ClinicalTrials.gg
Status unknownNCT01624064CKDuUpdated Jun 20, 2012

Renal Effects of an Angiotensin Converting Enzyme Inhibitor in Adults With Chronic Kidney Disease of Uncertain Aetiology

A Phase 1/2 interventional study of Enalapril and Calcium Supplement in Renal Insufficiency, Chronic, sponsored by Ministry of Health, Sri Lanka. Status unknown at 1 site in Sri Lanka. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2012-06-20.

Sponsored by Ministry of Health, Sri Lanka · Phase 1/2, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Jun 2012), so the status shown — last known as Not yet recruiting — may be out of date.

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Phase
Phase 1/2
Study type
Interventional
Enrollment
200
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Study summary

Enalapril would significantly reduce progression of renal disease in patients with Chronic Kidney Disease of Uncertain aetiology.

Read the detailed description

End Stage Kidney Disease (ESKD) results in reduced life expectancy, quality of life and increased consumption of health care resources. Chronic Kidney Disease of Uncertain aetiology (CKDu) is being increasingly recognized in the North Central Region of Sri Lanka and in certain regions over 25% (unpublished data) of general population is suspected as suffering from CKDu. The number of patients who reach ESKD that requires hemodialysis or transplantation is increasing, highlighting the need to find strategies that slow progression of kidney disease. The need for these strategies is even more critical in Sri Lanka where dialysis in not a preferred treatment option. Treatment strategies should be readily accessible and cheap.

The importance of proteinuria as a significant risk factor for ESKD is well recognized, and treatment that is targeted at reducing proteinuria has been shown to reduce progression of renal disease. The Renin - Angiotensin - Aldosterone - System (RAAS) is directly involved in the regulation of blood pressure, fluid volume, and vascular response to injury and inflammation. The inappropriate activation of this system causes hypertension, fluid retention, and inflammatory, thrombotic, and atherogenic effects that may contribute to end-organ damage in the long term. Angiotensin II mediates hemodynamic effects as well as inflammation and fibrosis in the kidney, heart, and vasculature.

Numerous clinical trials have established that interruption of the RAAS cascade with angiotensin-converting enzyme inhibitors (ACEI) or angiotensin receptor blockers (ARB) is beneficial in slowing progression of renal disease. Reduction of BP lowers proteinuria, but the use of an ACEI or an ARB reduces both proteinuria and the rate of deterioration of renal function beyond those seen with equivalent BP reduction from conventional antihypertensive agents. However, the use of these agents has limitations, with significant numbers of treated patients still demonstrating progressive renal disease. RAAS blockers have been shown to blunt the progression of advanced kidney disease. However the long-term renal effect of these agents in early renal disease is not well demonstrated. In fact the trials which showed benefits with RAAS blockers did show in glomerular disease and evidence is not so strong in tubulo-interstitial disease. The benefits of RAS inhibition seem to depend on the degree of proteinuria at baseline. It is marginal in those with low grade proteinuria.

In most forms of proteinuric chronic renal disease, glomerular filtration rate continues to decline even when the initial insult has been removed. The cause of CKDu is still unknown. CKDu is a tubulo-interstitial disease with low grade proteinuria. We believe that the place of ACEI for secondary prevention of CKDu progression needs investigation

02

Conditions studied

  • Renal Insufficiency, Chronic

Keywords

  • Renal Insufficiency, Chronic
  • Uncertain aetiology
  • ACEI
03

In context

Renal Insufficiency, Chronic

3,094 studies on the registry are indexed under Renal Insufficiency, Chronic; 701 are open to participants now.

This study's planned enrollment of 200 is above the median of 73 across 2,161 interventional studies indexed under Renal Insufficiency, Chronic.

Browse Renal Insufficiency, Chronic studies →

Lead sponsor

Ministry of Health, Sri Lanka is the lead sponsor of 4 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Males and females between 18-70 years of age
  • CKDu Grade 1, 2, 3
  • No for treatment with ACEI
  • given

Exclusion criteria

Exclusion Criteria:

  • Grade 4 CKDu
  • Other chronic diseases
  • Evidence or suspicion of non renal secondary hypertension
  • Diabetes type 1 or 2
  • Evidence or suspicion of renovascular disease, obstructive uropathy, or other renal disease
  • Treatment with , non-steroidal anti-inflammatory drugs, or immune-suppressive drugs
  • Acute myocardial infarction or cerebrovascular accident in the previous 6 months
  • Severe uncontrolled hypertension (diastolic blood pressure ≥115 and/or systolic blood pressure ≥220 mm Hg)
  • Suspicion or evidence of connective tissue disease, cancer, higher serum aminotransferase concentrations
  • Chronic cough; drug or alcohol abuse; pregnancy and breast feeding
  • Unwillingness to sign
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

Informed consent

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You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
200 participants (estimated)

Study arms

  • Active comparator
    Enalapril, Proteinuria < 1g/day

    Drug: Enalapril

  • Placebo comparator
    Calcium, Proteinuria < 1g/day

    Drug: Calcium Supplement

  • Active comparator
    Enalapril, Proteinuria > 1g/day

    Drug: Enalapril

  • Placebo comparator
    Calcium, Proteinuria > 1g/day

    Drug: Calcium Supplement

Interventions

  • 2.5-20 mg/day

    Also known as: Angiotensin Converting Enzyme Inhibitor

  • DrugCalcium Supplement

    Calcium 2.5-20 mg/day

    Also known as: Calcium lactate

06

What researchers measure

Primary outcomes

  1. Proteinuria

    Numerous clinical trials have established that angiotensin-converting enzyme inhibitors (ACEI) are beneficial in slowing progression of renal disease. However the long-term renal effect of these agents in early renal disease is not well demonstrated. In fact the trials which showed benefits with ACEI did show in glomerular disease and evidence is not so strong in tubulo-interstitial disease.

    Time frame: One year

  2. Estimated GFR

    In most forms of proteinuric chronic renal disease, glomerular filtration rate continues to decline even when the initial insult has been removed. The cause of CKDu is still unknown. CKDu is a tubulo-interstitial disease with low grade proteinuria. We believe that the place of ACEI for secondary prevention of CKDu progression needs investigation.

    Time frame: One year

Secondary outcomes

  1. All cause mortality

    Time frame: One year

  2. Cardiovascular mortality

    Time frame: One year

07

Study locations

1 site
  • General (Teaching) Hospital, Anuradhapura
    Anuradhapura, North Central, Sri Lanka
    • Selvarajah Mathu, MBBS, MD · Contactmathuselvarajah@yahoo.com · 94-77-7390628
    • Selvarajah Mathu, MBBS, MD · Principal investigator
08

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Aug 2012, a primary completion of Oct 2012 and a completion of Oct 2013. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
Jun 16, 2012
First posted
Jun 20, 2012
Start
Aug 2012
Primary completionEst.
Oct 2012
CompletionEst.
Oct 2013
Last update
Jun 20, 2012
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jun 20, 2012, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT01624064
Lead sponsor
Ministry of Health, Sri Lanka
Collaborators
World Health Organization
Responsible party
Sponsor
First posted
Jun 20, 2012
Start date
Aug 2012
Primary completion
Oct 2012 (estimated)
Completion
Oct 2013 (estimated)
Last update
Jun 20, 2012

Study contacts

Selvarajah Mathu, MBBS, MD
Contact
mathuselvarajah@yahoo.com
94-77-7390628
Navaratnasingam Janakan, MBBS, MSc, MD
Contact
navajanakan@yahoo.com
94-77-7489813
Selvarajah Mathu, MBBS, MD
principal investigator · Ministry of Health
Shanthi Mendis, MBBS, MD
principal investigator · World Health Organization
Rezvi Sheriff, MBBS, MD
principal investigator · University of Colombo
Thilak Abeysekera, MBBS, MD
principal investigator · Ministry of Health
Saroj Jayasinghe, MBBS, MD
principal investigator · University of Colombo

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Jun 2012. You cannot join it, but the record below documents what was studied.

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