However, in a prospective study in China, a country with the largest diabetic population in the world, an almost twofold increased risk of type 2 diabetes was observed among middle aged and elderly persons in the highest quintile of ferritin level compared with those in lowest after adjusting for known risk factors including high sensitivity C reactive protein (hsCRP), BMI, γ-glutamyl transferase (GGT), and adiponectin (Sun et al., 2013). The gene discussed is ADIPOQ; the disease is type 2 diabetes mellitus.