SRSF1 and amyotrophic lateral sclerosis: While certain proteins that prefer to bind G-rich sequence, like hnRNP H/F, have been found to associate strongly with the GGGGCC repeats of C9FTD/ALS, other interacting proteins do not appear to have strong GGGGCC sequence-binding specificity, such as ALY/REF, SC-35, SF2, and nucleolin [47, 108, 175].