IL6 and neoplasm: Of note, high expression levels of FGF2 (encoding Basic FGF, HR = 1.988, 95% CI = 1.15–3.436, and p = 0.0138 for the high vs. low FGF2 expression stage II subgroup; Fig. 3B) and IL6 (HR = 1.887, 95% CI = 1.071–3.327, and p = 0.028 for the high vs. low IL6 expression stage II subgroup; Fig. 3B) in tumor tissues influenced RFS of stage II LUAD patients.