Participants with T2D received preparations of the ATC groups: C03 (diuretics), C08 (calcium channel blockers) and C09 (preparations acting on the renin-angiotensin system, including ACE inhibitors and angiotensin II receptor blockers), more frequently than non-T2D hypertensive participants (Table 6). The gene discussed is REN; the disease is type 2 diabetes mellitus.