Two genes, COL4A1 and COL4A2, were suggested to be important genetic contributors of optic nerve hypoplasia (ONH).
Why this matters
ONH is a congenital malformation that causes visual impairment and blindness in children and secondary symptoms such as intellectual disability, autism, and brain malformations. ONH has a low prevalence of 17.3/100,000 in Sweden. The results of this study will help more individuals with ONH receive a genetic diagnosis in the future.