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FimAsartaN proTeinuriA SusTaIned reduCtion in comparison with losartan in diabetic chronic kidney disease
Jang-Young Kim1, Jung-Woo Son1, Sungha Park2
1Division of Cardiology, Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea.
Insights
This clinical trial investigates fimasartan's reno-protective effects in hypertensive diabetic chronic kidney disease (CKD) patients. It compares fimasartan to losartan, evaluating proteinuria changes and cardiovascular/renal outcomes under different blood pressure targets.
Area of Science:
- Nephrology
- Cardiology
- Pharmacology
Background:
- Fimasartan, a novel angiotensin receptor blocker, has not been assessed for reno-protective effects in hypertensive diabetic chronic kidney disease (CKD).
- Optimal blood pressure (BP) targets for managing hypertensive diabetic CKD remain debated.
- This study addresses the need to evaluate fimasartan's efficacy and optimal BP control in this patient population.
Purpose of the Study:
- To assess the reno-protective effects of fimasartan compared to losartan in patients with hypertensive diabetic CKD and proteinuria.
- To compare cardiovascular and renal outcomes between strict (SBP < 130 mmHg) and standard (SBP < 140 mmHg) systolic blood pressure control groups.
- To determine the optimal target BP for reducing adverse outcomes in this specific patient group.
Main Methods:
- A prospective, phase III, randomized, double-blind, active-controlled, multicenter trial involving patients with hypertensive diabetic CKD and overt proteinuria.
- Four parallel groups: fimasartan or losartan with either standard or strict systolic blood pressure (SBP) control.
- Primary endpoint: change in proteinuria (urine albumin-creatinine ratio) at 24 weeks; secondary endpoints: cardiovascular and renal outcomes at 144 weeks.
Main Results:
- The study is designed to provide data on the primary endpoint of proteinuria change at 24 weeks.
- Secondary endpoints will assess cardiovascular and renal outcomes at 144 weeks.
- The comparison between strict and standard SBP control groups will be analyzed.
Conclusions:
- The FANTASTIC clinical study aims to elucidate the reno-protective potential of fimasartan.
- It will provide evidence regarding the optimal target blood pressure for managing hypertensive diabetic CKD with proteinuria.
- Findings will inform clinical practice for this vulnerable patient population.
Background:
Fimasartan is the ninth angiotensin receptor blocker to be developed. However, it has not yet been evaluated for reno-protective effects in hypertensive diabetic chronic kidney disease (CKD). The target blood pressure (BP) for hypertensive diabetic CKD is also a controversial topic. This trial was designed to assess the reno-protective effects of fimasartan compared to those of losartan as a primary outcome. This study also compares the two drugs with regard to cardiovascular and renal outcomes in accordance with target systolic BP (SBP) (as secondary outcomes).
Methods:
This study is a prospective, phase III, randomized, double-blind, active-controlled, non-inferiority, four-parallel group, dose-titration, multicenter trial. We recruit patients with hypertensive diabetic CKD with overt proteinuria. Participants will be randomized into four groups (1:1:1:1): fimasartan standard SBP control (SBP < 140 mmHg); fimasartan strict SBP control (SBP < 130 mmHg); losartan standard SBP control; and losartan strict SBP control. After 24 weeks, all individuals are treated with fimasartan for an additional 120 weeks in an open-label design, maintaining their assigned SBP control groups as randomized. The primary endpoint is the rate of change in proteinuria, which is assessed using the spot urine albumin-creatinine ratio at 24 weeks. The secondary endpoints are the cardiovascular and renal outcomes at 144 weeks compared between the strict SBP and standard SBP control groups.
Discussion:
The FANTASTIC is a clinical study to provide: (1) the reno-protective effect of fimasartan; and (2) the target BP to reduce adverse outcomes in hypertensive diabetic CKD with overt proteinuria.
Trial Registration:
Clinicaltrials.gov, NCT02620306. Registered on 1 December 2015.
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