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Depressive symptoms are often found in patients undergoing stem cell transplantation (HSCT). However, the impact of depression on overall survival and other outcomes after HSCT has not been systematically reviewed.We performed a systematic research, following Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, on different databases (MEDLINE, EMBase, Psychinfo) for cohort studies on adults undergoing HSCT, comparing overall survival or other outcomes (length of aplasia, infectious complications) between patients with depressive symptoms and controls. For studies reporting overall survival hazard ratios (HR), we conducted a meta-analysis by calculating a 95% confidence interval (95%CI) HR, and we assessed heterogeneity with the IA total of 18 studies were included in the systematic review (22 235 participants) and 8 in the meta-analysis. There were a variety of depression screening tools, the Hospital Anxiety and Depression Scale (HADS) being the most reported questionnaire. A significant association between depression and overall survival was found in 9 studies, whereas 8 studies shown no association. Depression tended to have an impact on length of aplasia and infectious complications. In the meta-analysis, depression was found to impact significantly overall survival after HSCT with a HR = 1.07 (95%CI 1.03-1.11). A publication bias was found in the meta-analysis.Depression seems to have a significant impact on post-HSCT survival and on length of aplasia. A systematic screening of depression before HSCT should be considered, with validated tools such as HADS. Future research needs to be done to measure the impact of depression on HSCT response and understand its physiopathology. |
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