Corpus Callosum, Agenesis of, with Impaired Intellectual Development, Ocular Coloboma, and Micrognathia, also known as mrxs28, is related to corpus callosum agenesis-intellectual disability-coloboma-micrognathia syndrome. An important gene associated with Corpus Callosum, Agenesis of, with Impaired Intellectual Development, Ocular Coloboma, and Micrognathia is IGBP1 (Immunoglobulin Binding Protein 1). Affiliated tissues include brain.