Hypomyelinating Leukodystrophy 8, also known as hld8, is related to leukodystrophy, hypomyelinating, 8, with or without oligodontia and/or hypogonadotropic hypogonadism and leukodystrophy, hypomyelinating, 7, with or without oligodontia and/or hypogonadotropic hypogonadism. An important gene associated with Hypomyelinating Leukodystrophy 8 is AVPR2 (Arginine Vasopressin Receptor 2). Related phenotype is integument.