Neurooculorenal Syndrome, also known as nors, is related to blood group, p1pk system and ichthyosis, congenital, autosomal recessive 1. An important gene associated with Neurooculorenal Syndrome is ROBO1 (Roundabout Guidance Receptor 1). Affiliated tissues include pituitary and kidney, and related phenotypes are sensorineural hearing impairment and cryptorchidism