KRAS and small cell lung carcinoma: To assess this hypothesis, we first analyzed the cell line Colo668, a small cell lung carcinoma cell line derived from a brain metastatic site, which has the same pair of KRAS-G12V with HLA-A*11:01 as ID 172, to determine whether the same neoantigen, KRAS-G12V [p. 7–16], would be identified with reproducibility by a global-immunopeptidomics approach.