RBFOX1 and myotonic dystrophy type 2: In humans, rbFOX1 binds to mRNAs that are enriched in pathways involved in cortical neuronal development45,68, and mutations or deletions within the rbFOX1 gene have been identified in patients with neurological disorders including epilepsy, schizophrenia, mental retardation and autism69–71, which are different from the symptoms observed in DM2.