IFT140 and short-rib thoracic dysplasia 9 with or without polydactyly: Bi-allelic pathogenic variants in IFT140 have been associated with the syndromic ciliopathy Short-Rib Thoracic Dysplasia 9 with or without Polydactyly (SRTD9 (MIM: 266920)), also known as Mainzer–Saldino Syndrome [16,17,18].