scholarly journals Anti-CD22 CAR T-Cell Therapy Mediates Durable Complete Responses in Adults with Relapsed or Refractory Large B-Cell Lymphoma after Failure of Anti-CD19 CAR T-Cell Therapy and High Response Rates in Adults with Relapsed or Refractory B-Cell Acute Lymphoblastic Leukemia

2021 ◽  
Vol 27 (3) ◽  
pp. S76
Author(s):  
Matthew J. Frank ◽  
John Baird ◽  
Juliana Craig ◽  
Shabnum Patel ◽  
Jay Spiegel ◽  
...  
Keyword(s):  
T Cell ◽  
Cell Therapy ◽  
B Cell ◽  
Lymphoblastic Leukemia ◽  
B Cell Lymphoma ◽  
T Cell Therapy ◽  
Car T Cell ◽  
Car T Cell Therapy ◽  
Car T ◽  
Cell Acute Lymphoblastic Leukemia

Pseudoprogression of extramedullary disease in relapsed acute lymphoblastic leukemia after CAR T-cell therapy

Immunotherapy ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 5-10
Author(s):  
Jie Huang ◽  
Liucheng Rong ◽  
Enxiu Wang ◽  
Yongjun Fang
Keyword(s):  
Acute Lymphoblastic Leukemia ◽  
T Cell ◽  
Cell Therapy ◽  
B Cell ◽  
Lymphoblastic Leukemia ◽  
T Cell Therapy ◽  
Car T Cell ◽  
Car T Cell Therapy ◽  
Car T ◽  
Cell Acute Lymphoblastic Leukemia

Background: CD19-targeted chimeric antigen receptor (CAR) T-cell therapy has emerged as a powerful immunotherapy in relapsed or refractory B-cell acute lymphoblastic leukemia. The changes in extramedullary (EM) disease in pediatric relapsed or refractory B-cell acute lymphoblastic leukemia after CAR T-cell therapy have rarely been reported. Materials & methods: A child with relapsed B-ALL was treated with CAR T-cell therapy. Bone marrow morphological examination, minimal residual disease, fusion mutation and radiological evaluation of the EM disease were performed before and after CAR T-cell infusion. Results: Radiological assessment revealed a distinct asymptomatic pseudo progression of EM involvements on day 16 after CAR T-cell infusion. Conclusion: Pseudoprogression of EM disease indicates heterogeneous immune-related patterns of response in patients treated with CAR-T therapy. Such patients should be closely monitored and practical immune-related response criteria should be developed for them.

scholarly journals Influence of TP53 Mutation on Survival of Diffuse Large B-Cell Lymphoma in the CAR T-Cell Era

Cancers ◽  
2021 ◽  
Vol 13 (22) ◽  
pp. 5592
Author(s):  
Edit Porpaczy ◽  
Philipp Wohlfarth ◽  
Oliver Königsbrügge ◽  
Werner Rabitsch ◽  
Cathrin Skrabs ◽  
...  
Keyword(s):  
T Cell ◽  
Cell Therapy ◽  
B Cell ◽  
Tp53 Mutation ◽  
Cell Lymphoma ◽  
B Cell Lymphoma ◽  
T Cell Therapy ◽  
Car T Cell ◽  
Car T Cell Therapy ◽  
Car T

Refractory/relapsed diffuse large B-cell lymphoma (DLBCL) is associated with poor outcome. The clinical behavior and genetic landscape of DLBCL is heterogeneous and still not fully understood. TP53 mutations in DLBCL have been identified as markers of poor prognosis and are often associated with therapeutic resistance. Chimeric antigen receptor T-cell therapy is an innovative therapeutic concept and represents a game-changing therapeutic option by supporting the patient’s own immune system to kill the tumor cells. We investigated the impact of TP53 mutations on the overall survival of refractory/relapsed DLBCL patients treated with comparable numbers of therapy lines. The minimum number of therapy lines was 2 (median 4), including either anti-CD19 CAR T-cell therapy or conventional salvage therapy. A total of 170 patients with DLBCL and high-grade B-cell lymphoma with MYC, BCL2, and/or BCL6 rearrangements (DHL/THL), diagnosed and treated in our hospital between 2000 and 2021, were included. Twenty-nine of them received CAR T-cell therapy. TP53 mutations were found in 10/29 (35%) and 31/141 (22%) of patients in the CAR T-cell and conventional groups, respectively. Among the 141 patients not treated with CAR T cells, TP53 mutation was an independent prognostic factor for overall survival (OS) (median 12 months with TP53 vs. not reached without TP53 mutation, p < 0.005), but in the CAR T cell treated group, this significance could not be shown (median OS 30 vs. 120 months, p = 0.263). The findings from this monocentric retrospective study indicate that TP53 mutation status does not seem to affect outcomes in DLBCL patients treated with CAR T-cell therapy. Detailed evaluation in large cohorts is warranted.

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