An autosomal dominant malformation syndrome caused by mutations in TRPS1 characterized by distinctive craniofacial and skeletal abnormalities. TRPS I patients have sparse scalp hair, bulbous tip of the nose, long flat philtrum, thin upper vermilion border, and protruding ears. Skeletal abnormalities include cone-shaped epiphyses at the phalanges, hip malformations, and short stature. The disease is trichorhinophalangeal syndrome type I (Monarch Disease Ontology id MONDO_0008596). Also known as: Sugio-Kajii syndrome, TRPS 1, TRPS1, trichorhinophalangeal dysplasia (syndrome) types 1/3, trichorhinophalangeal dysplasia type I, trichorhinophalangeal dysplasia types 1/3, trichorhinophalangeal syndrome type 1, trichorhinophalangeal syndrome, type 1.