Fig. 1From: A heterozygous duplication variant of the HOXD13 gene caused synpolydactyly type 1 with variable expressivity in a Chinese familyPedigree of a Chinese family with autosomal-dominant synpolydactyly type 1 (SPD1). Symbols filled with black color are affected members of the family and open symbols represents unaffected members of the family. Arrow indicates the proband (V-1). The sign (*) above the symbols shows members from whom blood samples were attainedBack to article page