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Revista médica de Chile

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VIEIRA, Alexandre R et al. Mutational analysis of the muscle segment homeobox gene 1 (MSX1) in Chilean patients with cleft lip/palate . Rev. méd. Chile [online]. 2004, vol.132, n.7, pp.816-822. ISSN 0034-9887.

Background: Mutations of the MSX1 gene may contribute to nonsyndromic forms of cleft lip and/or cleft palate. Aim: To search for mutations of MSX1 coding regions, including one highly conserved non-coding region in the single intron, among Chilean patients with cleft lip/palate. Patients and Methods: We studied 45 patients with cleft lip/palate and their parents. Oral mucosa samples were obtained with a swab. DNA was extracted and amplified by PCR. Results: Two missense mutations (G16D and G34A) were identified in this study that may be useful for future admixture studies. The G16D mutation appears to disrupt a possible splicing site and may contribute to clefting in this population. Conclusions: Rare MSX1 mutations are found in some cases of cleft lip and/or cleft palate but others remain to be found most likely in other regulatory regions of the gene (Rev Méd Chile 2004; 132: 816-22)

Keywords : Abnormalities, multiple; Cleft lip; Genome library; MSX1 gene; Mutation, missense.

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