C9orf72 and amyotrophic lateral sclerosis: Our patient expressed the exonic rs1052352 polymorphism of FUS, which has been previously reported to be closely linked to ALS and FTD.[16] Strong evidence of polymorphisms of C9ORF72, including rs10122902, has been suggested to be genetically associated with sporadic ALS after conducting a genome-wide study and mapping gene expression.[17]