CI

At a glance

ClinicalIndex Comparison Record
N/ACompleted· 14 enrolled / 14 target
Drug / intervention
Low Oxalate Diet +1 moredietary
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT04051346
NCT04051346N/ACompletedUpdate Overdue (0.2/mo)Completion was 14mo ago

Dietary Oxalate and Innate Immunity in Kidney Stone Disease

University of Alabama at Birmingham·interventional·Posted Aug 9, 2019·Updated Jun 26, 2026

In Brief

A clinical study evaluating Low Oxalate Diet and High Oxalate Diet for Kidney Stone. Completed, enrolled 14 participants across 1 site.

Signals

Enrollment appears stalled

Detailed Summary

This study will test whether oxalate stimulates urinary crystals and impacts the immune system in healthy subjects using two controlled diets (low and high oxalate).

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsKidney Stone
CountriesUnited States

Timeline

N/ACompletedFinished
2020202120222023202420252026
First PostedAug 9, 2019
Enrollment StartMar 5, 2021
Primary CompletionMay 1, 2025
TodayJul 2, 2026
Enrollment to primary: 4.2 yearsPosted 6.9 years ago

Arms & Interventions

Low Oxalate Dietexperimental

Subjects will consume a low oxalate diet for four days, with blood and 24-hour urine collections occurring at baseline and post diet. A ten day wash out period will follow, during which the subject will consume a self-selected diet. Subjects will then consume the high oxalate diet for the final four days, with blood and 24-hour urine collections once again occurring at baseline and post diet.

Dietary Supplement: Low Oxalate Diet
High Oxalate Dietexperimental

Subjects will consume a high oxalate diet for four days, with blood and 24-hour urine collections occurring at baseline and post diet. A ten day wash out period will follow, during which the subject will consume a self-selected diet. Subjects will then consume the low oxalate diet for the final four days, with blood and 24-hour urine collections once again occurring at baseline and post diet.

Dietary Supplement: High Oxalate Diet

Interventions

Low Oxalate Dietdietary

Participants will consume a diet that is controlled in its daily contents of oxalate and calcium, and in its content of carbohydrate, fat, and protein. Participants will be asked not to take any dietary supplements, to exercise strenuously, or to consume food or drink that is not provided to them.

High Oxalate Dietdietary

Participants will consume a diet that is controlled in its daily contents of oxalate and calcium, and in its content of carbohydrate, fat, and protein. Participants will be asked not to take any dietary supplements, to exercise strenuously, or to consume food or drink that is not provided to them.