Short-Rib Thoracic Dysplasia 4 with or Without Polydactyly (SRTD4)

Short-Rib Thoracic Dysplasia 4 with or Without Polydactyly, also known as asphyxiating thoracic dystrophy 4, is related to short-rib thoracic dysplasia 5 with or without polydactyly and short rib-polydactyly syndrome. An important gene associated with Short-Rib Thoracic Dysplasia 4 with or Without Polydactyly is TTC21B (Tetratricopeptide Repeat Domain 21B), and among its related pathways/superpathways are Organelle biogenesis and maintenance and Signaling by Hedgehog. Affiliated tissues include pancreas and liver, and related phenotypes are brachydactyly and narrow chest