EIF4G1 and non-small cell lung carcinoma: In the present study, we found that the mRNA and protein expression levels of EIF4G1 were upregulated in NSCLC tissues, as determined by RT‐PCR and immunohistochemistry analysis, and the expression levels of EIF4G1 were closely related to the differentiation of tumour cells; the higher the expression of EIF4G1 was, the poorer differentiated the tumour was.