Short-Rib Thoracic Dysplasia 2 with or Without Polydactyly, also known as asphyxiating thoracic dystrophy 2, is related to short-rib thoracic dysplasia 1 with or without polydactyly and short-rib thoracic dysplasia 12. An important gene associated with Short-Rib Thoracic Dysplasia 2 with or Without Polydactyly is IFT80 (Intraflagellar Transport 80). Affiliated tissues include pancreas and liver, and related phenotypes are brachydactyly and narrow chest