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Outcome of allogeneic stem cell transplantation (alloSCT) is hampered by substantial non-relapse mortality (NRM). Given its impact on organ function and immune response, the nutritional status has been suggested as relevant for NRM. We aimed to evaluate the association of NRM with nutritional status prior to alloSCT and in the post-SCT course. In a retrospective single-center study, we analyzed 128 alloSCTs. Besides standard characteristics, nutrition-associated parameters BMI, serum total protein, and serum albumin were recorded before conditioning and at various time points after alloSCT. Association with NRM was evaluated by univariate and multivariate survival analysis. The cohort comprised patients with a median BMI of 26 kg/m 2  (16.7–46.9 kg/m 2 ), median serum total protein of 59 g/l (41–77 g/l), and serum albumin of 36 g/l (22–46 g/l) before SCT. NRM at  d  +100  was 14.8% and at 1 year 26.6%. Prior to SCT, only serum albumin deficiency was associated with increased NRM ( p  = .010) in multivariate analysis. After SCT ( d  +30  and  d  +100 ), all nutrition-associated parameters decreased ( p  &lt; .002), but no association of deteriorating nutritional status with NRM was found. In multivariate analysis, serum albumin ( p  = .03) and severe albumin deficiency ( p  = .02) correlated with NRM at  d  +30  and  d  +100 , while BMI and serum total protein did not. In our study, albumin deficiency, particularly prior to alloSCT, shows a strong correlation with NRM. This finding may add to monitoring, risk evaluation, and counseling of patients and serve as a rational for interventions to improve the nutritional status in patients undergoing SCT.

Correlation of nutrition-associated parameters with non-relapse mortality in allogeneic hematopoietic stem cell transplantation