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Finger length may hold clues to kidney stone risk

NCT ID NCT07736924

Knowledge-focused Sponsor: Emrah Kızılay Source: ClinicalTrials.gov ↗

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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.
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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 Results may not be published yet.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)

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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
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Status unknown
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First seen Jul 30, 2026 · Last updated Jul 31, 2026 · Updated 1 time

Summary

This observational study investigates whether the ratio of the second to fourth finger length (2D:4D) is associated with urinary stone disease. Researchers will compare finger measurements between adults with kidney or ureteral stones and stone-free controls, all confirmed by CT scans. The study also examines whether this ratio relates to stone recurrence, burden, or bilaterality.

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

About 300 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

Jan 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.

Who is studied

The study population will consist of consecutive adults undergoing non-contrast computed tomography at Malatya Training and Research Hospital during the study period. Participants with kidney and/or ureteral stones will constitute the case group. Participants without urinary stones on computed tomography and without a previous history of urinary stone disease or stone surgery will constitute the control group.

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 or older * Provision of written informed consent * Undergoing non-contrast computed tomography at Malatya Training and Research Hospital during the study period * For cases: presence of at least one kidney and/or ureteral stone on non-contrast computed tomography * For controls: absence of stones in the kidneys, ureters, and bladder on non-contrast computed tomography * For controls: no previous physician-diagnosed urinary stone disease or history of stone-related surgery * Feasibility of bilateral second- and fourth-digit length measurements Exclusion Criteria: * Congenital deformity of the hands or fingers * History of hand or finger trauma, fracture, surgery, or amputation that may affect digit length measurement * Severe hand deformity, contracture, or advanced joint disease preventing reliable measurement * Incomplete, inadequate, or technically unreliable 2D:4D measurements * Missing essential clinical, demographic, or imaging data * Pregnancy * Presence of bladder stones * Urinary diversion, major urinary tract reconstruction, or a significant structural urinary tract anomaly

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Conditions

The condition(s) this trial relates to.

Kidney Calculi Urinary Calculi urolithiasis

As listed by the trial registrant

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

Urinary stone

How to take part

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

  1. The places running it

    1 site. 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

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Contacts and locations

Locations

  • Malatya Training and Research Hospital

    Malatya, Malatya, 44000, Turkey (Türkiye)

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