Cardioacrofacial Dysplasia 2, also known as cafd2, is related to hypertelorism and polydactyly, postaxial, type a1. An important gene associated with Cardioacrofacial Dysplasia 2 is PRKACB (Protein Kinase CAMP-Activated Catalytic Subunit Beta). Related phenotypes are postaxial hand polydactyly and postaxial foot polydactyly