KCNN4 was found altered in nearly all lung carcinoma datasets, namely in Bhattacharjee dataset (p = 1 × 10−6), Stearman dataset (p = 3 × 10−7), Hou dataset (p = 3 × 10−9), Okayama dataset (p = 1 × 10−8), Selamat dataset (p = 2 × 10−14), Landi dataset (p = 2 × 10−17) and in Su dataset (p = 6 × 10−8) with an average 3.6-fold increase vs ctrls;. The gene discussed is KCNN4; the disease is lung carcinoma.