Non-progressive cerebellar ataxia with mental retardation (CANPMR, OMIM 614756) and chromosome 1p32-p31 deletion syndrome (OMIM 613735) are two very rare inherited disorders, which are caused by mono-allelic deficiency (haplo-insufficiency) of calmodulin-binding transcription activator 1 (CAMTA1) and, respectively, nuclear factor 1 A (NFIA) genes. Here, NFIA is linked to cerebellar dysfunction with variable cognitive and behavioral abnormalities.