cerebellar dysfunction with variable cognitive and behavioral abnormalities (Monarch Disease Ontology identifier MONDO_0013886) can be described as follows. Non-progressive cerebellar ataxia with intellectual deficit is a rare subtype of autosomal dominant cerebellar ataxia type 1 (ADCA type 1) characterized by the onset in infancy of cerebellar ataxia, neonatal hypotonia (in some), mild developmental delay and, in later life, intellectual disability. Less common features include dysarthria, dysmetria and dysmorphic facial features (long face, bulbous nose long philtrum, thick lower lip and pointed chin). Also known as: CAMTA1-related disorder, CANPMR, cerebellar ataxia, nonprogressive, with intellectual disability, cerebellar ataxia, nonprogressive, with mental retardation, non-progressive cerebellar ataxia with intellectual disability, nonprogressive cerebellar ataxia with intellectual disability, nonprogressive cerebellar ataxia with mental retardation.