Primary Bone Dysplasia with Multiple Joint Dislocations, also known as primary skeletal dysplasia with multiple joint dislocations, is related to leukodystrophy, hypomyelinating, 26, with chondrodysplasia and leukodystrophy. An important gene associated with Primary Bone Dysplasia with Multiple Joint Dislocations is POLR1C (RNA Polymerase I And III Subunit C). Affiliated tissues include bone.