Ready-to-use ELISA kits are available for the detection of microcephaly, primary autosomal recessive 1, an alias of the protein, microcephalin 1. The official gene symbol is MCPH1. The protein, with a mass of 92.8 kDa and length of 835 residues, is reported to be cytoplasmic. It may be known by other names, including: BRIT1, truncated microcephalin, BRCT-repeat inhibitor of TERT expression 1, and microcephalin.