SAIMSARA Journal

Machine Generated Science • ISSN 3054-3991

Y Chromosome Loss: Systematic Review with ☸️SAIMSARA

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Longevity

Issue 2, Volume 1, 2026

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• Last update: 2026-03-22 14:07:28
What is this paper about
Y chromosome loss emerges in this paper not as a passive marker of ageing, but as a potentially central male-specific biological signal linked to cardiovascular death, cancer progression, neurodegeneration, and immune dysfunction across a massive evidence base. The full paper is worth reading because it shows where this signal is strongest, how consistent it is across 1,048 original studies, and why LOY may become both a prognostic biomarker and a future therapeutic target.

DOI: 10.62487/saimsaraab15307b

Abstract: This paper aims to systematically review and synthesize the current academic understanding of Y chromosome loss, identifying its prevalence, associated pathologies, underlying mechanisms, and clinical and research implications. The review utilises 1048 original studies with 5855590 total participants (naïve ΣN). Loss of the Y chromosome (LOY) is a prevalent, age-related genomic alteration in men, profoundly influencing health outcomes across a spectrum of diseases. This systematic review highlights LOY as a significant risk factor for increased mortality, particularly from cardiovascular events, with substantial LOY associated with a 68% higher risk of myocardial infarction. It is implicated in the pathogenesis and prognosis of numerous cancers, neurodegenerative disorders, and other systemic conditions, often by modulating immune responses and cellular metabolism. While many studies are correlational, the consistent associations underscore the importance of LOY in male-specific disease biology. A key limitation is the frequent lack of long-term prospective data, necessitating future large-scale cohort studies to definitively establish causality and validate LOY as a robust prognostic and therapeutic biomarker.

Keywords: Loss of Y chromosome; Mosaic LOY; Cancer; Tumor progression; Alzheimer's disease; Clonal hematopoiesis; Cardiovascular disease; Myocardial infarction; Amyotrophic lateral sclerosis

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