Genetics

This blog post examines a recent study proposing that elevated serotonin may increase susceptibility to multiple sclerosis by suppressing adenosine deaminase activity and disrupting adenosine-mediated immune regulation. By integrating Mendelian randomisation, single-cell transcriptomics, functional enrichment analysis and machine-learning-based biomarker discovery, the researchers identify the serotonin–ADA axis as a potential link between metabolism, neuroinflammation and immune-cell dysfunction. The study also highlights IK, UBA52 and CCDC25 as candidate diagnostic biomarkers, while emphasising that experimental validation and prospective clinical studies are required before these findings can inform therapeutic or diagnostic practice.