ACAA2 and lung adenocarcinoma: SCLC exhibited significantly elevated ACAA2 mRNA expressions when compared to lung adenocarcinoma [P = 2.52*10-5 (left panel); 7.2*10-7 (right panel)] and normal lung tissues (P = 2.2*10-4), which further suggests a positive correlation between ACAA2 expression and SCNCs (Fig. 4d).