R−/D+ denotes a CMV seronegative recipient from a CMV seropositive donor; R+/D− denotes a CMV seropositive recipient from a CMV seronegative donor. Clinically significant GvHD was defined as grade 2 to 4 acute or chronic extensive. Comparisons of graft source, conditioning, and clinically significant GvHD were performed using Fisher’s exact test. Comparisons of diagnosis and donor were performed using χ-square test for trend.

ALL, acute lymphoblastic leukemia; AML, acute myeloid leukemia; BEAM-C, carmustine, etoposide, cytarabine arabinoside, melphalan, and alemtuzumab; BM, bone marrow; CLL, chronic lymphocytic leukemia; CML, chronic myeloid leukemia; FM-C, fludarabine, melphalan, and alemtuzumab; HL, Hodgkin lymphoma; MDS, myelodysplasia; MMUD, mismatched unrelated donor; MUD, matched unrelated donor; NHL, non-Hodgkin lymphoma; Other, 1 patient with dendritic cell sarcoma and 1 patient with chronic granulomatous disease; PBSC, peripheral blood stem cells; Sib, sibling donor.