FURIN and diabetes mellitus: Additional analysis in the same Chinese cohort as the former study found that log-transformed serum furin levels were similarly inversely associated with fasting glucose levels and risk of prediabetes and diabetes, and when divided into quartiles of furin concentration, those in the lowest quartile were at higher risk compared to those in the highest quartile (prediabetes: OR = 1.42, 95% CI = 1.05–1.92, p = 0.023; diabetes: OR = 1.80, 95% CI = 1.13–2.91, p = 0.015) [57].