For the iMPQAT analysis, we retrospectively collected frozen samples of the tumors from 36 patients with lung adenocarcinoma (n = 12), squamous cell carcinoma (n = 12) and LD-SCLC[TG1] (n = 12) who had undergone surgical resection at Kyushu University Hospital between January 2012 and July 2018. Among 12 patients with SCLC, frozen samples of the normal lung tissue were available in 6 patients.