Brachydactyly type E comprises one or more shortened metacarpals and metatarsals (summary by Johnson et al., 2003). Another form of brachydactyly type E, BDE2 (613382), is caused by heterozygous mutation in the PTHLH gene (168470) on chromosome 12p11. Also see the hypertension and brachydactyly syndrome (112410).

Hereditary multiple osteochondromas (HMO), previously called hereditary multiple exostoses (HME), is characterized by growths of multiple osteochondromas, benign cartilage-capped bone tumors that grow outward from the metaphyses of long bones. Osteochondromas can be associated with a reduction in skeletal growth, bony deformity, restricted joint motion, shortened stature, premature osteoarthrosis, and compression of peripheral nerves. The median age of diagnosis is three years; nearly all affected individuals are diagnosed by age 12 years. The risk for malignant degeneration to osteochondrosarcoma increases with age, although the lifetime risk for malignant degeneration is low (~2%-5%).

Partial or complete wasting (atrophy) of the skin.