A novel GJA1 mutation causing familial oculodentodigital dysplasia with dilated cardiomyopathy and arrhythmia

Oculodentodigital dysplasia (ODDD) is an autosomal dominant syndrome that presents with craniofacial and limb dysmorphisms caused by mutations in the GJA1 gene, which codes for connexin 43 (Cx43), a gap junction protein important in cell-to-cell communication. We present for the first time a family with ODDD, progressive cardiac conduction system disease, and dilated cardiomyopathy.