For example, gap junction dysfunction in congenital oculodentodigital dysplasia arising from an autosomal dominant mutation of the gap junction protein alpha-1 (GJA1) gene coding for connexin43 results in iridociliary cysts, thought to be due to abnormal adhesion of epithelial cells [11]. This evidence concerns the gene GJA1 and oculodentodigital dysplasia.