Amiloride in Nephrotic Syndrome

NCT ID: NCT05079789

Last Updated: 2025-01-14

Study Results

Results available

Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.

View full results

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

TERMINATED

Clinical Phase

PHASE3

Total Enrollment

20 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-06-08

Study Completion Date

2022-11-20

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

The AMILOR study compares treatment of edema in nephrotic syndrome with Amiloride vs. Furosemide.

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

The monocenter randomized-controlled AMILOR trial investigates the efficacy of the ENaC blocker amiloride in reducing edema in nephrotic syndrome compared with standard therapy with the loop diuretic furosemide.

Patients with acute nephrotic syndrome are randomized to receive amiloride (starting dose 5 mg) or furosemide (starting dose 40 mg) for 16 days. The target number of patients is n = 18 per arm. Exclusion criteria include GFR \<30ml/min/1.73m², AKIN 1 and 2, hypotension, hyper-/ hypokalemia, and hyponatremia. Overhydration is quantified by bioimpedance spectroscopy. Depending on the course of overhydration, dose adjustments (day 2, 5, 8, 12) or addition of HCT (day 8) are performed during the course of the study.

Primary endpoint is decrease in overhydration at day 8, secondary endpoints include decrease in overhydration at day 16, as well as body weight, edema volume, blood pressure, urine volume, natriuresis at day 8 and 16, and need for dose adjustments and co-medication with HCT. Plasma potassium, sodium, and creatinine concentrations are measured as safety parameters.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Nephrotic Syndrome Edema Sodium Retention

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

Amiloride

Treatment wirh Amiloride, start dose 5 mg

Group Type EXPERIMENTAL

Amiloride

Intervention Type DRUG

Treatment with amiloride, start dose 5 mg

Furosemide

Treatment with Furosemide, start dose 40 mg

Group Type ACTIVE_COMPARATOR

Furosemide

Intervention Type DRUG

Treatment with furosemide, start dose 40 mg

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

Amiloride

Treatment with amiloride, start dose 5 mg

Intervention Type DRUG

Furosemide

Treatment with furosemide, start dose 40 mg

Intervention Type DRUG

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

1. Acute nephrotic syndrome with proteinuria \> 3 g/day and formation of edema.
2. Age ≥ 18 years at the time of signing the informed consent.
3. Understand and voluntarily sign an informed consent document prior to any study related assessments/procedures.
4. Ability to adhere to the study visit schedule and other protocol requirements.
5. Use of adequate thrombosis prophylaxis due to the increased risk of thrombosis in nephrotic syndrome and the expected fluctuations in volume balance during study participation.
6. Subject (male or female) is willing to use highly effective methods of contraception according to the "Clinical trial fertility group" recommendations.
7. Female Patients of childbearing potential (WOCBP) must agree to pregnancy testing before inclusion in the study.
8. Female Patients must agree to abstain from breastfeeding during study participation and 28 days after study drug discontinuation.
9. All subjects must agree not to share medication.

Exclusion Criteria

1. Severe reduction of kidney function: Creatinine clearance or calculated GFR \< 30 mL/min/1.73m² or acute kidney injury KDIGO stage 2 or 3 or anuria.
2. Hypovolemia or dehydration.
3. Uncontrolled diabetes mellitus.
4. Hypotension, systolic blood pressure \< 90 mmHg.
5. Hyperkalemia, plasma potassium concentration \> 4.8 mmol/l.
6. Hypokalemia, plasma potassium concentration \< 3.3 mmol/l.
7. Hyponatremia, plasma sodium concentration \< 128 mmol/l.
8. Hypercalcemia, ionized calcium \> 2.0 mmol/l or total albumin corrected calcium \> 3.0 mmol/l.
9. Signs of cardiac decompensation (orthopnoe, dyspnoe NYHA IV).
10. Hepatic coma or precoma.
11. Symptoms of gout.
12. Current therapy with potassium-sparing diuretics (e.g. spironolactone) or potassium supplements.
13. Women during pregnancy and lactation.
14. History of hypersensitivity to the investigational medicinal product, comparator or co-medication or to any drug with similar chemical structure or to any excipient present in the pharmaceutical form of the investigational medicinal product, comparator or co-medication.
15. Any other clinical condition that would jeopardize the patient's safety while participating in this clinical trial.
16. Active participation in other clinical trials or observation period of competing trials.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

Meet the organizations funding or collaborating on the study and learn about their roles.

University Hospital Tuebingen

OTHER

Sponsor Role lead

Responsible Party

Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.

Dr. Anja Schork

Clinincal Investigator, Project management

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

Learn about the lead researchers overseeing the trial and their institutional affiliations.

Ferruh Artunc, Prof., MD

Role: PRINCIPAL_INVESTIGATOR

University Hospital Tuebingen

Locations

Explore where the study is taking place and check the recruitment status at each participating site.

University Hospital Tuebingen

Tübingen, Baden-Wurttemberg, Germany

Site Status

Countries

Review the countries where the study has at least one active or historical site.

Germany

References

Explore related publications, articles, or registry entries linked to this study.

Artunc F, Worn M, Schork A, Bohnert BN. Proteasuria-The impact of active urinary proteases on sodium retention in nephrotic syndrome. Acta Physiol (Oxf). 2019 Apr;225(4):e13249. doi: 10.1111/apha.13249. Epub 2019 Jan 18.

Reference Type BACKGROUND
PMID: 30597733 (View on PubMed)

Provided Documents

Download supplemental materials such as informed consent forms, study protocols, or participant manuals.

Document Type: Study Protocol

View Document

Document Type: Statistical Analysis Plan

View Document

Related Links

Access external resources that provide additional context or updates about the study.

Other Identifiers

Review additional registry numbers or institutional identifiers associated with this trial.

2019-002607-18

Identifier Type: EUDRACT_NUMBER

Identifier Source: secondary_id

AmiloridNS-01

Identifier Type: -

Identifier Source: org_study_id

More Related Trials

Additional clinical trials that may be relevant based on similarity analysis.

Treatment of Vascular Stiffness in ADPKD
NCT05228574 COMPLETED PHASE4