Preferred Label : Polydactyly, postaxial, type a1;
Symbol : PAPA1;
CISMeF acronym : PAPA; PAPA1; PAPB;
Type : Phenotype, molecular basis known;
Alternative titles and symbols : Postaxial polydactyly, type a; Polydactyly, postaxial; PAPA;
Included titles and symbols : Postaxial polydactyly, type b; PAPB;
Description : 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 Umm-e-Kalsoom et
al., 2012). - Genetic Heterogeneity of Postaxial Polydactyly Other loci for autosomal
dominant postaxial polydactyly type A include;
Inheritance : Autosomal dominant;
Molecular basis : Caused by mutation in the GLI-Kruppel family member GLI3 gene (GLI3, 165240.0004);
Prefixed ID : #174200;
Origin ID : 174200;
UMLS CUI : C4282400;
Automatic exact mappings (from CISMeF team)
DO Cross reference
Genes related to phenotype
HPO term(s)
ORDO concept(s)
See also inter- (CISMeF)
Semantic type(s)
Validated automatic mappings to NTBT