IL2 and lung cancer: IL-2 and IL-1b demonstrated significant associations with lung cancer risk as well, with odds ratios of 2.16 (95% CI: 1.20–4.91, p = 0.009) and 1.88 (95% CI: 1.09–3.54, p = 0.030), respectively, for patients with levels above 17 pg/mL and 22 pg/mL.