• A phase 1/2 study of HD-CAR-1, a third-generation CAR T-cell therapy, demonstrates encouraging response rates in heavily pretreated CLL patients.
• Six of nine patients (67%) achieved complete remission (CR) three months post-treatment, with 83% showing undetectable minimal residual disease.
• With a median follow-up of 27 months, the progression-free survival rate was 30%, and achieving CR correlated with significantly longer PFS (P = .024).
• The therapy showed a favorable safety profile, with only one case of grade 3 cytokine release syndrome and no neurotoxicity observed.