Short-Rib Thoracic Dysplasia 15 with Polydactyly, also known as srtd15, is related to sitosterolemia 2 and sitosterolemia. An important gene associated with Short-Rib Thoracic Dysplasia 15 with Polydactyly is DYNC2LI1 (Dynein Cytoplasmic 2 Light Intermediate Chain 1). Affiliated tissues include pancreas and liver, and related phenotypes are polyhydramnios and narrow chest