Subsequent OSNA measurements (#2) revealed a statistically significant decrease in the CK-19 mRNA level after removal of the primary tumour with regional LNs (D2 gastrectomy) (1 vs. 2; medians (95%CI): 4.6 (1.1–18.5) vs. 0.00004 [0–0.2) cCP/μL; p = 0.0012). This evidence concerns the gene KRT19 and neoplasm.