Cataracts in the eye lens are associated with mutations in Cx46, while mutations in the GJA1 gene which encodes Cx43 lead to a rare autosomal syndrome called oculodentodigital dysplasia (ODD) in which patients display diverse phenotypes such as bone malformations, vision loss, and hypotrichosis (49, 50). Here, GJA1 is linked to hypotrichosis.