AIM:To investigate the association between single nu-cleotide polymorphisms (SNPs) in intercellular adhesion molecule-1 (ICAM-1) and the risk,biological behavior and prognosis of gastric cancer (GC) in Chinese population.METHODS:The study group consisted of 332 GC patients and 380 healthy controls.Genotyping was performed using polymerase chain reaction and the results were confirmed by sequencing.The associa-tion of ICAM-1 K469E polymorphisms and the risk of GC were studied,and the correlation of ICAM-1 K469E polymorphisms with the clinicopathological parameters and prognosis of the patients with complete clinical and follow-up data was analyzed.RESULTS:Carriers of AA genotype had a significantly increased risk of GC compared with carriers of AG and GG genotypes [odds ratios:1.36;95% confidence in-terval (CI):1.01-1.84;P=0.041].GC patients with AA genotype were more prone to distant metastasis than those carrying AG and GG genotypes (18.9% vs 7.0%,respectively;P=0.002).In addition,patients at stage Ⅳ had significantly more carriers of AA genotype than those of AG and GG genotype (27.4% vs 16.9%,re-spectively;P=0.046).Follow-up study showed that the overall cumulative survival rate was 23.7% in AA geno-type group and 42.9% in AG and GG genotypes group.In univariate analysis,AA genotype was correlated with the overall cumulative survival (P=0.034).But in multi-variate analysis,ICAM-1 polymorphism was not an inde-pendent prognostic factor for the overall survival (relative risk,1.145;95% CI:0.851-1.540;P=0.370).CONCLUSION:Polymorphisms of ICAM-1 K469E can be a useful biomarker for identifying individuals with higher risk of GC,predicting disease progression,and guiding individualized treatment. AIM: To investigate the association between single nu-cleotide polymorphisms (SNPs) in intercellular adhesion molecule-1 (ICAM-1) and the risk, biological behavior and prognosis of gastric cancer (GC) in Chinese population.METHODS: The study group consisted Of 332 GC patients and 380 healthy controls. Genotyping was performed using polymerase chain reaction and the results were confirmed by sequencing. The association of ICAM-1 K469E polymorphisms and the risk of GC were studied, and the correlation of ICAM-1 K469E Polymorphisms with the clinicopathological parameters and prognosis of the patients with complete clinical and follow-up data was analyzed.RESULTS: Carriers of AA genotype had a significantly increased risk of GC compared with carriers of AG and GG genotypes [odds ratios: 1.36; 95% Consensus in-terval (CI): 1.01-1.84; P=0.041].GC patients with AA genotype were more prone to distant metastasis than those carrying AG and GG genotypes (18.9% vs 7.0%,respectively; P=0.002).In Addition,pat Ients at stage IV had significantly more carriers of AA genotype than those of AG and GG genotype (27.4% vs 16.9%,re-spectively;P=0.046).Follow-up was study showed that the overall survival survival rate was 23.7% in AA Geno-type group and 42.9% in AG and GG genotypes group.In univariate analysis,AA genotype was correlated with the overall cumulative survival (P=0.034).But in multi-variate analysis,ICAM-1 polymorphism was not an inde-pendent Prognostic factor for the overall survival (relative risk, 1.145; 95% CI: 0.851-1.540; P=0.370). CONCLUSION: Polymorphisms of ICAM-1 K469E can be a useful biomarker for identifying individuals with higher risk of GC, predicting disease progression ,and navigate individualized treatment.