CAR T-cell therapy is effective for CD19-dim B-lymphoblastic leukemia but is impacted by prior blinatumomab therapy

Author:

Pillai Vinodh1ORCID,Muralidharan Kavitha2,Meng Wenzhao1,Bagashev Asen1,Oldridge Derek A.1ORCID,Rosenthal Jaclyn2ORCID,Van Arnam John1,Melenhorst Jos J.1,Mohan Diwakar3ORCID,DiNofia Amanda M.4,Luo Minjie1ORCID,Cherian Sindhu5,Fromm Jonathan R.5,Wertheim Gerald1,Thomas-Tikhonenko Andrei1ORCID,Paessler Michele1,June Carl H.1,Luning Prak Eline T.1ORCID,Bhoj Vijay G.1ORCID,Grupp Stephan A.4,Maude Shannon L.4,Rheingold Susan R.4

Affiliation:

1. Department of Pathology and Laboratory Medicine and

2. Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA;

3. Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD;

4. Division of Oncology, Cancer Immunotherapy Program, Children's Hospital of Philadelphia, Philadelphia, PA; and

5. Department of Laboratory Medicine, University of Washington, Seattle, WA

Abstract

Key Points Preinfusion dim CD19 expression and rare CD19– events in B-ALL do not affect relapses or responses to CD19-directed CAR T-cells. Prior blinatumomab treatment increases the rate of failure to achieve MRD– remission and CD19– MRD and relapse.

Publisher

American Society of Hematology

Subject

Hematology

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