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Large-scale GWAS of strabismus identifies risk loci and provides support for a link with maternal smoking

Strabismus is a common pediatric eye misalignment and has complex genetic and environmental causes. Previous genome-wide association studies (GWAS) encountered difficulties in identifying strabismus risk variants due to heterogeneity and small samples. We performed large meta-analyses of 11 European-ancestry GWAS (7 sources), analysing broad strabismus (20,464 cases, 954,921 controls) and subtypes (esotropia/exotropia). We discovered 4 loci (e.g., NPLOC4-TSPAN10-PDE6G-FAAP100, COL6A1) for strabismus and 5 additional loci (e.g., CHRNA4, MAD1L1) for strabismus subtypes, we successfully replicated the previously reported strabismus variant near NPLOC4-TSPAN10-PDE6G-FAAP100. Using mendelian randomisation, we found genetic evidence supporting maternal smoking as a causal risk factor for strabismus in offspring.

Year of publication

2025

Journal

Nature

Author(s)

He, W.
van der Most, P.J.
Ong, J.S.
H. L.D.
Wu, Y.
Magnø, M.S.
et. al.

Full publication

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