Den här översättningen är inte klar ännu. Den här sidan är just nu på engelska.

Gå till den engelska sidan

Cure My Disease

Don't miss your cure!

 Log in / Sign up

Can a gut bug beat kidney stones?

NCT ID NCT06330246

Disease control Sponsor: University of Alabama at Birmingham Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Aug 28, 2026 · Updated 2 times

Summary

This study tests whether giving people a live gut bacterium called Oxalobacter formigenes can lower the amount of oxalate in their urine. High urinary oxalate is a major risk factor for calcium oxalate kidney stones. Forty adults with a history of such stones who lack this bacterium will take it by mouth, then follow controlled diets to measure changes in oxalate levels.

What this could mean

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

Active substance
live Oxalobacter formigenes bacteria
What this could lead to
If it works, this could point toward a natural way to reduce kidney stone risk by restoring a helpful gut bacterium.
What could go wrong
This is a small, early-stage study with only 40 participants. It tests a short-term effect, and long-term benefits or safety are not yet known.

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 40 people

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

Started

Apr 2024

Expected to finish

Dec 2031

An estimate. End dates often move.

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 * age 19-70 yrs * Body Mass Index \> 18.5 kg/m2 * First time or recurrent Calcium Oxalate stone former. Composition of most recent stone ≥ 50% calcium oxalate if available * Not colonized with Oxalobacter formigenes * Normal fasting serum electrolytes on comprehensive metabolic profile * Willing to ingest fixed diets * Willing to stop supplements (vitamins including vitamin C, calcium (citrate or carbonate) and other minerals, herbal supplements, nutritional aids, probiotics) for 2 weeks before start and during fixed diet phases. * If on medications for stone prevention (e.g. thiazides, citrate, allopurinol), stable dose regimen for at least 2 weeks prior to and during study Exclusion Criteria * Chronic Kidney Disease stage 4-5 * Primary hyperoxaluria * Liver, endocrine or renal diseases (other than idiopathic Calcium Oxalate kidney stones) or any other condition that may influence the absorption, transport or urinary excretion of ions, which will compromise the interpretation of results, including: Cystic fibrosis, Cystinuria, Uric acid stone former, Nephrotic syndrome, Sarcoidosis, Renal tubular acidosis, Primary hyperparathyroidism, Neurogenic bladder, Urinary diversion * Pregnancy or breast-feeding * Incompatible dietary requirements with the study, food allergies or intolerance to any of the foods in study menus * Active malignancy or treatment for malignancy within 12 months prior to screening * Utilization of immunosuppressive medication * Uncontrolled Hypertension or diabetes * Diabetes type 1 * Current Colonization with Oxalobacter formigenes

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for Calcium oxalate kidney stone disease are added.

Vår säkerhetsrekommendation!

Genom att skicka in godkänner du våra Användarvillkor

Conditions

The condition(s) this trial relates to.

Hyperoxaluria Kidney Calculi nephrolithiasis nephrolithiasis, calcium oxalate primary hyperoxaluria urolithiasis

As listed by the trial registrant

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

Kidney calculi Kidney stone Nephrolithiasis Nephrolithiasis, calcium oxalate Oxalate urolithiasis Oxaluria Urolithiasis Urolithiasis, calcium oxalate

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    2 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • UTSW

    RECRUITING

    Dallas, Texas, 75390, United States

  • University of Alabama at Birmingham

    RECRUITING

    Birmingham, Alabama, 35294, United States

More trials for these conditions

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