Orphanet: Brachydactyly type B2

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Brachydactyly type B2

Disease definition

A clinical subtype of brachydactyly type B characterized by hypoplasia/aplasia of distal and/or middle phalanges in fingers and toes II-V (frequently severe in fingers/toes IV-V, milder in fingers/toes II-III) in association with proximal, and occasionally distal, symphalangism, fusion of carpal/tarsal bones and partial cutaneous syndactyly. Additional reported features include proximal placement of thumbs, sensorineural hearing loss and farsightedness.


Classification level: Subtype of disorder
  • Synonym(s): -
  • Prevalence: -
  • Inheritance: Autosomal dominant 
  • Age of onset: Neonatal
  • ICD-10: Q73.8
  • OMIM: 611377
  • UMLS: C1969652
  • MeSH: -
  • GARD: -
  • MedDRA: -
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