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Weight loss surgery may shield kidneys in obese patients

NCT ID NCT02830646

Knowledge-focused Sponsor: Centre Hospitalier Universitaire de Nice Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at whether gastric bypass surgery can protect the kidneys of people who are severely obese and have chronic kidney disease. Researchers measured kidney function before and one year after surgery in 14 patients. The goal is to see if the surgery improves the balance between kidney filtration and body fluid volume.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
gastric bypass surgery
What this could lead to
If successful, this could show that bariatric surgery protects kidney function in obese patients with chronic kidney disease.
What could go wrong
This is a very small, early study with only 14 participants, so results may not apply to everyone. It measures a ratio, not a direct health outcome.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 14 people

The number the study aims to enrol. It can still change while the study runs.

Started

Dec 2015

Finished

Mar 2020

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 70 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Topic GFR estimated by having the simplified formula of MDRD \<60 ml / min / 1.73 m² * Topic with BMI ≥ 40 kg / m², or ≥ 35 kg / m² * Subject having at least one comorbidity could be improved after surgery after failure of medical treatment: hypertension , OSAHS and other severe respiratory disorders, severe metabolic disorders, particularly type 2 diabetes , debilitating musculoskeletal diseases, steatohepatitis nonalcoholic . * Topic who signed the informed consent * Topic affiliated to the social security * Male or female Topics * Elderly 18 to 70 inclusive Exclusion Criteria: * Non- Caucasian person because the necessary correction factors and not always available for the formula to estimate GFR ( Cockcroft , Salazar and Corcoran ) . * No major under guardianship * Nobody hospitalized without his consent and not protected by law * Private person of liberty * Pregnant Woman, knowing that a pregnancy test will be performed for women of childbearing age . Results will be communicated to the patient by a doctor of his choice. * Rapidly progressive glomerulonephritis * Nephrotic proteinuria ranking

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Conditions

The condition(s) this trial relates to.

chronic kidney disease morbid obesity Obesity obesity disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Obesity

Contacts and locations

Locations

  • CHU de Nice

    Nice, France

More trials for these conditions

Other studies related to the condition(s) this trial covers.