Metaphyseal chondrodysplasia, McKusick type
Type of disease: Rare conditions
Cartilage-hair hypoplasia is a disorder of bone growth characterized by short stature (dwarfism) with other skeletal abnormalities; fine, sparse hair (hypotrichosis); and abnormal immune system function (immune deficiency) that can lead to recurrent infections. Signs and symptoms may vary among affected individuals. People with this condition are also at an increased risk of developing cancer, particularly blood, skin, and immune system cancers. Gastrointestinal problems are also common. Cartilage-hair hypoplasia is caused by mutations in the RMRP gene and is inherited in an autosomal recessive fashion. Source: Genetic and Rare Diseases Information Center (GARD), supported by ORDR-NCATS and NHGRI.