Although rare, C9orf72 expansions have been implicated in other neurodegenerative and psychiatric diseases including PD [117] and Schizophrenia [118], suggesting a wider role for C9orf72 in neuropathology and perhaps offering some insight towards the heterogeneous phenotype seen in C9orf72 ALS. The gene discussed is C9orf72; the disease is schizophrenia.