Wikipedia
Synpolydactyly
Synpolydactyly is a joint presentation of syndactyly (fusion of digits) and polydactyly (production of supernumerary digits). This is often a result of a mutation in the HOX D13 gene.
Types include:
OMIM
Name
Gene
SPD1
HOXD13
SPD2
FBLN1
SPD3
? at 14q11.2-q12