autosomal dominant disorder characterized by intellectual disability, developmental delay,
seizures, hypotonia, hearing loss, and optic nerve atrophy. This syndrome is caused by loss-
of-function variants in the nuclear receptor subfamily 2 group F member 1 (NR2F1) gene. To
date, approximately 80 patients have been reported with BBSOAS. Here, we describe a 3-
year-old infant with delayed development, intellectual disability, strabismus, nystagmus, and …