Trends in Late Mortality and Life Expectancy After Autologous Blood or Marrow Transplantation Over Three Decades: A BMTSS Report.

Purpose: We determined trends in life expectancy and cause-specific late mortality after autologous blood or marrow transplantation (BMT) performed over a 30-year period, using the BMT Survivor Study.
Methods: We constructed a cohort of 4,702 individuals with hematologic neoplasms who lived ≥ 2 years after autologous BMT performed between 1981 and 2014 at three transplant centers. The end of follow-up was April 19, 2021. The primary exposure variable was autologous BMT performed in four eras: 1981-1999; 2000-2005; 2006-2010; and 2011-2014. Vital status and cause of death were obtained from National Death Index Plus program and Accurinct databases.
Results: The median age at BMT was 53 years (range, 0-78 years), 58.7% were male, 67.8% were non-Hispanic White, and 28.3% had undergone transplantation between 2011 and 2014. Autologous BMT recipients experienced a 7-year reduction in life expectancy. The adjusted hazard of 5-year all-cause mortality declined over the four eras (reference: 1981-1999; hazard ratio [HR] _2000-2005 = 0.77; 95% CI, 0.62 to 0.94; HR _2006-2010 = 0.64; 95% CI, 0.51 to 0.79; HR _2011-2014 = 0.56; 95% CI, 0.45 to 0.71; P _trend < .001), as did years of life lost (5.0 years to 1.6 years). The reduction in all-cause mortality was most pronounced among those transplanted for Hodgkin lymphoma or plasma cell dyscrasias, but was not observed among those transplanted for non-Hodgkin lymphoma or those conditioned with total-body irradiation. We also observed a decline in late deaths because of infection ( P _trend < .0001; primarily for BMTs before 2006) and subsequent neoplasms ( P _trend = .03; confined to decline in therapy-related myeloid neoplasm-related mortality) but not because of cardiovascular or renal disease.
Conclusion: Late mortality among autologous BMT recipients has declined over a 30-year period. However, ongoing efforts are needed to mitigate development of infections, subsequent neoplasms, and cardiovascular and renal disease to further reduce late mortality.
Competing Interests: Smita BhatiaThis author is an Associate Editor for Journal of Clinical Oncology. Journal policy recused the author from having any role in the peer review of this manuscript. Wendy LandierResearch Funding: Merck Sharp & Dohme (Inst) Stephen J. FormanStock and Other Ownership Interests: MustangBio, Lixte BiotechnologyConsulting or Advisory Role: Alimera Sciences, Lixte Biotechnology, MustangBioResearch Funding: MustangBioPatents, Royalties, Other Intellectual Property: MustangBio Daniel J. WeisdorfConsulting or Advisory Role: Incyte, Fate TherapeuticsResearch Funding: Incyte Mukta AroraConsulting or Advisory Role: Fate TherapeuticsResearch Funding: Syndax (Inst), Kadmon (Inst), Pharmacyclics (Inst)No other potential conflicts of interest were reported.