Microcephaly and Chorioretinopathy, Autosomal Recessive, 2, also known as mccrp2, is related to microcephaly and chorioretinopathy 2. An important gene associated with Microcephaly and Chorioretinopathy, Autosomal Recessive, 2 is PLK4 (Polo Like Kinase 4). Affiliated tissues include pons, and related phenotypes are optic atrophy and retinopathy