Establishing the Safety and Efficacy of Reloxaliase in Patients With Enteric Hyperoxaluria (URIROX-2)
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ClinicalTrials.gov Identifier: NCT03847090 |
Recruitment Status :
Terminated
(Interim Analysis -)
First Posted : February 20, 2019
Last Update Posted : June 10, 2022
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Condition or disease | Intervention/treatment | Phase |
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Enteric Hyperoxaluria | Drug: Reloxaliase Drug: Placebo | Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 92 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Double (Participant, Investigator) |
Primary Purpose: | Treatment |
Official Title: | Establishing the Safety and Efficacy of Reloxaliase (Oxalate Decarboxylase) in Patients With Enteric Hyperoxaluria: A Phase III Randomized, Double-Blind, Placebo-Controlled Study (URIROX-2) |
Actual Study Start Date : | August 26, 2019 |
Actual Primary Completion Date : | May 19, 2022 |
Actual Study Completion Date : | May 19, 2022 |
Arm | Intervention/treatment |
---|---|
Experimental: Reloxaliase
Reloxaliase (ALLN-177) 142 mg of oxalate decarboxylase (equivalent to 3,750 units of enzyme activity) per capsule
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Drug: Reloxaliase
Reloxaliase 2 capsules, orally, with each meal/snack, 3 to 5 times per day
Other Names:
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Placebo Comparator: placebo
placebo capsule
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Drug: Placebo
Placebo 2 capsules, orally, with each meal/snack, 3 to 5 times per day
Other Name: Placebo capsule |
- Percent change from baseline in 24-hour urinary oxalate excretion during Weeks 1 to 4 [ Time Frame: 4 weeks ]Efficacy will be assessed based on percent change from baseline to the average across Weeks 1 to 4, derived from all 24-hour collections during Weeks 1 to 4 on treatment
- Proportion of subjects with kidney stone disease progression (composite of symptomatic kidney stone(s) or finding of new or enlarged kidney stone(s) on imaging) [ Time Frame: up to 48 months ]Efficacy will be assessed by comparing kidney stone disease progression event rate on reloxaliase vs. placebo
- Percent change from baseline in 24-hour urinary oxalate excretion during Weeks 16-24 [ Time Frame: 24 weeks ]Efficacy will be assessed based on percent change from baseline to the average across Weeks 16-24, derived from all 24-hour collections during Weeks 16-24 on treatment
- Proportion of subjects with a ≥ 20% reduction from baseline in 24-hour urinary oxalate excretion during Weeks 1-4 [ Time Frame: 4 weeks ]Efficacy will be assessed based on proportion of subjects with ≥ 20% reduction from baseline to the average across Weeks 1-4, derived from all 24-hour collections during Weeks 1-4 on treatment
- Hospitalizations or emergency room (ER) visits or procedures for the management of kidney stones [ Time Frame: up to 48 months ]Efficacy will be assessed by comparing utilization on reloxaliase vs. placebo
- Change in estimated glomerular filtration rate (eGFR) from baseline [ Time Frame: up to 48 months ]Efficacy will be assessed by comparing the rate of change in eGFR on reloxaliase vs. placebo

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Provided informed consent
- Age 18 years or older
- Has an underlying enteric disorder associated with malabsorption with known or suspected history of hyperoxaluria (e.g., history of kidney stones or oxalate nephropathy)
- Urinary oxalate ≥ 50 mg/24 hr
- Has at least 1 documented kidney stone within 2 years
Exclusion Criteria:
- Acute renal failure or estimated glomerular filtration rate (eGFR) < 30 mL/minute/1.73 m2
- Has a known genetic, congenital, or other cause of kidney stones
- Unable or unwilling to discontinue Vitamin C supplementation >200mg daily
- Cannot establish baseline kidney stone burden

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03847090

Study Director: | David Clark, MD | Allena Pharmaceuticals Inc |
Publications:
Responsible Party: | Allena Pharmaceuticals |
ClinicalTrials.gov Identifier: | NCT03847090 |
Other Study ID Numbers: |
ALLN-177-302 2018-000921-29 ( EudraCT Number ) |
First Posted: | February 20, 2019 Key Record Dates |
Last Update Posted: | June 10, 2022 |
Last Verified: | June 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
kidney stone hyperoxaluria enteric hyperoxaluria oxalate kidney calcification |