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MedGen UID:
Concept ID:
Disease or Syndrome
Synonym: Anonychia-Ectrodactyly
Monarch Initiative: MONDO:0007132
OMIM®: 106900

Clinical features

From HPO
Aplasia of metacarpal bones
MedGen UID:
Concept ID:
Developmental defect associated with absence of one or more metacarpal bones.
Split hand
MedGen UID:
Concept ID:
Congenital Abnormality
A condition in which middle parts of the hand (fingers and metacarpals) are missing giving a cleft appearance. The severity is very variable ranging from slightly hypoplastic middle fingers over absent middel fingers as far as oligo- or monodactyl hands.
Ectodermal dysplasia
MedGen UID:
Concept ID:
Disease or Syndrome
Ectodermal dysplasia is a group of conditions in which there is abnormal development of the skin, hair, nails, teeth, or sweat glands.
MedGen UID:
Concept ID:
Congenital Abnormality
Congenital anonychia is defined as the absence of fingernails and toenails. Anonychia and its milder phenotypic variant, hyponychia, usually occur as a feature of genetic syndromes, in association with significant skeletal and limb anomalies. Isolated nonsyndromic congenital anonychia/hyponychia is a rare entity that usually follows autosomal recessive inheritance with variable expression, even within a given family. The nail phenotypes observed range from no nail field to a nail field of reduced size with an absent or rudimentary nail (summary by Bruchle et al., 2008). This form of nail disorder is referred to here as nonsyndromic congenital nail disorder-4 (NDNC4). For a list of other nonsyndromic congenital nail disorders and a discussion of genetic heterogeneity, see NDNC1 (161050).

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