STMN2 and amyotrophic lateral sclerosis: In total, the STMN2 CE junction was detected in the frontal cortex of 7 of 9 subjects in the C9-FTD group, 6 of 6 subjects in the C9-ALS/FTD group, and 4 of 10 subjects in the C9-ALS group (Fig. 1f).