Klhl7-Related Bohring-Opitz-Like and Crisponi/cold-Induced Sweating-Like Overlap Syndrome, also known as perching syndrome, is related to perching syndrome and hydrocephalus, congenital, 1. An important gene associated with Klhl7-Related Bohring-Opitz-Like and Crisponi/cold-Induced Sweating-Like Overlap Syndrome is KLHL7 (Kelch Like Family Member 7). Affiliated tissues include eye.