More individuals in the fourth CRP quartile had AF than in the first quartile (7.4% vs. 3.7%, adjusted odds ratio (OR) 1.8, 95% confidence interval (CI) 1.2 to 2.5; p = 0.002) and baseline CRP level predicted the risk for developing future AF (fourth vs. first quartile adjusted hazard ratio 1.31, 95% CI 1.08 to 1.58; p = 0.005), indicating that CRP is not only associated with the presence of AF, but also predicts patients at increased risk for future development of AF [10]. This evidence concerns the gene CRP and atrial fibrillation.