Study on AGXT Gene and Kidney Stones

This study is looking at how a specific gene change (a heterozygous mutation of the AGXT gene) affects how much oxalate (a substance that can form kidney stones) your body makes, especially if you've had calcium oxalate kidney stones before. You would eat a controlled low oxalate diet for five days. Researchers will measure the amount of oxalate in your urine to see if this gene change affects it. To join, you need to be at least 18 years old, have a history of calcium oxalate kidney stones, and have the specific AGXT gene mutation confirmed by an Invitae Nephrolithiasis Panel test. Pregnant or breastfeeding individuals cannot participate. The study is currently unclear on its recruitment status.

Study design
This is an interventional study with a planned enrollment of 4 participants. It is not specified if it is randomized or blinded.
What's involved
You would need to follow a controlled low oxalate diet for five days and provide blood and urine samples.
Compensation
Not stated in the trial record.
Follow-up
Urinary oxalate excretion will be measured from baseline through Day 4. It is not specified if there is follow-up after this period.

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NCT04430426

Heterozygous Individuals for AGXT and Kidney Stones

Enrolling by Invitation
NAAges 18+Interventional
University of Alabama at Birmingham
~4 participants
Updated 2026-07-20 on ClinicalTrials.gov
What's tested:Controlled Diet

At a glance

Recruiting sites
0 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Urinary Oxalate Excretion
Measured over Baseline through Day 4
Kidney Stone
Urolithiasis, Calcium Oxalate
1 sites across 1 states
Alabama1
  • Kyle Wood, MD · PRINCIPAL_INVESTIGATOR · University of Alabama at Birmingham

This trial hasn't published a contact. View it on ClinicalTrials.gov

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Eligibility criteria

Inclusion

at least 18 years of age
history of calcium oxalate stones
heterozygous mutation of the AGXT gene, as evidenced by results from the Invitae Nephrolithiasis Panel
willingness to comply with a controlled diet for five days

Exclusion

pregnant individuals
individuals who are currently breast feeding
  • Urinary Oxalate ExcretionBaseline through Day 4

    Urinary oxalate excretion from urine samples will be measured as mg/day