Experimental cell injection targets Hard-to-Treat brain lining tumors

This early study tested a new treatment called QH104 for people with solid tumors that have spread to the lining of the brain (meningeal metastases). The treatment uses specially engineered immune cells (B7H3 CAR-γδ T cells) injected directly into the fluid around the brain. Only 3 patients took part, and the goal was to see if the treatment is safe and whether it can shrink or control the tumors. Because this is a very small, early-stage study, it is not yet known if this approach will become a standard therapy.