Effect of Empagliflozin on the Renin-angiotensin System in Patients With Chronic
试验速览
- 阶段
- 2 期
- 状态
- 已完成
- 入组人数
- 51
- 试验地点
- 1
- 主要终点
- The difference of Ang 1-7 increase from baseline between a 3-month treatment with empagliflozin on top of ACEi treatment compared to ACEi treatment alone
研究概览
简要总结
This study will be a prospective, clinical pilot study in CKD patients to show whether Empagliflozin in addition to ACEi treatment significantly increases Ang 1-7 levels compared to ACEi treatment alone.
Null and alternative hypotheses:
H0: Empagliflozin in addition to ACEi treatment does not increase Ang 1-7 levels more than ACEi treatment alone.
H1: Empagliflozin in addition to ACEi treatment significantly increases Ang 1-7 levels compared to ACEi treatment alone
Methodology:
Two groups of 24 chronic kidney disease (CKD) patients, respectively, with and without type 2 diabetes will be randomized into the study medication or placebo group. The number of patients per treatment arms is n = 12. Included and consented patients will be subjected to an initial 2-week run-in period for conversion of current RAS blocking medications to ACEi therapy with enalapril or ramipril and respective dose titration to 10 mg enalapril 2 x daily and 10 mg ramipril 1 x daily. Additional antihypertensive medication will be standardized as feasible, with the primary goal of keeping blood pressure as recommended by KDIGO. Following the 2-week run-in phase, all study patients will be subjected to blood collection including the first RAS quantification (RAS Fingerprint) and assessment of HDL composition, as well as urinary analysis and bioimpedance fluid status assessment (BCM measurement). Subsequently, patients will be randomized to either receive empagliflozin (at a dose of 10 mg daily) or placebo. Subsequently, biweekly study visits including electrolyte and glucose (plasma and urine) monitoring as well as BCM measurement will take place. After 12 weeks of study medication intake, a concluding study visit will be scheduled for final RAS quantification (RAS Fingerprint) and HDL analyses as well as final blood and urinary analysis and BCM measurement. Initially, blood and urine will be collected at the clinical visit as part of the routine blood obtainment (no additional effort on patients). From these routine measurements we will be able to extract information regarding the patient's current CKD stage as well as other relevant laboratory parameters (e.g. HbA1c, UACR, etc.). Furthermore, we will document the patient's current medication and significant comorbidities.
Primary analysis variable/endpoint:
The difference of Ang 1-7 increase from baseline between a 3-month treatment with empagliflozin on top of ACEi treatment compared to ACEi treatment alone
Most important secondary analysis variables/endpoints:
- Simultaneous quantitative changes of multiple RAS effector angiotensin levels determined by mass-spectrometry
- Recurrence of Ang II levels determined by mass-spectrometry
- HDL parameters (protein composition of HDL)
- Renal parameters (albuminuria reduction measured by urinary albumin-creatinine ratio (UACR), renal function (estimated glomerular filtration rate (GFR), serum-creatinine)
- Urinary electrolyte levels
- Urinary glucose levels
- Urinary RAS metabolites (angiotensinogen, ACE and ACE2 levels, ACE2 activity)
- Blood pressure determined by ambulatory blood pressure measurements
- Body volume determined by bioimpedance fluid status assessment (BCM measurement)
- OCR and ECAR in PBMCs determined by Seahorse Flux Analyzer
- Assessment of reduction of salt sensitivity by using salt sensitivity test with empagliflozin
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Triple (Participant, Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •for CKD patients with type 2 diabetes
- •Estimated GFR (calculated with the MDRD-IDMS formula) between 15 and 59 ml/min (with CKD stage IIIa/b to IV)
- •Albumin excretion rates of 30-300 mg/24 hours (UACR <300 mg/g)
- •Fasting plasma glucose levels >126 mg/dl [7mmol/L] or HbA1c levels >6.5% (Definition of type 2 diabetes according to the diagnostic criteria set forth by the American Diabetes Association in 2009)
- •for CKD patients without Diabetes
- •Estimated GFR (calculated with the MDRD-IDMS formula) between 15 and 59 ml/min (with CKD stage IIIa/b to IV)
- •Albumin excretion rates of 30-300 mg/24 hours (UACR <300 mg/g)
排除标准
- •CKD patients with type 2 diabetes
- •Age <18 years
- •Severely impaired renal function (eGFR <15ml/min)
- •Hyperkalemia above 4.5mmol/L
- •Hypotension (systolic blood pressure lower than 120 mmHg on ambulatory measurement)
- •Pregnant patients
- •Patients planning pregnancy
- •Body mass index < 18.5 kg/m2
- •for CKD patients without diabetes
- •Age <18 years
- •Diabetic kidney disease
- •Severely impaired renal function (eGFR <15ml/min)
- •Hypotension (systolic blood pressure lower than 120 mmHg on ambulatory measurement)
- •Pregnant patients
- •Patients planning pregnancy
- •Body mass index < 18.5 kg/m2 -
研究组 & 干预措施
Group A
Diabetic CKD patients receiving Empagliflozin 10 MG [Jardiance]
干预措施: Empagliflozin 10 MG [Jardiance] (Drug)
Group B
Diabetic CKD patients receiving Placebo Oral Tablet
干预措施: Placebo Oral Tablet (Drug)
Group C
Non-diabetic CKD patients receiving Empagliflozin 10 MG [Jardiance]
干预措施: Empagliflozin 10 MG [Jardiance] (Drug)
Group D
Non-diabetic CKD patients receiving 'Placebo Oral Tablet
干预措施: Placebo Oral Tablet (Drug)
结局指标
主要结局
The difference of Ang 1-7 increase from baseline between a 3-month treatment with empagliflozin on top of ACEi treatment compared to ACEi treatment alone
时间窗: Visit 2 and Visit 8; 3 months
The difference of Ang 1-7 increase from baseline between a 3-month treatment with empagliflozin on top of ACEi treatment compared to ACEi treatment alone
次要结局
- Mean changes of baseline Ang II levels after 3 months of empagaliflozin treatment(Visit 2 and Visit 8; : 3 months)
- Mean quantitative changes of baseline multiple RAS effector angiotensin levels after 3 months of empagaliflozin treatment(Visit 2 and Visit 8; 3 months)
- Mean changes from baseline relevant blood parameters (HbA1c, β-hydroxybutyrat, elektrolytes, lipids, etc.) after 3 months of empagaliflozin treatment(Visit 2 ,3,4,5,6,7,8; 3 months)
- Mean changes in body fluid status after 3 months of empagaliflozin treatment(Visit 2 and Visit 8; 3 months)
- Mean changes of baseline specific protein amount on HDL after 3 months of empagaliflozin treatment(Visit 2 and Visit 8; 3 months)
- Mean changes from baseline urinary RAS metabolites (angiotensinogen, ACE and ACE2 levels, ACE2 activity) after 3 months of empagaliflozin treatment(Visit 2 and Visit 8; 3 months)
- Mean changes in baseline oxygen consumption rate (OCR) and the extracellular acidification rate (ECAR) in peripheral peripheral blood mononuclear cells (PBMCs) after 3 months of empagliflozin treatment(Visit 2 and Visit 8; 3 months)
- Mean changes in salt sensitivity after 3 months of empagliflozin treatment(Visit 2 and Visit 8; 3 months)
- Mean changes in specific renal parameters from baseline in 3 months of empagaliflozin treatment (albuminuria reduction, renal function)(Visit 2 ,3,4,5,6,7,8; 3 months)
- Mean changes in baseline blood pressure after 3 months of empagaliflozin treatment(Visit 2 ,3,4,5,6,7,8; 3 months)
研究者
Assoc. Prof. Dr. Manfred Hecking, MD PhD
Assoc. Prof. PD. Dr.med.
Medical University of Vienna