ADPKDNCT02776241
Effect of Water Intake and Water Restriction on Total Kidney Volume in Autosomal Dominant Polycystic Kidney Disease
A study testing water in people with ADPKD, run by Copenhagen University Hospital, Rigshospitalet at 1 site in Denmark.
Trial summary
The objective of this study is to measure the influence of both short term water restriction and high water intake on total kidney volume, measured by Magnetic Resonance Imaging (MRI) scan in Autosomal Dominant Polycystic Kidney Disease (ADPKD) patients. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- ADPKD
- What is being tested?
- water
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 40 participants
- Where
- 1 siteDenmark
- Study dates
- Sep 2015to Jan 2017
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- ADPKD
- CKD stage 1-3
Who cannot join
- Patients treated with diuretics
- Pregnancy
- Change in antihypertensive treatment < 1 month
- Any condition contraindicating MR scan
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Effect of Water Intake and Water Restriction on Total Kidney Volume in Autosomal Dominant Polycystic Kidney: The HYDRA Study
The objective of this study is to measure the influence of both short term water restriction and high water intake on total kidney volume, measured by Magnetic Resonance Imaging (MRI) scan in Autosomal Dominant Polycystic Kidney Disease (ADPKD) patients.
Read the detailed description
Patients will be randomized to either water restriction for 3 hours or high water intake (20 ml/kg) for 1 hour. Before intervention and after intervention patients will have an MRI scan of the kidneys to measure the total kidney volume (TKV) (differentiated in cortex, medulla and cyst volume). The objective is to identify whether water restriction or high water load will change the TKV. Secondly investigators will analyze different biomarkers (aldosterone, renin, vasopressin/copeptin, urine- and blood-osmolarity) before and after the intervention.
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
waterOther
| Study group | Role | What they receive |
|---|---|---|
| water restriction | No intervention | 20 patients will be subjected to 3 hours of water restriction following MR scan of the kidneys. |
| high water intake | Active comparator | 20 patients will be subjected to 1 hour of high water intake (20 ml/kg) following MR scan of the kidneys. Receives: Other: water |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in total kidney volume
Measured: Baseline and 3 hours
Secondary outcomes (4)
Change in total cyst volume
Measured: Baseline and 3 hours
Change in plasma renin
Measured: Baseline and 3 hours
Change in plasma aldosterone
Measured: Baseline and 3 hours
Change in plasma copeptin
Measured: Baseline and 3 hours
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted18 May 2016 (estimated)
- Study startSep 2015
- Primary completionJan 2017
- Study completionJan 2017
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for ADPKDStudies of the same condition, open and under way.
- More trials run by Copenhagen University Hospital, RigshospitaletThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Diagnosis
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 40 participants (actual)
Sponsor and investigators
- Lead sponsor
- Copenhagen University Hospital, Rigshospitalet
- Sponsor type
- University, hospital or other
- Collaborators
- Aarhus University Hospital
- Responsible party
- Principal investigator, Signe Vinsand Naver, Copenhagen University Hospital, Rigshospitalet
- Investigators
- Signe V Naver, MD, Principal investigator, Copenhagen University Hospital, Rigshospitalet
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02776241
- Sponsor's protocol ID
- HYDRA
- Status last verified
- Sep 2017
- First submitted
- 4 May 2016
- Last updated
- 2 Oct 2017
- Results posted
- No
- Data monitoring committee
- No
- Individual data sharing
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 2 Oct 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effect of Water Intake and Water Restriction on Total Kidney Volume in Autosomal Dominant Polycystic Kidney: The HYDRA Study
- ClinicalTrials.gov ID
- NCT02776241
- Acronym / sponsor ID
- HYDRA
- Conditions
- ADPKD
- Keywords
- ADPKD, total kidney volume, kidney disease
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 40 participants (actual)
- Lead sponsor
- Copenhagen University Hospital, RigshospitaletUniversity, hospital or other
- Collaborators
- Aarhus University Hospital
- Study start
- Sep 2015
- Primary completion
- Jan 2017 (actual)
- Study completion
- Jan 2017 (actual)
- First posted
- 18 May 2016 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The objective of this study is to measure the influence of both short term water restriction and high water intake on total kidney volume, measured by Magnetic Resonance Imaging (MRI) scan in Autosomal Dominant Polycystic Kidney Disease (ADPKD) patients.
Detailed description
Patients will be randomized to either water restriction for 3 hours or high water intake (20 ml/kg) for 1 hour. Before intervention and after intervention patients will have an MRI scan of the kidneys to measure the total kidney volume (TKV) (differentiated in cortex, medulla and cyst volume). The objective is to identify whether water restriction or high water load will change the TKV. Secondly investigators will analyze different biomarkers (aldosterone, renin, vasopressin/copeptin, urine- and blood-osmolarity) before and after the intervention.
Study design
- Primary purpose
- Diagnosis
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| water restriction | No intervention | –20 patients will be subjected to 3 hours of water restriction following MR scan of the kidneys. |
| high water intake | Active comparator | Other: water20 patients will be subjected to 1 hour of high water intake (20 ml/kg) following MR scan of the kidneys. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- ADPKD
- CKD stage 1-3
Key exclusion criteria (4 listed)
- Patients treated with diuretics
- Pregnancy
- Change in antihypertensive treatment < 1 month
- Any condition contraindicating MR scan
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| water | Other | high water intake |
Primary outcome
Change in total kidney volume
Time frame: Baseline and 3 hours
4 secondary outcomes
Change in total cyst volume
Time frame: Baseline and 3 hours
Change in plasma renin
Time frame: Baseline and 3 hours
Change in plasma aldosterone
Time frame: Baseline and 3 hours
Change in plasma copeptin
Time frame: Baseline and 3 hours
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 2 Oct 2017.
- Individual participant dataSharing planned: Yes
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Signe V Naver, MD principal investigator
Copenhagen University Hospital, Rigshospitalet
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing water in people with ADPKD, run by Copenhagen University Hospital, Rigshospitalet at 1 site in Denmark.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 2 Oct 2017. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Denmark. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Change in total kidney volume (time frame: Baseline and 3 hours). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 2 Oct 2017; AzTrials last refreshed its copy on 7 Nov 2026.