Death after hematopoietic stem cell transplantation: changes over calendar year time, infections and associated factors

Jan Styczyński, Gloria Tridello, Linda Koster, Simona Iacobelli, Anja van Biezen, Steffie van der Werf, Małgorzata Mikulska, Lidia Gil, Catherine Cordonnier, Per Ljungman, Diana Averbuch, Simone Cesaro, Rafael de la Camara, Helen Baldomero, Peter Bader, Grzegorz Basak, Chiara Bonini, Rafael Duarte, Carlo Dufour, Jurgen Kuball, Arjan Lankester, Silvia Montoto, Arnon Nagler, John A Snowden, Nicolaus Kröger, Mohamad Mohty, Alois Gratwohl, Infectious Diseases Working Party EBMT, Jan Styczyński, Gloria Tridello, Linda Koster, Simona Iacobelli, Anja van Biezen, Steffie van der Werf, Małgorzata Mikulska, Lidia Gil, Catherine Cordonnier, Per Ljungman, Diana Averbuch, Simone Cesaro, Rafael de la Camara, Helen Baldomero, Peter Bader, Grzegorz Basak, Chiara Bonini, Rafael Duarte, Carlo Dufour, Jurgen Kuball, Arjan Lankester, Silvia Montoto, Arnon Nagler, John A Snowden, Nicolaus Kröger, Mohamad Mohty, Alois Gratwohl, Infectious Diseases Working Party EBMT

Abstract

Information on incidence, and factors associated with mortality is a prerequisite to improve outcome after hematopoietic stem cell transplantation (HSCT). Therefore, 55'668 deaths in 114'491 patients with HSCT (83.7% allogeneic) for leukemia were investigated in a landmark analysis for causes of death at day 30 (very early), day 100 (early), at 1 year (intermediate) and at 5 years (late). Mortality from all causes decreased from cohort 1 (1980-2001) to cohort 2 (2002-2015) in all post-transplant phases after autologous HSCT. After allogeneic HSCT, mortality from infections, GVHD, and toxicity decreased up to 1 year, increased at 5 years; deaths from relapse increased in all post-transplant phases. Infections of unknown origin were the main cause of infectious deaths. Lethal bacterial and fungal infections decreased from cohort 1 to cohort 2, not unknown or mixed infections. Infectious deaths were associated with patient-, disease-, donor type, stem cell source, center, and country- related factors. Their impact varied over the post-transplant phases. Transplant centres have successfully managed to reduce death after HSCT in the early and intermediate post-transplant phases, and have identified risk factors. Late post-transplant care could be improved by focus on groups at risk and better identification of infections of "unknown origin".

Conflict of interest statement

The authors declare that they have no conflict of interest.

Figures

Fig. 1
Fig. 1
Cumulative incidences of mortality after HSCT over four post-transplant phases and from cohort 1 to cohort 2. The stacked curves for the four post-transplant phases for the two cohorts combined in landmark analysis are presented: a 30-day mortality; b 100-day mortality (for patients alive at day 30); c 1-year mortality (for patients alive at day 100); d 5-year mortality (for patients alive at 1 year)
Fig. 2
Fig. 2
Main causes of death and of infectious deaths after HSCT. Main cause of death (in %)by post-transplant phase and by cohorts 1 and 2 (1 = cohort 1980–2001; 2 = cohort 2002–2015): a all patients; b allo-HSCT patients; c auto-HSCT patients. Cumulative incidences of mortality for the respective cause of death during the 4 post-transplant time periods, day 0 to day 30, day 30 to day 100, day 100 to 1 year, and 1 year to 5 years (see methods section for details), are shown
Fig. 3
Fig. 3
Main causes of death and of infectious deaths after HSCT. Causes of infectious deaths by post-transplant phase. Changes over time of causes of infectious deaths (in %) after HSCT for leukemia by post-transplant phase (1 = cohort 1980–2001; 2 = cohort 2002–2015): a all patients; b allo-HSCT patients; c auto-HSCT patients. Cumulative incidences of mortality for the respective cause of death during the 4 post-transplant time periods, day 0 to day 30, day 30 to day 100, day 100 to 1 year, and 1 year to 5 years (see methods section for details), are shown

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Source: PubMed

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