Postaxial polydactyly type A1

Common Name(s)

Postaxial polydactyly type A1

Polydactyly refers to the occurrence of supernumerary digits and is the most frequent of congenital hand and foot deformities. Based on the location of the extra digits, polydactyly can be classified into preaxial, involving the thumb or great toe; postaxial, affecting the fifth digit; and central, involving the 3 central digits. Postaxial polydactyly (PAP) is further subclassified into 2 types: in type A, a well-formed extra digit articulates with the fifth or a sixth metacarpal, whereas in type B, a rudimentary, poorly developed extra digit is present (summary by {17:Umm-e-Kalsoom et al., 2012}). Genetic Heterogeneity of Postaxial Polydactyly Other forms of postaxial polydactyly type A include PAPA2 ({602085}) on chromosome 13q21; PAPA3 ({607324}) on chromosome 19p13; PAPA4 ({608562}) on chromosome 7q22; PAPA5 ({263450}) on chromosome 13q13; PAPA6 ({615226}), caused by mutation in the ZNF141 gene ({194648}) on chromosome 4p16; and PAPA7 ({617642}), caused by mutation in the IQCE gene ({617631}) on chromosome 7p22.
 

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Condition Specific Organizations

Following organizations serve the condition "Postaxial polydactyly type A1" for support, advocacy or research.

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Scientific Literature

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Clinical Trial Information This information is provided by ClinicalTrials.gov

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