Association between serum vitamin D levels and gastric cancer:A retrospective chart analysis

AIM To determine whether there is an increased risk of gastric adenocarcinoma associated with vitamin D deficiency(VDd).METHODS A retrospective case control study was performed of all patients diagnosed with gastric adenocarcinoma between 2005 and 2015.After we excluded the patients without a documented vitamin D level,49 patients were included in our study.RESULTS The average age of patients with gastric adenocarcinoma and documented vitamin D level was 64 years old(95%CI: 27-86) and average vitamin D level was 20.8 mg/d L(95%CI: 4-44).Compared to a matched control group,the prevalence of VDd/insufficiency in patients with gastric adenocarcinoma was significantly higher than normal vitamin D levels(83.7% vs 16.3%).Forty-one patients(83.7%) with adenocarcinoma showed VDd/insufficiency compared to 18(37%) patients with normal vitamin D level without gastric cancer(OR: 8.8,95%CI: 5-22,P value < 0.0001).The average age of males with gastric adenocarcinoma diagnosis was 60 years old vs 68 years old for females(P = 0.01).StageⅡ gastric adenocarcinoma was the most prevalent in our study(37%).CONCLUSION We reported a positive relationship between VDd and gastric adenocarcinoma,that is to say,patients with decreased VDd levels have an increased propensity for gastric adenocarcinoma.