a al., 2011; Snowden et al., 2012).The neu- ropathology may be also heterogeneous (Murray et al., 2011; Snowden, 2012). Further, in a recent study, Huey et al. (2012) screened DNA samples from a large cohort of unrelated subjects with schizo- phrenia for mutation in the C9ORF72 gene. Interest- ingly, none