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Hunting the genes behind calcium kidney stones

NCT ID NCT05972408

Knowledge-focused Sponsor: Mansoura University Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 10, 2026 · Last updated Sep 11, 2026 · Updated 1 time

Summary

Researchers at Mansoura Urology and Nephrology Center in Egypt are studying patients with kidney stones to learn how common calcium-based stones are and whether certain gene variants play a role. The study enrolls about 84 people, including patients who need stone removal and healthy controls without urinary problems. Participants provide stone samples for chemical analysis and blood for genetic testing of the VDR and CASR genes. The team also tracks whether stones come back within two years after treatment.

What this could mean

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

What this could lead to
If researchers link specific gene variants to calcium kidney stones, doctors could one day use a genetic test to spot people at higher risk and tailor prevention.
What could go wrong
This is a small observational study at a single center in Egypt, so its findings may not apply to other populations. It looks for associations, not proof that genes cause stones.

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.

Participants

84 people

The number who actually took part.

Started

Mar 2021

Finished

Jan 2024

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.

Who is studied

All patients with unilateral or bilateral renal stones (de novo or recurrent) who were candidates for endoscopic or surgical intervention

Ages

Children (under 18), adults (18 to 64) and older adults (65 and over)

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * All patients with unilateral or bilateral renal stones (de novo or recurrent) who were candidates for endoscopic or surgical intervention were included. Metabolic workup was done for selected patients with radio-opaque stones, while genetic testing was done for those with dominant Ca composition proven by postoperative stone analysis. Thirty healthy individuals with no urologic abnormalities were involved as control cases. Patients with renal calculi for whom metabolic and genetic testing were performed are designated "α" cases. Exclusion Criteria: * For metabolic and genetic testing, patients with a well-known lesion precipitating stone disease were excluded e.g. ureteric stricture, ureteropelvic or ureterovesical junction obstruction, urinary diversion, history of ureterovesical re-implantation as well as patients with non-Ca stones by post-operative stone analysis

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Conditions

The condition(s) this trial relates to.

Kidney Calculi nephrolithiasis

As listed by the trial registrant

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

Renal calculi

Contacts and locations

Locations

  • Mansoura University

    Al Mansurah, Outside U.S./Canada, 35561, Egypt

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