What is the role of blinatumomab (Blincyto) in the treatment of acute lymphoblastic leukemia (ALL)?

Updated: Jul 17, 2018
  • Author: Karen Seiter, MD; Chief Editor: Emmanuel C Besa, MD  more...
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Answer

Blinatumomab (Blincyto), a bispecific T-cell engager (BiTE) antibody, was approved by the FDA in December 2014 for Ph- relapsed or refractory B-cell precursor ALL. BiTE antibodies enable CD3-positive T cells to recognize and eliminate CD19-positive ALL blasts. Approval of blinatumomab was based on results of a phase 2, multicenter, single-arm open-label study in which 77 (41.6%) of 185 adult patients achieved complete remission or complete remission with partial hematologic recovery within 2 cycles of treatment with blinatumomab. [71, 72]

A phase III trial in 405 adults with heavily pretreated B-cell precursor ALL found that treatment with blinatumomab (n = 271) resulted in significantly longer overall survival than treatment with chemotherapy (n = 134). Event-free survival estimates at 6 months were 31% with blinatumomab versus 12% with chemotherapy, and median duration of remission was 7.3 vs. 4.6 months, respectively. A total of 24% of the patients in each treatment group underwent allogeneic HSCT. [73]


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