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Correlation between increased immune checkpoint molecule expression and refractoriness to blinatumomab evaluated by
Takahiro Kobayashi1, Kumi Ubukawa2, Masumi Fujishima2
1Department of Hematology, Nephrology and Rheumatology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita City, Akita, 010-8543, Japan. takahiro@med.akita-u.ac.jp.
International Journal of Hematology
|January 2, 2021
Summary
Blinatumomab treatment response in B-cell acute lymphoblastic leukemia may depend on T cell immune checkpoint molecules. High levels of PD-1, Tim-3, and TIGIT in T cells correlate with poor response.
Area of Science:
- Immunology
- Oncology
- Hematology
Background:
- Blinatumomab improves survival in B-cell acute lymphoblastic leukemia (B-ALL) by activating T cells.
- However, about 50% of patients with relapsed or refractory B-ALL do not respond to blinatumomab.
- The relationship between T cell phenotype and blinatumomab response is not well understood.

