SLAMF1 as a Risk Biomarker for Nontraumatic SAH: Evidence From a Multiomics Study

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BACKGROUND: Subarachnoid hemorrhage (SAH) following aneurysmal rupture remains a devastating cerebrovascular event with limited predictive biomarkers. Accurate prediction of aneurysm rupture risk remains a clinical priority, as it could improve risk prediction and reveal potential therapeutic targets. Leveraging UK Biobank proteomic data, we aimed to identify protein markers associated with SAH risk using observational and genetic analyses. METHODS: <0.05) underwent Mendelian randomization using cis-protein quantitative trait loci; (3) cellular expression profile of significant proteins were examined using single-cell transcriptomic from immunophenotypic atlas of human hematopoietic progenitors. RESULTS: >0.05). Single-cell transcriptomic analysis demonstrated high SLAMF1 expression in CD4-CTM, CD4-activated, and CD4-naive cells, indicating a possible immunologic role in SAH pathophysiology. CONCLUSIONS: Our combined analytical approach identified SLAMF1 as a protein associated with increased SAH risk. SLAMF1, a receptor involved in modulating innate and adaptive immune responses, has been implicated in inflammatory and autoimmune diseases. SLAMF1 and related proteins represent promising biomarkers for SAH risk, potentially enhancing risk stratification, guiding preventive strategies, and informing future therapeutic development. Further research is necessary to explore its mechanistic role in SAH development.

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