American Association for Cancer Research
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Figure S2 from CD19/CD20 Bispecific Chimeric Antigen Receptor (CAR) in Naive/Memory T Cells for the Treatment of Relapsed or Refractory Non-Hodgkin Lymphoma

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journal contribution
posted on 2023-04-04, 00:43 authored by Sarah M. Larson, Christopher M. Walthers, Brenda Ji, Sanaz N. Ghafouri, Jacob Naparstek, Jacqueline Trent, Jia Ming Chen, Mobina Roshandell, Caitlin Harris, Mobina Khericha, Thomas Schweppe, Beata Berent-Maoz, Stanley B. Gosliner, Amr Almaktari, Melanie Ayala Ceja, Martin S. Allen-Auerbach, Jonathan Said, Karla Nawaly, Monica Mead, Sven de Vos, Patricia A. Young, Caspian Oliai, Gary J. Schiller, John M. Timmerman, Antoni Ribas, Yvonne Y. Chen

CD14/CD20 depletion did not significantly alter regulatory T (Treg) cell content in CART19/20 cell product and in patient peripheral blood post infusion. Intracellular staining of starting (unactivated) TN/MEM population, CART19/20 final product, and patient PBMC collected 14 days post CART19/20 infusion. FOXP3+ frequency is shown as a percentage of CD3+CD4+ T cells.


Parker Institute for Cancer Immunotherapy (Parker Institute)

Jean and Stephan Kaplan

Aramont Clinical/Translational Research Program in Hematologic Malignancies

Hornsey Foundation

Office of Extramural Research, National Institutes of Health (OER)

Jaime Erin Follicular Lymphoma Research Consortium



To address antigen escape and loss of T-cell functionality, we report a phase I clinical trial (NCT04007029) evaluating autologous naive and memory T (TN/MEM) cells engineered to express a bispecific anti-CD19/CD20 chimeric antigen receptor (CAR; CART19/20) for patients with relapsed/refractory non-Hodgkin lymphoma (NHL), with safety as the primary endpoint. Ten patients were treated with 36 × 106 to 165 × 106 CART19/20 cells. No patient experienced neurotoxicity of any grade or over grade 1 cytokine release syndrome. One case of dose-limiting toxicity (persistent cytopenia) was observed. Nine of 10 patients achieved objective response [90% overall response rate (ORR)], with seven achieving complete remission [70% complete responses (CR) rate]. One patient relapsed after 18 months in CR but returned to CR after receiving a second dose of CART19/20 cells. Median progression-free survival was 18 months and median overall survival was not reached with a 17-month median follow-up. In conclusion, CART19/20 TN/MEM cells are safe and effective in patients with relapsed/refractory NHL, with durable responses achieved at low dosage levels. Autologous CD19/CD20 bispecific CAR-T cell therapy generated from TN/MEM cells for patients with NHL is safe (no neurotoxicity, maximum grade 1 cytokine release syndrome) and demonstrates strong efficacy (90% ORR, 70% CR rate) in a first-in-human, phase I dose-escalation trial.This article is highlighted in the In This Issue feature, p. 517

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