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The hematopoietic cell transplantation‐specific comorbidity index (HCT‐CI) is an outcome predictor for partially matched related donor transplantation

To validate the predictive ability of the Hematopoietic Cell Transplantation‐Specific Comorbidity Index (HCT‐CI) on the outcome of hematopoietic stem cell transplantation (HSCT) patients who received transplants from partially matched related donors (PMRD), a total of 526 patients who received PMRD HSCT between January 2006 and December 2009 at the Institute of Hematology, Peking University were enrolled. Patients were grouped according to their HCT‐CI score; 31.0%, 31.4%, and 37.6% of patients had HCT‐CI scores of 0, 1–2, and ≥3, respectively. Patients with HCT‐CI scores of ≥3 had a significantly poorer 2‐year overall survival (OS) than patients with HCT‐CI scores of 0–2 (54.55% vs. 78.05%, P < 0.001). In addition, patients with HCT‐CI scores of ≥3 had a significantly higher 2‐year cumulative incidence of relapse and nonrelapse mortality (NRM) than patients with scores of 0–2 (relapse: 23.23% vs. 11.59%, P < 0.001; NRM: 34.30% vs. 15.93%, P < 0.001). HCT‐CI scores of <3 were associated with better OS, less relapse, and lower NRM in multivariate analysis. Patients who had high comorbidity scores as well as high‐risk disease had the poorest outcomes. Therefore, we found that HCT‐CI is associated with the outcomes of PMRD HSCT and we should closely monitor patients with a high comorbidity burden. Am. J. Hematol. 88:497–502, 2013. © 2013 Wiley Periodicals, Inc.