Colleen E. Annesley, MD, on Continued Research With T-APCs to Enhance Cell Therapy Persistence

Commentary
Video

The medical Director and interim co-Chief Medical Officer at Seattle Children's Therapeutics discussed possible research to move forward with CD19 T-APCs for patients with B-ALL.

“We're currently examining if it's worth taking T-APCs forward. I think these data are really promising. I think if we get to a point where we can find the right CAR T-cell products going forward, it would have to be a CD19 -targeting CAR product to bring forward CD19 T-APCs. So, we are looking at exploring that in future trials, to see if we could continue to study this and see if, in more patients, we do see that difference and longer-term remissions, longer term persistence of CAR T-cells.”

CD19t T-APCs (manufactured T cells with CD19 tag antigen presenting cells)have shown potential in enhancing cell persistence in patients with higher risk of relapse after treatment with SCRI-CAR19 for relapsed, refractory CD19+ B-cell acute lymphocytic leukemia (B-ALL).

Data from patients in the PLAT-02 (NCT02028455) and PLAT-03 (NCT03186118) trials were presented by Colleen E. Annesley, MD, Medical Director and interim co-Chief Medical Officer, Seattle Children's Therapeutics, and Associate Professor, Department of Pediatrics, University of Washington School of Medicine, in a poster at the 2023 American Society of Hematology (ASH) Annual Meeting & Exposition, held December 9-12, in San Diego, California.

CGTLive spoke with Annesley to learn more about the PLAT-02 and PLAT-03 trials and continued research with T-APCs. She discussed challenges with manufacturing T-APCs, assessing the cell therapy in clinical trials, and improving access to these kinds of therapies.

Click here to read more coverage of the ASH 2023 meeting.

REFERENCE
Annesley C, Seidel K, Wu QV, et al. A phase 2 trial of SCRI-CAR19 demonstrates favorable leukemia-free survival (LFS), with a pilot study of CD19-expressing T-cell antigen presenting cells (CD19t T-APCs) demonstrating safety and tolerability. Presented at: 2023 ASH Annual Meeting & Exposition, December 9-12; San Diego, California. Abstract 3467
Recent Videos
Barry J Byrne, MD, PhD, the chief medical advisor of MDA and a physician-scientist at the University of Florida
Barry J Byrne, MD, PhD, the chief medical advisor of MDA and a physician-scientist at the University of Florida
Sarah Larson, MD, the medical director of the Immune Effector Cell Therapy Program in the Division of Hematology/Oncology at David Geffen School of Medicine at University of California, Los Angeles (UCLA)
David Porter, MD, the director of cell therapy and transplant at Penn Medicine
David Porter, MD, the director of cell therapy and transplant at Penn Medicine
Georg Schett, MD, vice president research and chair of internal medicine at the University of Erlangen – Nuremberg
Manali Kamdar, MD, the associate professor of medicine–hematology and clinical director of lymphoma services at the University of Colorado
Manali Kamdar, MD, the associate professor of medicine–hematology and clinical director of lymphoma services at the University of Colorado
Ben Samelson-Jones, MD, PhD, assistant professor pediatric hematology, Perelman School of Medicine, University of Pennsylvania and Associate Director, Clinical In Vivo Gene Therapy, Children’s Hospital of Philadelphia
Related Content
© 2025 MJH Life Sciences

All rights reserved.