This meta-analysis was conducted with the aim of investigating the association between <i>WNT3</i> gene polymorphisms and non-syndromic cleft lip (CL) with or without cleft palate (NSCL/P) predisposition.
We used DNA from 167 Japanese NSCL±P patients (45 cleft lip without cleft palate and 122 cleft lip with cleft palate patients) and 190 Japanese unaffected control individuals.
Single nucleotide polymorphisms located at chromosomal region 1p22 are not found to be associated with cleft lip with or without non-syndromic cleft palate (NSCL/P) and non-syndromic cleft palate only (NSCPO) at either the genotype or allele levels.