Blood pressure and glycaemic effects of dapagliflozin versus placebo in patients with type 2 diabetes on combination antihypertensive therapy: a randomised, double-blind, placebo-controlled, phase 3 study
Abstract
BACKGROUND: Hypertension is a common comorbidity in patients with type 2 diabetes mellitus and a major risk factor for microvascular and macrovascular disease. Although the blood pressure-lowering effects of sodium-glucose cotransporter 2 (SGLT2) inhibitors are already established, guidance is needed on how to use these drugs in patients already receiving antihypertensive therapy. We aimed to compare blood pressure and glycaemic effects of the SGLT2 inhibitor dapagliflozin with placebo in patients with inadequately controlled type 2 diabetes mellitus and hypertension.
METHODS: In this double-blind, placebo-controlled, phase 3 study we enrolled patients from 311 centres in 16 countries across five continents. Patients had uncontrolled type 2 diabetes (HbA1c 7·0%-10·5%; 53-91 mmol/mol) and hypertension (systolic 140-165 mm Hg and diastolic 85-105 mm Hg at both enrolment and randomisation, and a mean 24 h blood pressure of ≥130/80 mm Hg by ambulatory monitoring within 1 week of randomisation) and were receiving oral antihyperglycaemic drugs, insulin, or both, plus a renin-angiotensin system blocker and an additional antihypertensive drug. Using an interactive voice-response system, we randomly assigned (1:1) patients to dapagliflozin 10 mg once a day or to placebo, with randomisation stratified by additional antihypertensive drug use and insulin use at baseline, in a block size of two. The co-primary endpoints were changes in seated systolic blood pressure and HbA1c measured in…
How strong is the evidence?
Evidence Hub reads this as a randomized trial, done in people. Its evidence level is 2 of 5 (High · randomized trial). Randomized trials of a reasonable size are the strongest single-study design. Reported size: 225 participants or records.
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