is an inherited condition characterized by cartilage calcification in the ears, nose, larnyx, trachea (voice box), and ribs; pulmonary artery stenoses; brachytelephalangism (short fingers and nails that resemble drumsticks); and facial dysmorphism. Less than 30 cases have been reported in the literature. The majority of affected individuals have been diagnosed during childhood. Other associated features may include hearing loss, recurrent otitis and/or sinusitis, mild intellectual disability, frequent respiratory infections, nasal speech and rarely, seizures, and short stature. This condition is inherited in an autosomal recessive fashion and is caused by mutations in the MGP gene. Source: Genetic and Rare Diseases Information Center (GARD), supported by ORDR-NCATS and NHGRI.