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Flow diagram of the specimen included in the study. NSCLC, non‐small cell lung cancer; ICI, immune checkpoint inhibitor; NGS, next‐generation sequencing; FFPE, formalin‐fixed paraffin‐embedded; IHC, immunohistochemistry; pSHP2, phospho‐SHP2; PD‐L1, programmed death ligand 1; PFS, progression‐free survival; OS, overall survival; mIFC, multiplexed immunofluorescence cytochemistry
