HAVCR1 and diabetic kidney disease: KIM-1 is one of the most-studied markers, with research including a nested case–control study (n = 190 cases of incident DKD and 190 matched controls) and a prospective cohort study (n = 1156) that used banked baseline plasma samples from participants in randomized controlled trials of early (ACCORD) and advanced (VA NEPHRON-D) DKD [59].