2.2.2. Oculodentodigital Dysplasia (ODDD), Craniometaphyseal Dysplasia Autosomal Recessive (CMDR), Pantopalmar Keratoderma and Alopecia (PKA), Erythrokeratodermia Variabilis et Progressiva (EKVP), Syndactyly Type III––Cx43 Mutations. This evidence concerns the gene GJA1 and craniometaphyseal dysplasia, autosomal recessive.