NCIt definition : Human CC2D2A wild-type allele is located in the vicinity of 4p15.32 and is approximately
132 kb in length. This allele, which encodes coiled-coil and C2 domain-containing
protein 2A, plays a role in ciliogenesis and sonic hedgehog (SHH) signaling. Mutation
of the gene is associated with retinitis pigmentosa 93, Meckel syndrome type 6, Joubert
syndrome type 9 and cerebellar vermis hypoplasia, oligophrenia, ataxia, colobomas,
and hepatic fibrosis (COACH) syndrome 2.;