Primary end-points were the cumulative incidences of NRM and relapse (defined as disease recurrence according to marrow morphology, flow cytometry, cytogenetics, fluorescence in situ hybridization and polymerase chain reaction). Secondary end-points were: full donor-type engraftment, the cumulative incidences of grades ≥2 aGvHD and cGvHD, the probability of GvHD/relapse-free survival (GRFS) and CRFS. Immune reconstitution was monitored by means of T-cell counts and specific responses to pathogens. The method and evaluation of clones were described elsewhere [18 (link)].