Planned date reported by the registry; this milestone is not confirmed as achieved.
Study Completion
November 2028
Estimated
Planned date reported by the registry; this milestone is not confirmed as achieved.
Brief Summary
The RENATO trial is a multicenter randomized controlled trial that evaluates the efficacy of pioglitazone to improve renal outcomes in ANCA-associated vasculitis.
Patients with biopsy-proven kidney involvement of ANCA vasculitis will be included in this trial at diagnosis. All patients will receive a standard of care immunosuppressive (SOC) therapy combining corticosteroids and rituximab (375 mg/m2/week for 4 consecutive weals followed by 500 mg re-infusion every 6 months). They will be randomized 1:1 to receive either pioglitazone 30 mg/day or placebo for 6 months, on top of SOC. The primary objective of this trial is to demonstrate that pioglitazone reduces kidney damage, reflected by the early improvement of proteinuria and serum creatinine levels. The secondary objectives will be to assess the efficacy of this drug on the reduction of hypertension and metabolic effects of glucocorticoids, to measure its impact on vasculitis activity and to evaluate the safety profile of pioglitazone in this population.
Registry Overview
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
Recruitment status
recruiting
Estimated enrollment
126 participants
Study completion date
November 2028
Estimated
Planned date reported by the registry; this milestone is not confirmed as achieved.
Listed locations
1 countries · 25 sites
Trial Relationships
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Related Scientific Literature
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Study Timeline
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
First Submitted
June 6, 2023
Actual (reported)
First Posted
July 14, 2023
Actual (reported)
Study Start
October 24, 2023
Actual (reported)
Primary Completion
April 24, 2028
Estimated
Planned date reported by the registry; this milestone is not confirmed as achieved.
Study Completion
November 2028
Estimated
Planned date reported by the registry; this milestone is not confirmed as achieved.
Patient will be randomize in the intervention group receive treatment by pioglitazone (30 mg/day orally) for 26 weeks on top of a SOC immunosuppressive treatment.
Patient will be randomize in the intervention group receive treatment by placebo of pioglitazone (30 mg/day orally) for 26 weeks on top of a SOC immunosuppressive treatment.
Placebo of pioglitazone
Registry intervention entries
These entries preserve how the registry describes the intervention. Their treatment roles are shown separately from molecular identities.
Formulated product
PREDNISONE
The registry describes a specific formulation. Its exact chemical ingredients and approval status require separate evidence.
Newly-diagnosed or relapsing ANCA-associated vasculitis, i.e. granulomatosis with polyangitis (GPA) or microscopic polyangiitis (MPA), according to ACR 1990 criteria and/or revised Chapel Hill Consensus Conference definitions and/or European Medical Agency algorithm, with an active disease defined as a BVAS ≥3
Model Details: Comparative, multicentre, prospective, randomized, placebo-controlled double-blind phase III trial, evaluating the efficacy of add-on pioglitazone therapy on top of a standard of care (SOC) immunosuppressive therapy, in patients with ANCA-associated vasculitis and biopsy-proven renal involvement. Patients eligible for the study will be assigned in a 1:1 randomized fashion to additional treatment by pioglitazone (30 mg/day orally) or to placebo for 26 weeks on top of a SOC immunosuppressive treatment.
Recent (\<4 weeks) renal biopsy that confirms active renal involvement of ANCA-associated vasculitis
Patients aged of 18 to 80 years
Participant written informed consent prior to participation in the study
Participants affiliated to a French health insurance system (registered or being a beneficiary of such a scheme)
You may not qualify if:
Patients with eosinophilic granulomatosis with polyangiitis (EGPA, Churg-Strauss)
Active cancer (except non-melanoma skin cancer) within the past 24 months
Active severe bacterial, viral or fungal infectious disease
Past history of bladder or urinary tract cancer
History of Class 3/4 congestive heart failure symptoms, any time
History of Class 2 heart failure symptoms within the past 3 months and/or ejection fraction \<40% on recent echocardiography (\<1 month)
Transaminases levels above 2 times the normal range value (\<1 month) or any severe chronic liver disease
Presence of neutropenia \<1000 cells/l (\<1 month)
History of intolerance to any thiazolidinedione (including Pioglitazone), to rituximab or any excipient listed in SmPc
Diabetic ketoacidosis, any time
A pre-existing or an important risk of new-onset macular edema (confirmed by an ophthalmological examination)
Pregnant or breast-feeding women, or desire to become pregnant within 24 months All women of childbearing potential (WOCBP) are required to have a negative pregnancy test before treatment and must agree to maintain highly effective contraception by practicing abstinence or by using an effective method of birth control from the date of consent through the end of the study and another 12 months after (or 12 months after the last rituximab infusion in case of premature termination): Combined (estrogen and progestogen containing) hormonal contraception associated with inhibition of ovulation (Oral, Intravaginal, Transdermal); Progestogen-only hormonal contraception associated with inhibition of ovulation (Oral, Injectable, Implantable); Intrauterine device (IUD); Intrauterine hormone-releasing system (IUS); Bilateral tubal occlusion; Vasectomised partner
Severe neurologic or psychiatric disease (e.g., dementia or schizophrenia)
Kidney transplant recipients
Cyclophosphamide or rituximab (dose \> 375 mg/m2) use within 26 weeks prior to screening; if on azathioprine, mycophenolate mofetil or methotrexate at the time of screening, these drugs must be withdrawn prior to receiving the first rituximab dose. Patients that have initiated induction therapy with rituximab for the actual flare, can be included in the present study within 48h following the first rituximab infusion
Planned date reported by the registry; this milestone is not confirmed as achieved.
Study Completion
November 2028
Estimated
Planned date reported by the registry; this milestone is not confirmed as achieved.
Last Updated
July 1, 2026
Record last verified: 2026-06
Data Sharing
IPD Sharing
Will share
Individual participant data (IPD) that underlie results in publication could be shared. IPD detailed in the protocol of a planned metaanalysis could be shared
Shared Documents
STUDY PROTOCOL, ICF
Time Frame
Two years after the last publication
Access Criteria
Data sharing must be accepted by the sponsor and the PI based on a scientific project and scientific involvement of the PI team. Collaboration will be fostered.
Data sharing must respect the agreements made with funders. Teams wishing obtain IPD must meet the sponsor and IP team to present scientific (and commercial) purpose, IPD needed, format of data transmission, and timeframe. Technical feasibility and financial support will be discussed before mandatory contractual agreement.
Processing of shared data must comply with European General Data Protection Regulation (GDPR).
Source records
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Source: ClinicalTrials.gov.
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