<unk>  is a rare, autosomal recessive disorder that causes severe growth retardation, and has been observed fewer than 30 times before 2011.<unk>  is an acronym that encompasses the predominant traits of the disorder: growth retardation, alopecia, pseudoanodontia (teeth failing to emerge from the gums), and worsening optic atrophy in some subjects. Other common symptoms include premature aging, large, prominent foreheads, and delayed bone aging.<unk>  typically results in premature death around age 30-40, due to interstitial fibrosis and atherosclerosis.
GAPO syndrome
ATR-X syndrome
ATR-16 syndrome
GRACILE syndrome
MEDNIK syndrome
Kindler syndrome
Hecht Scott syndrome
ZTTK syndrome