The aim of this multicenter retrospective analysis was to carry out a survey of overall outcomes after allohematopoietic SCT of AML patients harboring trisomy 8 (þ 8) as the sole chromosomal abnormality or associated with other abnormalities. We have identified 182 de novo AML patients who underwent allo-hematopoietic SCT between 1990 and 2007 exhibiting isolatedor unknown (n ¼ 1) cytogenetic abnormalities reported to the European Group of Blood and Marrow Transplantation (EBMT). With a median follow-up of 48 months, 5-year non-relapse mortality, relapse rate, leukemia-free survival and OS were 25, 30, 45 and 47%, respectively. In a multivariate analysis, leukemia-free survival rate was improved when patients were female and transplanted in CR with an HLA-identical sibling donor. Five-year leukemia-free survival was 41, 88, 57 and 21% in patients bearing isolated þ 8 or þ 8 and other cytogenetic abnormalities of good, intermediate or poor-risk, respectively. Our retrospective data show that allo-hematopoietic SCT is an effective treatment for AML patients harboring þ 8. The accompanying cytogenetic abnormality to þ 8 seems to influence outcomes of these patients.