Breasts and/or Nipples, Aplasia or Hypoplasia of, 1 (BNAH1)

Breasts and/or Nipples, Aplasia or Hypoplasia of, 1, also known as amastia, is related to branchial arch abnormalities, choanal atresia, athelia, hearing loss, and hypothyroidism syndrome and isolated congenital breast hypoplasia/aplasia. Affiliated tissues include breast and thyroid, and related phenotypes are choanal atresia and hypoplastic areola