Short-Rib Thoracic Dysplasia 17 with or Without Polydactyly, also known as srtd17, is related to immune-mediated necrotizing myopathy and thoracolaryngopelvic dysplasia. An important gene associated with Short-Rib Thoracic Dysplasia 17 with or Without Polydactyly is DYNLT2B (Dynein Light Chain Tctex-Type 2B). Affiliated tissues include pancreas and bone, and related phenotypes are short ribs and horizontal ribs