Considering the histological parameters of Sydney System score [22], PCNA transcript gene level showed a correlation only with the grade of inflammatory chronicity in AG/IM GC- (Spearman test r = 0.56, p < 0.01) but no significant correlations were found in the analysis with the other groups or with the grade of inflammatory activity (Spearman test p > 0.05). Here, PCNA is linked to gastric cancer.