CRP and gastric cancer: C-reactive protein (CRP), the neutrophil-to-lymphocyte ratio (NLR), the platelet-to-lymphocyte ratio (PLR), the Glasgow prognostic score (GPS), and the systemic immune-inflammation index (SII) are associated with clinical outcomes and may be promising prognostic indicators among patients with GC [8,9,10,11,12,13,14].