After excluding pathological C9ORF72 repeat length carriers and FTD patients without C9ORF72 data (N = 28/52 carriers/unknown in discovery, N = 25/58 in replication) the association was no longer significant in both the discovery (rs117204439; P = 0.05; OR = 2.12, rs147211831 P = 0.15; OR = 1.87) and the replication cohorts (rs117204439 P = 0.60; OR = 1.32, rs147211831 P = 0.09; OR = 2.33). This evidence concerns the gene C9orf72 and frontotemporal dementia.