Follow-up analysis of C9-FTD/ALS patients presented that RNA foci co-localizes with SRSF2, hnRNPH/F, and ALYREF in cerebellar granule cells as well as in motor neurons, while hnRNPA1 co-localizes only with cerebellar granule cells. Here, HNRNPH2 is linked to frontotemporal dementia.