pEFS according to chimerism status including all patients who were in remission at the time of transplantation. Kaplan-Meier estimates of pEFS for patients in remission before transplantation who developed CC or MC and did or did not receive immunotherapy (pEFS, log-rank test, P < .0001). CC patients: n = 44; censored, n = 6, pEFS = 0.85, 95% CI = 0.68-0.93. MC patients with immunotherapy: n = 7; censored, n = 2, pEFS = 0.71, 95% CI = 0.26-0.92. MC patients without immunotherapy: n = 9; censored, n = 9, pEFS = 0.00.