted conditional marketing authorization in the European Union for the treatment of adults with Philadelphia chromosome-negative (Ph-) relapsed or refractory B-cell precursor ALL. Additional regulatory applications for BLINCYTO are underway and have been submitted to health authorities worldwide.