Overview CMV-specific T Cell Immunity Test Indicated Prophylaxis of Letermovir After All-HSCT Status: RECRUITING Trial end date: 2026-06-01 Target enrollment: Participant gender: Summary To evaluate the efficacy of CMV-specific T cell immunity test in prolonged usage of letermovir for avoiding late-onset csCMVi after all-HSCT.Phase: NA Details Lead Sponsor: Ruijin HospitalTreatments: letermovir