Initially, genes associatedwith clubfoot (PITX1, TBX4, HOXA9, HOXD10, HOXD12,HOXD13, HOXA9, TPM1, TPM2, COL9A1, FLNB, CASP8,CASP10, UTX, CHD1, RIPPLY2, CAND2, WNT7) werescreened for potential variants. This evidence concerns the gene COL9A1 and clubfoot.