The poliovirus receptor related-1 (PVRL1) gene encodes nectin-1, a cell-cell adhesion molecule (OMIM #600644), and is mutated in the cleft lip with or without cleft palate/ectodermal dysplasia-1 syndrome (CLPED1, OMIM #225000). In addition, PVRL1 mutations have been associated with nonsyndromic cleft lip with or without a cleft palate (NSCL/P) in studies of multiethnic samples. To investigate the possible involvement of this gene in southern Han Chinese NSCL/P patients, we performed (i) a case-control association study, and (ii) a resequencing study.
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