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Study identifier: NCT05373264 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

HYDROchlorothiazide to PROTECT Polycystic Kidney Disease Patients and Improve Their Quality of Life

Condition: ADPKD  ·  Sponsor: University Medical Center Groningen

PhasePhase 3
Planned participants300
Who can joinAll sexes, 18 Years to 80 Years
Healthy volunteersNo

About this study

Autosomal dominant polycystic kidney disease (ADPKD) is characterized by progressive formation of renal cysts which ultimately lead to a loss of renal function. Tolvaptan (a V2R antagonist) is currently the only effective treatment for preserving renal function in ADPKD. However, side-effects such as polyuria limit its tolerability and thereby the therapeutic potential. This study will test whether co-administration with hydochlorothiazide can improve V2RA efficacy (slowing kidney function decline) and tolerability (quality of life) in ADPKD. Approximately 300 patients will be enrolled.

This description comes directly from the study's public registry record.

Talk to the study team

Dr. E Meijer  ·  +31 50 3616161  ·  esther.meijer@umcg.nl

T. Bais, MD  ·  t.bais@umcg.nl

Always discuss trial participation with your own doctor first.

Locations (12)

Cliniques Universitaires Saint-LucBrussels, BelgiumRecruiting
University Hospital LeuvenLeuven, BelgiumRecruiting
Hospital La Cavale BlancheBrest, FranceRecruiting
Necker-Enfants Malades HospitalParis, FranceRecruiting
Charité University HospitalBerlin, GermanyRecruiting
University Hospital CologneCologne, GermanyRecruiting
Med. Klinik und Poliklinik III, Universitätsklinikum Dresden.Dresden, GermanyRecruiting
Amsterdam University Medical CenterAmsterdam, NetherlandsRecruiting
University Medical Center GroningenGroningen, NetherlandsRecruiting
Erasmus University Medical CenterRotterdam, NetherlandsRecruiting
Fundación PuigvertBarcelona, SpainRecruiting
La Fundación Jiménez DíazMadrid, SpainRecruiting

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Source record: clinicaltrials.gov/study/NCT05373264