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New study tests which laser technique clears kidney stones faster

NCT ID NCT07639385

Symptom relief Sponsor: Bir Hospital 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jul 01, 2026 · Updated 2 times

Summary

This study compares two ways to break up kidney stones using a laser and a suction device. One method turns stones into dust, the other into small fragments. The goal is to see which leaves fewer stone pieces behind after one month. About 86 adults with small kidney stones will take part.

What this could mean

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

Active substance
Thulium Fiber Laser (TFL) with Flexible and Navigable Ureteral Access Sheath (FANS)
What this could lead to
If dusting works better, it could mean faster, less invasive kidney stone removal with fewer repeat procedures.
What could go wrong
This is a small, early-stage trial with only 86 participants, so results may not apply to everyone. Both techniques are already used, so the difference may be small.

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 86 people

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

Expected to start

Aug 2026

An estimate. Start dates often move.

Expected to finish

Aug 2027

An estimate. End dates often move.

Lead sponsor

A government agency

The lead sponsor is a government body.

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: * Age ≥18 years * Renal stone(s) confirmed on non-contrast CT KUB * Total stone less than 2cm * Stone amenable to flexible ureterorenoscopy (FURS) * FANS advanced beyond Pelvi-Ureteric Junction (PUJ) * Able and willing to provide written informed consent * Able to comply with follow-up schedule Exclusion Criteria: * Active urinary tract infection (positive urine culture) at time of planned surgery * Anatomical anomalies precluding safe FURS (e.g., infundibular stenosis, severe calyceal diverticulum inaccessible to flexible scope) * Pregnancy or breastfeeding * Prior ipsilateral renal surgery within 3 months of enrollment * Concurrent ureteral stone(s) requiring simultaneous treatment * Renal anomalies: horseshoe kidney, ectopic kidney * Sheathless procedure * Unable to comply with follow-up or provide consent * Participation in another interventional trial within 30 days

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Conditions

The condition(s) this trial relates to.

Fanconi anemia, complementation group S nephrolithiasis

As listed by the trial registrant

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

FANS Lithotripsy, laser Renal stone Thulium fiber laser

How to take part

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

  1. 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 ↗

  2. 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.

More trials for these conditions

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