<unk> , is a rare congenital malformation syndrome where infants are born with a cleft palate, micrognathia, Wormian bones, congenital heart disease, dislocated hips, bowed fibulae, preaxial polydactyly of the feet, abnormal skin patterns, and most prominently, missing tibia. The etiology is unknown.<unk>  is named after Chen-Kung<unk> , R.L.<unk> , and W.H.<unk>  who first described the syndrome in 1975 at Washington University in St. Louis. It is considered a rare disease by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH).
Ho–Kaufman–Mcalister syndrome
Zamzam–Sheriff–Phillips syndrome
Hapnes Boman Skeie syndrome
Laugier–Hunziker syndrome
Young–Simpson syndrome
Young–Madders syndrome
Wallis–Zieff–Goldblatt syndrome
Cronkhite–Canada syndrome