Abstract
VEXAS syndrome is an X-linked monogenic disease with adult-onset inflammatory disease and myeloid dysplasia, with clinical presentation ensuing in the fifth decade of life or later. Inflammatory symptoms associated with VEXAS syndrome are treated with several lines of therapy, eventually requiring allogeneic hematopoietic cell transplantation (allo-HCT). No evidence from randomized controlled trials exists on allo-HCT versus other treatments in patients not responding to front-line therapy(ies). We show results of a systematic review/meta-analysis (SR/MA) following a search using EMBASE, PUBMED/MEDLINE and Web of Science on April 5, 2024. We extracted outcomes based on benefits (overall response rate (ORR), complete remission (CR), event-free survival (EFS) and overall survival (OS), and harms (non-relapse mortality (NRM) and acute and chronic graft-versus-host disease (GVHD)). Thesearch identified 88 studies. Four studies (39 patients) met inclusion criteria. Median follow-up time after allo-HCT ranged from 8 to 18.5 months. Pooled EFS and OS rates were 56% and 86%, respectively. Pertaining to harms, pooled NRM rate was 14%. Pooled rates of acute and chronic GVHD were 42% and 13%, respectively. Allo-HCT is an effective treatment for VEXAS syndrome. We hope these results would increase awareness about this underdiagnosed and underreported disease.
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