Any autosomal dominant non-syndromic intellectual disability in which the cause of the disease is a mutation in the GRIN1 gene. The disease is neurodevelopmental disorder with or without hyperkinetic movements and seizures, autosomal dominant (MONDO_0013655). Also known as: GRIN1 autosomal dominant non-syndromic intellectual disability, MRD8, NDHMSD, autosomal dominant intellectual disability 8, autosomal dominant mental retardation 8, autosomal dominant non-syndromic intellectual disability caused by mutation in GRIN1, intellectual disability, autosomal dominant 8, intellectual disability, autosomal dominant type 8.