1. Interleukin-18 and outcome after allogeneic stem cell transplantation: A retrospective cohort study
- Author
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David Schult, Thomas Luft, Carsten Müller-Tidow, Peter Dreger, Aleksandar Radujkovic, Hao Dai, Dietrich W. Beelen, Lambros Kordelas, and Joshua Majer-Lauterbach
- Subjects
Adult ,Male ,0301 basic medicine ,Oncology ,medicine.medical_specialty ,Research paper ,Neutrophils ,Graft vs Host Disease ,lcsh:Medicine ,Disease ,Polymorphism, Single Nucleotide ,General Biochemistry, Genetics and Molecular Biology ,03 medical and health sciences ,0302 clinical medicine ,Cause of Death ,Internal medicine ,medicine ,Clinical endpoint ,Humans ,Transplantation, Homologous ,Mortality ,Prospective cohort study ,Outcome ,Retrospective Studies ,lcsh:R5-920 ,business.industry ,Incidence ,Incidence (epidemiology) ,lcsh:R ,Hazard ratio ,Interleukin-18 ,Hematopoietic Stem Cell Transplantation ,Reproducibility of Results ,Retrospective cohort study ,General Medicine ,Middle Aged ,Allogeneic stem cell transplantation ,Transplantation ,Treatment Outcome ,030104 developmental biology ,Case-Control Studies ,030220 oncology & carcinogenesis ,Multivariate Analysis ,Cohort ,Female ,lcsh:Medicine (General) ,business - Abstract
Background: Interleukin-18 (IL-18) is involved in endothelial activation and dysfunction, and in the pathogenesis and severity of acute graft-versus-host disease (aGVHD). Its relevance for patient outcome after allogeneic stem cell transplantation (alloSCT) has not yet been comprehensively addressed. Methods: Pre-transplant serum levels of free IL-18 were retrospectively assessed in a cohort of 589 patients (training cohort). Results were validated in 688 patients allografted in a different centre. The primary endpoint was overall survival (OS). Secondary endpoints included incidences of non-relapse mortality (NRM), relapse, and aGVHD. Findings: In the training cohort, higher pre-transplant levels of free IL-18 were significantly associated with worse OS (hazard ratio [HR] per 1-log2 increase, 1.25, P = 0.008) in multivariable models. This was due to a higher hazard of NRM (HR per 1-log2 increase, 1.39, P = 0.001), rather than relapse. The associations of pre-transplant free IL-18 with higher NRM (HR per 1-log2 increase, 1.24, P = 0.02) and shorter OS (HR per 1-log2 increase, 1.22, P = 0.006) were confirmed in the validation cohort. In both cohorts, the correlations of higher pre-transplant free IL-18 serum levels with increased NRM and worse OS were mainly driven by fatal infectious complications. No associations with incidence of aGVHD were observed. Interpretation: Higher pre-transplant levels of free IL-18 were associated with non-relapse and overall mortality after alloSCT. Our results may provide a rationale for prospective studies evaluating IL-18 status and inhibition of IL-18 activity in patients undergoing allografting. Keywords: Interleukin-18, Allogeneic stem cell transplantation, Outcome, Mortality
- Published
- 2019