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NCT Number: NCT06794593

Effect Camostat for Kidney Protection in Chronic Kidney Disease

This clinical trial aims to evaluate the effects of Camostat Mesylate, a serine protease inhibitor, in patients with chronic kidney disease (CKD) and proteinuria. Proteinuria accelerates CKD progression and increases cardiovascular risks. By inhibiting serine protease activity and tubular complement activation, camostat may mitigate progressive kidney injury, potentially improving clinical outcomes.

This is an interventional, non-randomized, open-label pharmacodynamic trial that includes CKD patients with proteinuria and healthy controls. This approach has been chosen as the trial serves as a pilot study, aiming to investigate a novel treatment target in CKD patients. Including healthy controls allows a comparison of the effect of Camostat Mesilate on normal physiology versus CKD with proteinuria.

Participants will:

* Follow a standardized sodium diet of 150 mmol/day for 8 days. * Receive oral Camostat Mesilate (200 mg thrice daily) for four days (day 5-8 on the diet). * Provide blood and urine samples, record blood pressure, and undergo body composition measurements at baseline, during intervention, and at study completion.

The primary effect parameters are urine sodium and water excretion, body water content/weight, and home blood pressure. Secondary endpoints are tubular complement activation, urine protease activity, ENaC activation, 24-hour urine albumin excretion, and plasma concentrations of renin, angiotensin II, aldosterone, and NT-proBNP.

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

About this study

Please refer to the protocol.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Patients:

Inclusion criteria

  • Age ≥ 18 years.
  • A clinical diagnosis of CKD of any course and meet the following criteria at screening:
  • eGFR ≥ 30 ml/min/1.73m2
  • U-ACR ≥ 300 mg/g.
  • Stable antihypertensive treatment 2 weeks before start of investigated medical drug (IMP) and maintain this treatment throughout the study.
  • Office blood pressure at the screening session should be >120/70 mmHg and <150/90 mmHg.
  • Capable of providing a signed informed consent and comply with study requirements.
  • Women with childbearing potential must have a negative pregnancy test (urine hCG) at spot urine at the screening visit and should use contraception during the study and until one week after completion of study treatment.

Exclusion criteria

  • Treatment with Amiloride, Spironolactone, Aldosterone, or analogues.
  • Treatment with NSAIDs.
  • Hyperkalemia > 5.0 mmol/L at screening.
  • P-bilirubin > 25 umol/L at screening.
  • Ongoing cancer treatment.
  • Treatment with immunosuppressive therapy within 6 months prior to screening.
  • History of organ transplantation.
  • Evidence of current infection (CRP>50 or temperature > 38 C°).
  • Severe hepatic insufficiency classified as Child-Pugh C.
  • Breastfeeding.
  • Congestive heart failure NYHA class IV, unstable or acute congestive heart failure.
  • Recent cardiovascular events < 2 months prior to screening:
  • Coronary artery revascularization.
  • Acute stroke or TIA.
  • Acute coronary syndrome.
  • Allergy or hypersensitivity to the IMP.
  • Addison's disease.
  • Gastric bypass operation.
  • Lactose intolerance since lactose serves as one of the inactive ingredients in the IMP.
  • Participation in other clinical trials within the last 30 days.

Healthy controls:

Inclusion criteria

  • Age ≥ 18 years.
  • Good general health with no significant medical conditions or chronic illness (e.g., diabetes, hypertension, cardiovascular disease, autoimmune diseases, and cancer).
  • Normal kidney function and no proteinuria at screening:
  • eGFR > 90 ml/min/1.73m2
  • U-ACR < 30 mg/g
  • Office blood pressure at the screening < 140/90 mmHg.
  • Capable of providing a signed informed consent and comply with study requirements.
  • Women with childbearing potential* must have a negative pregnancy test (urine hCG) at spot urine at the screening visit and should use contraception during the study and until one week after completion of study treatment.

Exclusion criteria

  • Treatment with any prescription medication except oral contraceptives.
  • Use of NSAIDs (Non-Steroidal Anti-Inflammatory Drugs)
  • Hyperkalemia > 5.0 mmol/L at screening.
  • P-bilirubin > 25 umol/L at screening.
  • Evidence of current infection (CRP>50 or temperature > 38 C°).
  • Breastfeeding.
  • History of substance abuse including alcohol.
  • Allergy or hypersensitivity to the IMP.
  • Gastric bypass operation.
  • Lactose intolerance since lactose serves as one of the inactive ingredients in the IMP.
  • Participation in other clinical trials within the last 30 days

Treatment and study plan

Camostat Mesylate

Drug

Oral Camostat Mesylate 200 mg x 3 daily for 4 days.

Other names: Foipan

Primary outcomes

  1. 24 h Urine sodium excretion (mmol/day)

    Time frame: At baseline (day 0), before treatment with IMP (day 5), and after completion of 4 days treatment with IMP (day 9).

  2. Water excretion (L)

    Time frame: At baseline (day 0), before treatment with IMP (day 5), and after completion of 4 days treatment with IMP (day 9).

    24 h urine collection

  3. Total Body Water (L)

    Time frame: At baseline (day 0), before treatment with IMP (day 5), and after completion of 4 days treatment with IMP (day 9).

    Measured by Body Composition Monistor

  4. Home blood pressure

    Time frame: At baseline (day 0), before treatment with IMP (day 5), and after completion of 4 days treatment with IMP (day 9).

Secondary outcomes

  1. Urine protease activity: zymography + protease activity

    Time frame: At baseline (day 0), before treatment with IMP (day 5), and after completion of 4 days treatment with IMP (day 9).

  2. Tubular complement activation

    Time frame: At baseline (day 0), before treatment with IMP (day 5), and after completion of 4 days treatment with IMP (day 9).

    Urine C3a, MAC-sC5b-9, C3dg, MBL

  3. Urine microvesicles: gammaENaC cleavage

    Time frame: At baseline (day 0), before treatment with IMP (day 5), and after completion of 4 days treatment with IMP (day 9).

  4. Urine microvesicles: complement deposition

    Time frame: At baseline (day 0), before treatment with IMP (day 5), and after completion of 4 days treatment with IMP (day 9).

  5. 24 hours urine albumin excretion (mg/day)

    Time frame: At baseline (day 0), before treatment with IMP (day 5), and after completion of 4 days treatment with IMP (day 9).

  6. Plasma concentration of renin, NT-proBNP, angiotensin II and aldosterone

    Time frame: At baseline (day 0), before treatment with IMP (day 5), and after completion of 4 days treatment with IMP (day 9).

Study contacts

Contact information is provided by the study sponsor or research team.

Claus Bistrup, MD, Professor

CONTACT

[email protected]

+4523368077

Mette B. Boes, MD

CONTACT

[email protected]

+4522919808

Sponsors and collaborators

Lead sponsor

Odense University Hospital

Other

Registry information

Acronym: CamKid

Important dates

Study start
2024
Primary completion
2025
Study completion
2027
First posted
Jan 27, 2025
Registry last updated
Jan 27, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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