MedGen

Ullrich congenital muscular dystrophy-1 (UCMD1) is characterized by generalized muscle weakness and striking hypermobility of distal joints in conjunction with variable contractures of more proximal joints and normal intelligence. Additional findings may include kyphoscoliosis, protruded calcanei, and follicular hyperkeratosis. Some patients manifest at birth and never achieve independent ambulation, whereas others maintain ambulation into adulthood. Progressive scoliosis and deterioration of respiratory function is a typical feature (summary by Kirschner, 2013). For general phenotypic information and a discussion of genetic heterogeneity of Ullrich congenital muscular dystrophy, see UCMD1A (254090). [from OMIM]

Bethlem myopathy-1 (BTHLM1) is a congenital muscular dystrophy characterized by distal joint laxity and a combination of distal and proximal joint contractures. Weakness usually begins in mid-childhood or adolescence, but progression is slow and ambulation is retained into adulthood (summary by Butterfield et al., 2013). For general phenotypic information and a discussion of genetic heterogeneity of Bethlem myopathy, see BTHLM1A (158810). [from OMIM]

Dystonia-27 (DYT27) is an autosomal recessive neurologic disorder characterized by onset of segmental isolated dystonia mainly affecting the craniocervical region and upper limbs in the first 2 decades of life (summary by Zech et al., 2015). [from OMIM]