Abstract
The Greig cephalopolysyndactyly syndrome (GCPS) is a rare, autosomal dominant, pleiotropic, multiple congenital anomaly syndrome. The typical findings include hypertelorism, macrocephaly with frontal bossing, and polysyndactyly. We present two families, with GCPS with a non-syndromic phenotype, without the characteristic craniofacial anomalies and with the presence of complex digital anomalies including various types of polydactyly and syndactyly of the fingers and toes. The cases were proven to be GCPS by mutational analysis of GL13 gene. Our patients support the fact that the phenotypic spectrum of GL13 mutations is broader than that encompassed by the usual clinical diagnostic criteria. Individuals with features of familial polysyndactyly should be screened for mutations in GL13 even if they do not fulfill clinical criteria.
Published Version
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