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Autosomal Dominant Polycystic Kidney DiseaseNCT01810614

A New Diet for Patients With Autosomal Dominant Polycystic Disease (ADPKD)

A study testing ADPKD Diet in people with Autosomal Dominant Polycystic Kidney Disease, run by University of Kansas at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Recent evidence has shown that kidney volume predicts the likelihood of developing renal insufficiency over a finite length of time in ADPKD, suggesting a linkage between the growth of cysts and the harm they do to kidney function. Read more about this study

Who is it for?
Ages 18 to 65 years
What is being tested?
ADPKD Diet
Could I receive a placebo?
No, everyone receives an active treatment
How many people
12 participants
Where
1 siteUnited States
Study dates
Feb 2013to Nov 2014
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 to 65 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Have not been prescribed dietary restrictions or enhancements
  • Blood pressure <135/85 mmHg with or without specific treatment
  • Willingness to participate for at least one month
  • Diet history consistent with the excretion of >30 mEq NAE / day based on usual dietary intake

Who cannot join

  • Other active diseases requiring pharmacologic agents
  • Unstable weight (+/- 2 kg) for 3 months prior to enrollment
  • Food allergies
  • Pregnancy or lactating
  • Confounding medications, i.e. bicarbonate, citrate
  • Individuals who do not consume meat for personal, religious, or health reasons.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • University of Kansas Medical Center

    Kansas City, Kansas, 66160

Other trials in United States

About this study

Recent evidence has shown that kidney volume predicts the likelihood of developing renal insufficiency over a finite length of time in ADPKD, suggesting a linkage between the growth of cysts and the harm they do to kidney function. Recent studies indicate that the rate of kidney volume increase is hastened by excess dietary protein, salt, and potential net acid precursors, and slowed by increased water intake sufficient to lower plasma vasopressin levels.

Diets are commonly prescribed to treat ADPKD and other renal patients with disease near the end-stage, but there is currently no specific diet prescription that takes potentially harmful dietary elements into account for ADPKD patients in the earliest stages of the disease. This study will examine a novel diet for ADPKD created by the researcher termed the ADPKD diet.

Being tested
ADPKD Diet
Keywords
ADPKD, PKD, Kidney Disease, ADPKD diet
Medical subject headings
Polycystic Kidney, Autosomal Dominant, Kidney Diseases

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • ADPKD DietOther

    Diet specifically designed for people with ADPKD

Study groups in NCT01810614
Study groupRoleWhat they receive
ADPKD DietExperimentalAll study participants will follow their regular diet for 8 days. After that, they will be asked to follow the ADPKD diet for a total of 4 weeks.
Receives: Other: ADPKD Diet

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. ADPKD diet impact on net acid excretion

    The difference in net acid excretion from a participants regular diet and the ADPKD diet

    Measured: Change from Baseline to Day 36

Secondary outcomes (2)
  1. Acceptance of ADPKD diet

    Ease with which diet will be embraced by participants

    Measured: 36 days

  2. Kidney injury markers

    Change in urine markers of renal injury in participants

    Measured: Change from Baseline to Day 36

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted13 Mar 2013 (estimated)
  2. Study startFeb 2013
  3. Primary completionNov 2014
  4. Study completionNov 2014

Resources

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
Prevention
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
12 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01810614
Sponsor's protocol ID
13493
Status last verified
Aug 2015
First submitted
11 Mar 2013
Last updated
13 Aug 2015
Results posted
No
Data monitoring committee
No

Publications

  • Taylor JM, Ptomey L, Hamilton-Reeves JM, Sullivan DK, Creed C, Carlson SE, Wesson DE, Grantham JJ, Gibson CA. Experiences and Perspectives of Polycystic Kidney Disease Patients following a Diet of Reduced Osmoles, Protein, and Acid Precursors Supplemented with Water: A Qualitative Study. PLoS One. 2016 Aug 18;11(8):e0161043. doi: 10.1371/journal.pone.0161043. eCollection 2016.

    PubMed 27537328
  • Taylor JM, Hamilton-Reeves JM, Sullivan DK, Gibson CA, Creed C, Carlson SE, Wesson DE, Grantham JJ. Diet and polycystic kidney disease: A pilot intervention study. Clin Nutr. 2017 Apr;36(2):458-466. doi: 10.1016/j.clnu.2016.01.003. Epub 2016 Jan 11.

    PubMed 26811129

Questions about this trial

What is this clinical trial studying?

A study testing ADPKD Diet in people with Autosomal Dominant Polycystic Kidney Disease, run by University of Kansas at 1 site in United States.

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 4 inclusion and 6 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 13 Aug 2015. 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 United States. 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?

ADPKD diet impact on net acid excretion (time frame: Change from Baseline to Day 36). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01810614, which also lists 2 linked publications.

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 13 Aug 2015.

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