CCR7 and neoplasm: The expression level of CCR7 mRNA in tumor tissue was higher in female patients compared to the male group (median RQ: 13.548 and 10.796, respectively), as well as in patients aged ≤65 compared to those aged >65 (median RQ: 12.954 and 10.634, respectively), but no statistically significant differences were observed (p > 0.05, Mann-Whitney U-test) (Table 2).