SNOMED CT, US Edition

Last uploaded: March 22, 2026
Id http://purl.bioontology.org/ontology/SNOMEDCT/719951002
http://purl.bioontology.org/ontology/SNOMEDCT/719951002
Preferred Name

Triphalangeal thumb with brachyectrodactyly syndrome

Definitions
A rare genetic syndrome with limb duplication, polydactyly, syndactyly, and/or hyperphalangy characterised by duplication anomalies such as triphalangeal thumbs, phalangeal duplication of other digits, and polydactyly, associated with highly variable combinations of ectrodactyly, brachydactyly, and syndactyly of hands and/or feet. Severe nail dysplasia or absence of nails is also observed. This syndrome has characteristics of triphalangeal thumbs and brachydactyly of the hands. Ectrodactyly of the feet and, more rarely, ectrodactyly of the hands were also reported in some family members. Transmission is autosomal dominant. A rare genetic syndrome with limb duplication, polydactyly, syndactyly, and/or hyperphalangy characterized by duplication anomalies such as triphalangeal thumbs, phalangeal duplication of other digits, and polydactyly, associated with highly variable combinations of ectrodactyly, brachydactyly, and syndactyly of hands and/or feet. Severe nail dysplasia or absence of nails is also observed.
Synonyms
Carnevale Hernandez del Castillo syndrome
Triphalangeal thumb with brachyectrodactyly syndrome (disorder)
Type http://www.w3.org/2002/07/owl#Class
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