Prognostic Value of KRAS Mutation Subtypes and PD-L1 Expression in Patients With Lung Adenocarcinoma.

KRAS mutation subtype is not associated with patient clinical outcomes or PD-L1 expression status. However, PD-L1 positivity appears to negatively affect OS in LADC patients with G12C mutation. Further study is needed to confirm our observation and to determine if programmed cell death 1/PD-L1 antagonist may affect the clinical outcome of patients with different KRAS mutation subtypes.