In this study, human H838 lung cancer cells were tranfected with pCI‐COX7A1 to induce COX7A1 overexpression, and western blot results showed that the expression level of COX7A1 in the Overexpression group was much higher (about 8‐fold) than the Control group (Figure 1A). This evidence concerns the gene COX7A1 and lung carcinoma.