With reference to individuals with PRL levels of 5-34.9 ng/ml (event rate = 6.3%), the adjusted risk of developing type 2 diabetes increased progressively in those with PRL levels of 3-4.9 ng/ml: event rate = 9.3%, OR (95% CI) 1.59 (0.93–2.71), and more so with PRL levels of 0.3–2.9 ng/ml: event rate = 22.7%, OR 5.45 (1.78–16.62). The gene discussed is PRL; the disease is type 2 diabetes mellitus.