The data showed that LINC00309 high expression associated with poor DFS mainly in Luminal A subtype (p = 0.001) (Additional file 1: Figure S1A), but not in the Luminal B (p = 0.073) (Additional file 1: Figure S1B), Her2 positive (p = 0.422) and basal-like BC (p = 0.471) (data not show). This evidence concerns the gene LINC00309 and breast cancer.