Any non-syndromic pontocerebellar hypoplasia in which the cause of the disease is a mutation in the VRK1 gene. The disease is pontocerebellar hypoplasia type 1A (MONDO_0011866). Also known as: VRK1 non-syndromic pontocerebellar hypoplasia, non-syndromic pontocerebellar hypoplasia caused by mutation in VRK1.