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  • Title: Further evidence for the involvement of MYH9 in the etiology of non-syndromic cleft lip with or without cleft palate.
    Author: Birnbaum S, Reutter H, Mende M, de Assis NA, Diaz-Lacava A, Herms S, Scheer M, Lauster C, Braumann B, Schmidt G, Martini M, Hemprich A, Pötzsch S, Knapp M, Nöthen MM, Kramer FJ, Mangold E.
    Journal: Eur J Oral Sci; 2009 Apr; 117(2):200-3. PubMed ID: 19320731.
    Abstract:
    Non-syndromic cleft lip with or without cleft palate (NSCL/P) is one of the most common birth defects and has a multifactorial etiology that includes both genetic and environmental components. MYH9, the gene coding for the heavy chain of non-muscle myosin II, has been considered as a good candidate gene in NSCL/P on the basis of its expression profile during craniofacial morphogenesis. Reports in an Italian sample, as well as in an ethnically mixed North American sample, of a positive association between single-nucleotide polymorphisms in the MYH9 gene and NSCL/P have provided further support for the role of MYH9 in the development of NSCL/P. In the present study, we aimed to replicate these findings by conducting a family-based association study with seven single nucleotide polymorphisms in MYH9 using a sample of 248 NSCL/P patients and their parents. Single marker analysis resulted in a highly significant association for rs7078. In haplotype analysis, the most significant result was obtained for the SNP combination (rs7078; rs2071731; rs739097; rs5995288). Our results thus confirm the potential involvement of MYH9 in the etiology of NSCL/P in our patients of Central European origin, although further studies are warranted to determine its exact pathogenetic role.
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