Clinicopathological and prognostic significance of interleukin-8 expression and its relationship to KRAS mutation in lung adenocarcinoma.

IL-8 expression was significantly higher in tumours from patients who were ⩾70 years old than in those from patients who were <70 years old ( P =0.008) and was higher in tumours from smokers than in those from non-smokers with borderline significance ( P =0.075), whereas there were no significant differences in IL-8 expression on the basis of gender or pathological stage ( Figure 1A ).

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P <0.05 was considered significant and 0.1> P ⩾0.05 was considered borderline significant.

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