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Which surgery is best for 2-3 cm kidney stones? major trial aims to find out

NCT ID NCT07295860

Disease control Sponsor: Mansoura University 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study will compare two minimally invasive surgeries for kidney stones that are 2-3 cm in size. About 280 adults across nine hospitals will be randomly assigned to either FANS-based flexible ureteroscopy or suction-assisted mini-PCNL. The main goal is to see which method removes more stones completely after one month, while also tracking complications, pain, and recovery time.

What this could mean

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

Active substance
surgical procedures (FANS-based flexible ureteroscopy and suction-assisted mini-percutaneous nephrolithotomy)
What this could lead to
If successful, this study could help doctors choose the best surgical method for medium-sized kidney stones, leading to fewer complications and better stone clearance.
What could go wrong
This is a surgical comparison trial, not a new drug or device. Results may not apply to all patients, and both procedures carry standard surgical risks like infection or bleeding.

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 254 people

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

Expected to start

Jan 2026

An estimate. Start dates often move.

Expected to finish

Mar 2027

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 years and older

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: * Adults ≥18 years old. * Single or multiple renal stones measuring 2 -3 cm (diagnosed by NCCT). * Negative urine culture prior to surgery. * Suitable for general/spinal anesthesia. * Signed informed consent. Exclusion Criteria: * Active urinary tract infection. * Anomalous renal anatomy (e.g., horseshoe kidney). * Severe ureteral strictures preventing retrograde access. * Coagulopathy or inability to discontinue anticoagulation.

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Conditions

The condition(s) this trial relates to.

Kidney Calculi nephrolithiasis Urinary Calculi urolithiasis

As listed by the trial registrant

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

Stone, kidney Stone, urinary

How to take part

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

  1. The places running it

    9 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

  • Ain Shams University

    Cairo, Egypt

  • Alexandria University

    Alexandria, Egypt

  • Assuit University

    Asyut, Egypt

  • Cairo university

    Cairo, Egypt

  • Menoufia University

    Shibīn al Kawm, Egypt

  • Minya University

    Minya, Egypt

  • Tanta University

    Tanta, Egypt

  • Urology and nephrology center

    Al Mansurah, Outside U.S./Canada, 35516, Egypt

  • Zagazig university

    Zagazig, Egypt

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