Hai-Ping Dai et al. demonstrated the safety and efficacy of CD7 CAR-T cells using protein expression blockers to block CD7 expression at the CAR-T-cell membrane for the treatment of R/R early T-cell precursor lymphoblastic leukaemia/lymphoma (ETP-ALL/LBL) in patients with TP53 mutations [51]. Here, CD7 is linked to acute lymphoblastic leukemia.