Researchers at Albert Einstein College of Medicine reported a modular cytokine‑fusion scaffold (HCW9206) that links IL‑7, IL‑15 and IL‑21 and produces CAR‑T cells enriched in long‑lived T memory stem cells. In mouse models, engineered CAR‑T cells generated using the scaffold displayed prolonged persistence and improved disease control compared with standard manufacturing protocols. The Science Advances study demonstrates a manufacturing route to enhance CAR‑T durability—a key limitation in current adoptive cell therapies—and signals a possible path to reduce relapse rates in blood cancers. Results also showed efficacy signals in HIV models, emphasizing broader antiviral potential. Source: Science Advances publication and lead investigators’ commentary.