Long Term Extension Study in Patients With Primary Hyperoxaluria (NCT04042402) | Clinical Trial Compass
Active — Not RecruitingPhase 3
Long Term Extension Study in Patients With Primary Hyperoxaluria
United States, Australia, Canada75 participantsStarted 2019-07-09
Plain-language summary
The proposed study is designed to provide patients previously enrolled in Phase 1 and 2 studies of DCR-PHXC and their siblings (\<18 years old) long-term access to DCR-PHXC, and to evaluate the long-term safety and efficacy of DCR-PHXC in patients with PH.
Who can participate
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Key Inclusion Criteria:
•Participant successfully completed a Dicerna Pharmaceuticals, Inc. study of DCR PHXC.
OR Participant is the sibling of a participant who successfully completed a Dicerna Pharmaceuticals, Inc. study of DCR PHXC. Siblings must be younger than 18 years of age and must have genetically confirmed PH.
* For participants rolling over from a multidose study of DCR-PHXC, enrollment should occur within a window of 25 to 75 days from the last dose of study intervention.
* Estimated GFR at screening ≥ 30 mL/min normalized to 1.73 m2 body surface area (BSA), calculated using Chronic Kidney Disease Epidemiology Collaboration (CKD EPI) formula in participants aged ≥ 18 years, or the multivariate equation by Schwartz in participants aged 12 months to 17 years. In Japan, the cystatin C-based Uemura formula will be used for participants aged 12 months to \<2 years, the creatinine-based Uemura formula by will be used for participants aged 2 to 17 years, and the equation by Matsuo will be used in participants aged ≥ 18 years.
Key Exclusion Criteria:
* Renal or hepatic transplantation (prior or planned within the study period)
* Plasma oxalate \> 30 µmol/L
* Currently on dialysis
* Documented evidence of clinical manifestations of systemic oxalosis
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
The annual rate of decline in eGFR in participants with PH1
Timeframe: Annual change from baseline
Trial details
NCT IDNCT04042402
SponsorDicerna Pharmaceuticals, Inc., a Novo Nordisk company