Transforming growth factor-β3 intron 5 polymorphism as a screening marker for non-syndromic cleft lip with or without cleft palate.

In this study, we evaluated the effect of transforming growth factor β3 intron 5 position +104 A➝G (TGF-β3 IVS5+104AG) transition in patients with a non-syndromic cleft lip with or without cleft palate (NSCL/P). A total of 68 patients and 114 controls were recruited for the study. A genotyping procedure was carried out using the PCR-RFLP method.