Higher levels of CD8+ T-cell counts were reached on day 180 in the patients transplanted for AML or MDS-RAEB than in the patients transplanted for myeloproliferative neoplasms or lymphatic malignancies, with medians of 1062x106/l (range 90-4557x106/l), 259x106/l (range 15-689x106/l) and 345.5x106/l (range 136l-3898x106/l), respectively (p = 0.01). Here, CD8A is linked to myeloproliferative neoplasm.