Microcephaly 3, Primary, Autosomal Recessive, also known as mcph3, is related to microcephaly and primary microcephaly. An important gene associated with Microcephaly 3, Primary, Autosomal Recessive is CDK5RAP2 (CDK5 Regulatory Subunit Associated Protein 2). Affiliated tissues include cortex and brain, and related phenotypes are global developmental delay and widely spaced teeth