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  • Title: [Cleft lip and palate in the Chilean population: association with BamH1 polymorphism of the transforming growth factor alpha (TGFA) gene].
    Author: Jara L, Blanco R, Chiffelle I, Palomino H, Curtis D.
    Journal: Rev Med Chil; 1993 Apr; 121(4):390-5. PubMed ID: 8272608.
    Abstract:
    In recent studies we have demonstrated that the model that better explains the genetic etiology of non syndromic cleft lip/palate (CL/P) in the Chilean population is one that postulates the existence of a major dominant autosomic locus with low penetrance, without discarding the possible influence of polygenes. Similar conclusions have been communicated by others authors in different populations. Thus, investigations have been initiated to seek possible associations between candidate genes and restriction length polymorphisms (RFLP's), specifically between Transforming Growth Factor Alpha (TGFA) gene RFLP's and CL/P, in caucasian populations. Results thus far obtained have been inconclusive. Therefore, the aim of this work was to study this association in the Chilean population, that is ethnically different. The gene and phenotype frequencies of the TGFA gene BamH1 polymorphism in CL/P probands (n = 21) and controls (n = 16) were determined. No significant differences were detected in the frequencies of the A1 and A2 alleles of the TGFA gene between probands and controls. These results do not support an association between the cleft palate phenotype and TGFA RFLP.
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