Dataset Information

Real-World Treatment Patterns After CD19-Directed CAR T Cell Therapy Among Patients with Diffuse Large B Cell Lymphoma.

ABSTRACT:

Introduction

CD19-directed chimeric antigen receptor T cells (CAR T) are approved for treatment of adults with relapsed/refractory diffuse large B cell lymphoma (DLBCL) following at least two lines of therapy.

Methods

This study describes real-world treatment patterns after CAR T in adults with DLBCL. It includes adults diagnosed with DLBCL in IBM MarketScan Commercial and Medicare Supplemental healthcare claims databases administered CAR T between 2017 and 2019 (index event) and at least 6 months of continuous health plan enrollment pre-index. Kaplan-Meier methods were used to estimate risk and time to first subsequent treatment after CAR T, as a proxy for CAR T failure.

Results

Among 129 patients meeting study criteria, most (123; 95.4%) were hospitalized during CAR T therapy. Median length of stay was 17 (25th-75th percentile, 13-22) days. Estimated 6-month risk of subsequent treatment was 36.2% (95% confidence interval [CI] 27.1-45.8%). During median follow-up of 195 (25th-75th percentile, 102-362) days, median time to the first line of therapy after CAR T, accounting for censoring, was 378 days (95% CI 226, not reached). Among 48 patients who received another therapy after CAR T, 58.3% received immunotherapy, 50.0% radiation therapy, 25.0% chemotherapy, 25.0% targeted therapy, and 12.5% hematopoietic stem cell transplant.

Conclusions

Among real-world patients with DLBCL treated with CAR T, the risk of not achieving a durable response is considerable; additional, effective options for DLBCL salvage treatment are needed.

SUBMITTER: Jalbert JJ

PROVIDER: S-EPMC9123047 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature

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Publications

Real-World Treatment Patterns After CD19-Directed CAR T Cell Therapy Among Patients with Diffuse Large B Cell Lymphoma.

Jalbert Jessica J JJ Wu Ning N Chen Chieh-I CI Ambati Srikanth S Ge Wenzhen W Arnason Jon E JE

Advances in therapy 20220409 6

<h4>Introduction</h4>CD19-directed chimeric antigen receptor T cells (CAR T) are approved for treatment of adults with relapsed/refractory diffuse large B cell lymphoma (DLBCL) following at least two lines of therapy.<h4>Methods</h4>This study describes real-world treatment patterns after CAR T in adults with DLBCL. It includes adults diagnosed with DLBCL in IBM MarketScan Commercial and Medicare Supplemental healthcare claims databases administered CAR T between 2017 and 2019 (index event) and ...[more]

PMID: 35397110

Similar Datasets

Project description:Chimeric antigen receptor T cell (CAR-T) therapy has emerged as highly effective in relapsed/refractory (R/R) diffuse large B-cell lymphoma (DLBCL), but only about 40% patients have achieved sustained responses. Here, we conducted a phase II clinical trial testing efficacy and toxicities of CAR-T therapy in R/R non-Hodgkin's lymphoma patients (NCT03196830). Among enrolled patients, 33 R/R DLBCL patients pretreated with DFC (decitabine, fludarabine plus cyclophosphamide) lymphodepletion chemotherapy and infused with tandem CD19-CD22 based CAR-T cells were drawn out for efficacy and toxicities of CAR-T therapy evaluation. With a median follow-up of 10.9(0.6-29.0) months, the best overall response and complete remission (CR) rates were 90.9% and 63.6%, respectively. The median progression-free survival (PFS) was 10.2 months and overall survival (OS) was undefined. The 2-year OS and PFS rates were 54.3% and 47.2%, respectively. No severe grade 4 cytokine release syndrome (CRS) was observed and grade 3 CRS was observed in only 7 patients; 3 patients developed mild immune effect or cell-associated neurotoxic syndrome. All toxicities were transient and reversible and no CAR-T-related mortality. Further subgroup analysis showed that achieving CR was an independent prognostic factor associated with favorable PFS and OS. The 2-year OS and PFS for patients who achieved CR within 3 months (undefined versus undefined P=0.021 and undefined versus undefined P=0.036) or during the follow-up period were significantly longer than those who did not (undefined versus 4.6 months P < 0.0001 and undefined versus 2.0months P<0.001). While severe CRS was also an independent prognostic factor but associated with inferior PFS and OS. The 2-year OS and PFS for patients with grade 3 CRS were significantly shorter than those with grade 0-2 CRS (4.1 months versus undefined P<0.0001 and 1.7 months versus undefined P=0.0002). This study indicated that CD19/CD22 dual-targeted CAR-T therapy under a decitabine-containing lymphodepletion regimen may be a safe, potent effective approach to R/R DLBCL patients.

Dataset Information

Real-World Treatment Patterns After CD19-Directed CAR T Cell Therapy Among Patients with Diffuse Large B Cell Lymphoma.

Introduction

Methods

Results

Conclusions

Publications

Real-World Treatment Patterns After CD19-Directed CAR T Cell Therapy Among Patients with Diffuse Large B Cell Lymphoma.

Similar Datasets

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