Clinical trial Recruiting at 1 site Interventional Ages 18 to 90

Evaluating genetic factors in patients with calcium phosphate kidney stones

Official title: Evaluation of Genetic Abnormalities Amongst Calcium Phosphate Predominant Stone Formers With Alkaline Urine pH on 24 Hour Urine Testing

Run by University of Iowa · NCT06974357 · Data updated 2026-11-12

This study is testing if certain genetic factors in people with calcium phosphate kidney stones can help us understand how to prevent and manage these stones better.

More Nephrolithiasis trials

Quick facts

Study typeInterventional
Ages18 Years to 90 Years
SexAll
Enrollment15 (estimated)
SponsorUniversity of Iowa
Academic / other
Locations1 site (Iowa City, Iowa)
StatusRecruiting
StartedMarch 15, 2025
Main results expectedMarch 1, 2027
Study endsMarch 1, 2027
Registry record updatedMay 21, 2025
Trial IDNCT06974357 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 18-90 with a history of calcium phosphate kidney stones and specific urine pH levels.

Probably not a fit

Patients over 90 years old, those without evidence of calcium phosphate stones, or those with certain medical conditions will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study investigates the genetic abnormalities present in patients who form calcium phosphate kidney stones, a less common type of stone. It aims to determine whether these genetic factors contribute to the formation of stones, which could lead to improved management and prevention strategies. Participants will undergo genetic testing to identify any abnormalities linked to their condition. The study focuses on patients with a specific urine pH and stone composition, providing a targeted approach to understanding this issue.

Why it matters

Potential benefit: If successful, this study could lead to personalized treatment strategies for patients with calcium phosphate kidney stones, improving their quality of life.

How similar studies have gone: While genetic testing for kidney stones is not widely recommended, this study explores a novel approach that could provide new insights into the genetic factors involved in stone formation.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Any patient, aged 18-90 and not incarcerated, under the care of a urologist at UIHC with known kidney stone composition including \>=60% calcium phosphate and baseline 24 hour urine pH of \>=6.3

Exclusion Criteria:

\- Any patient over the age of 90 years old, incarcerated or without any evidence of calcium phosphate stone composition

* No struvite component on prior stone analysis
* No bacteria with urease producing organism at time of stone removal
* No history or evidence of systemic acidosis
* No use of acetazolamide, topiramate, zonisamide, valproic acid
* Stage \>=3 CKD (GFR\<60)
* Hepatic disease
* Pregnancy
* History of osteoporosis

Where it's running

  • University of Iowa
    Iowa City, Iowa, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.