Fig. 3 showed the results of sensitivity analysis. The combined OR per natural log unit change in CRP ranged from 1.13 (95% CI: 1.05-1.22) to 1.19 (95% CI: 1.09-1.30). The meta-analysis result of the combined OR per natural log unit change in CRP for breast cancer was not significantly affected by omission of any of the 15 individual studies, which meaned that each single study didn’t influence the stability of combined OR estimate. The gene discussed is CRP; the disease is breast cancer.