Multi-tissue transcriptomic study links AIS GWAS loci to tissue-specific molecular pathways

Adolescent idiopathic scoliosis (AIS) — the spontaneous development of lateral spine curvature during puberty — affects approximately 3% of children worldwide and is the most common paediatric spine disorder. Despite numerous genome-wide association studies (GWAS) identifying risk loci in non-coding genomic regions, translating those associations into biological understanding has remained challenging.

A preprint posted to bioRxiv describes a multi-tissue investigation designed to connect AIS GWAS risk loci to tissue-specific molecular pathology. Using integrated transcriptomic and functional analyses, the authors report tissue-specific patterns of gene expression and regulatory activity at known AIS risk loci, providing candidate biological mechanisms for a condition whose aetiology has hitherto been poorly understood at the molecular level.

This work sits alongside, but is distinct from, a separate PLOS Genetics paper in the current batch (item [17]) examining Yap1's role in vertebral development in zebrafish — both address the genetics of spine curvature disorders from different angles, but use different model systems and study different genes.

The AIS preprint has not yet undergone peer review. The authors note that AIS is currently managed purely symptomatically through bracing and surgery; a clearer mechanistic picture could inform future functional research. The work is likely to be of most interest to researchers in musculoskeletal genetics, developmental biology, and statistical genomics.