GCKR and type 2 diabetes mellitus: Using Bonferroni‐corrected p‐value ≤ 3.5 × 10−3 as the significance threshold after correction for multiple testing, genetically predicted higher levels of circulating GCKR were associated with the increased risk of T2DM (OR = 2.183, 95% CI = 1.846–2.581, p = 6.53 × 10−20).