Bosma Arhinia Microphthalmia Syndrome, also known as arhinia, choanal atresia, microphthalmia, and hypogonadotropic hypogonadism, is related to microphthalmia and muscular dystrophy. An important gene associated with Bosma Arhinia Microphthalmia Syndrome is SMCHD1 (Structural Maintenance Of Chromosomes Flexible Hinge Domain Containing 1). Affiliated tissues include olfactory bulb and eye, and related phenotypes are cataract and inguinal hernia