MONDO_0012220 (Griscelli syndrome type 3) is a Griscelli syndrome characterized by isolated silvery gray sheen of the hair and hypopigmentation of the skin that has material basis in mutation in the MLPH or MYO5A genes. Also known as: GS3, Griscelli-PruniC)ras syndrome type 3, Griscelli-Pruniéras syndrome type 3, Griscelli-Pruni��ras syndrome type 3.