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Letter to the Editor
Copyright ©The Author(s) 2025.
World J Clin Oncol. Sep 24, 2025; 16(9): 109717
Published online Sep 24, 2025. doi: 10.5306/wjco.v16.i9.109717
Table 1 Diagnostic and prognostic value of cytokines in gastric cancer
Cytokine
Change in GC vs control
Diagnostic performance
Therapeutic/prognostic notes

Ref.
IL-1βIncreased in GCAUC = 0.7; sensitivity approximately 0.76, specificity approximately 0.43Central in Helicobacter pylori-driven inflammation; blocking IL-1β (e.g., canakinumab) is feasible; associated with tumor invasiveness and poor prognosisRen et al[1], Sánchez-Zauco et al[5]
IL-6Increased in GCAUC = 0.72; meta analysis: Sensitivity 0.80, specificity 0.86, AUC = 0.90Potent growth and survival factor via Janus kinase/signal transducer and activator of transcription 3; high IL-6 predicts worse survival and chemoresistanceRen et al[1], Kai et al[9], Janiczek-Polewska et al[10], Wang et al[12], Laurino et al[14]
IL-8Increased in GCAUC = 0.78; evidence mixed (some studies report no difference)Promotes angiogenesis/metastasis; IL-8/CXC chemokine receptor 1 and 2 inhibitors reverse platinum resistance in preclinical GC models; rising IL-8 after treatment predicts chemoresistanceRen et al[1], Liu et al[13], Jiang et al[15], Limpakan Yamada et al[16]
IFN-γIncreased in GCAUC = 0.65 (below 0.7)Key T-cell cytokine; might reflect immune activation rather than tumor presence; Sánchez-Zauco et al[5] found it up in early GC; role in immunotherapy contextsRen et al[1], Sánchez-Zauco et al[5]
Multi-cytokine panel (IL-1β + IL-6 + IFN-γ)Increased in GCAUC = 0.888Best diagnostic performance; synergistic detectionRen et al[1]
Table 2 Selected inflammation-related biomarkers in gastric cancer
Biomarker
Function (immune role)
Diagnostic (AUC, sens/spec)
Stage association
Therapy relevance
Ref.
IL-1βPro-inflammatory, fever response; promotes tumor inflammationAUC > 0.7 for GCIncreased with higher T/N stageNot specificRen et al[1], Sánchez-Zauco et al[5]
IL-6Pro-inflammatory, growth factor; STAT3 activatorAUC > 0.7; specificity approximately 97%, sensitivity approximately 39%Increased with T/N stage; Increased in metastasisDrives cisplatin resistance; targetable by anti-IL-6R therapyRen et al[1], Sánchez-Zauco et al[5], Wang et al[12], Thong-Ngam et al[21]
IL-8 (CXCL8)Chemokine, neutrophil attractant; angiogenesisAUC > 0.7Likely increased in advanced/invasive GC (Helicobacter pylori linked)Promotes metastasis; CXC chemokine receptor 1 and 2 inhibitors in trialsRen et al[1]
IFN-γTh1 cytokine, anti-tumor effectorIncreased in GCData limitedReflects T-cell response; immunotherapy markerRen et al[1], Sánchez-Zauco et al[5]
IL-10Anti-inflammatory, immunosuppressive (Tregs)Low diagnostic yield aloneIncreased in advanced disease, poor prognosisImmunosuppressive tumor microenvironment; high IL-10 may predict poor ICI responseSzaflarska et al[19]
IL-11IL-6 family, gp130/STAT3 activator (epithelial mitogen)Not established for screeningIncreased tumor/mucosal expression with stageMediates chemoresistance; anti-IL-11Rα agents under studyNecula et al[20]
IL-18IFN-γ–inducer, Th1 cytokineSensitivity approximately 52.2%, specificity approximately 83.3% at 40 pg/mLLikely increased with tumor burdenMay potentiate immunotherapy via IFN-γ; possible adjuvant targetThong-Ngam et al[21]
IL-24 (melanoma differentiation-associated gene-7)Tumor-suppressor cytokine, induces cancer apoptosisInvestigationalDeclined in tumors (anti-tumor effects)Gene therapy for radiosensitization (preclinical)Mao et al[22]
MIG (CXCL9)T-cell chemoattractant (IFN-inducible)Not used diagnosticallyIncreased in advanced GCMay predict T-cell infiltration; synergizes with checkpoint blockadeBaj-Krzyworzeka et al[23]
Macrophage inflammatory protein-1β (C-C motif ligands 4)Monocyte/T-cell chemoattractantNot used diagnosticallyIncreased in GC vs control (stage-independent)May reflect myeloid infiltrationBaj-Krzyworzeka et al[23]
SIL-2Rα (CD25)Marker of T-cell activation/regulationMeasured as immune activation index Increased in advanced disease (likely)Elevated by Tregs; may guide IL-2 or ICI therapyMuhammad et al[25], Nakata et al[26], Park et al[28]
IL-6 rs1800796 (gene)Promoter SNP (G/C) affecting IL-6 LevelsNot diagnosticNot staging, but risk factorHigh-risk allele may inform surveillanceWang et al[29], Wang et al[27]
IL-8 rs4073 (gene)Promoter SNP (T/A) affecting IL-8 LevelsNot diagnosticRisk variant in AsiansCarriers may benefit from chemokine-targeted approachesWang et al[29]