NCT04472624

Brief Summary

Recently, it has been shown that ketose-inducing dietary interventions slow disease progression in animal models of polycystic kidney disease (PKD), even when the state of ketosis is only induced for a short period of time. The present study aims to investigate the effects of short term ketosis on total kidney volume (TKV) (and other parameters) in 10 ADPKD-patients with rapidly progressive disease.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
10

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Jul 2020

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

June 9, 2020

Completed
22 days until next milestone

Study Start

First participant enrolled

July 1, 2020

Completed
14 days until next milestone

First Posted

Study publicly available on registry

July 15, 2020

Completed
12 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 1, 2021

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

July 1, 2021

Completed
Last Updated

September 14, 2021

Status Verified

September 1, 2021

Enrollment Period

1 year

First QC Date

June 9, 2020

Last Update Submit

September 13, 2021

Conditions

Keywords

ADPKDdietary interventionketosisfastingketogenic diet

Outcome Measures

Primary Outcomes (1)

  • Relative difference of TKV immediately before and after the ketonic state

    MRI-based kidney volumetry at study visit 2 and study visit 3

    Visit 2: 2-4 Weeks after enrolment; Visit 3: 3 - 21 days after Visit 2

Secondary Outcomes (27)

  • Absolute and relative difference of TKV

    Baseline visit (V1) and final study visit (V4) after at maximum 95 days

  • Absolute and relative difference of height-adjusted total kidney volume (htTKV)

    Baseline visit (V1) and final study visit (V4) after at maximum 95 days

  • Absolute and relative difference of total liver volume (TLV)

    Baseline visit (V1) and final study visit (V4) after at maximum 95 days

  • Absolute and relative difference of cystic burden of kidneys and liver

    Baseline visit (V1) and final study visit (V4) after at maximum 95 days

  • Absolute and relative change of Renal Function Panel

    Baseline visit (V1), study visit 2 (V2): 2-4 Weeks after enrolment; Visit 3: 3 - 21 days after Visit 2, and final study visit (V4) after at maximum 95 days

  • +22 more secondary outcomes

Other Outcomes (10)

  • Changes of renal functional panel in 24-h-urine

    Baseline and during 14 days of ketogenic diet or 3 days fasting

  • Changes of electrolytes and minerals in 24-h-urine

    Baseline and during 14 days of ketogenic diet or 3 days fasting

  • Changes of glucose in 24-h-urine

    Baseline and during 14 days of ketogenic diet or 3 days fasting

  • +7 more other outcomes

Study Arms (2)

Fasting arm

EXPERIMENTAL

Participants will be fasting during 72 hours

Other: Fasting

Diet arm

EXPERIMENTAL

Participants will be using ketogenic diet for 14 days

Other: Ketogenic diet

Interventions

FastingOTHER

Acute fasting for 72 hours

Fasting arm

Intake of a ketogenic diet for 14 days

Diet arm

Eligibility Criteria

Age18 Years - 60 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64)

You may qualify if:

  • Male and female ADPKD-patients (diagnosed by genetics / typical MRI / ultrasound)
  • With evidence of fast progression, at least one of the following criteria
  • Mayo Class 1C-1E
  • Truncating PKD1-mutation
  • Hypertension \< 35 years
  • Urological complications \< 35 years
  • ≥ 1 first class or second class family member with need of renal replacement therapy \< 60 years
  • eGFR loss \> 2,5 ml/min/1,73m2 per year
  • PROPKD-Score \> 6
  • Age ≥ 18 and ≤ 60 years
  • CKD stage 1-3a according to eGFR
  • Signed written informed consent

You may not qualify if:

  • Currently under tolvaptan
  • BMI \< 18 or \> 35
  • Diabetes mellitus (Type I, Type II, MODY, LADA)
  • Active alcoholism
  • Vegan or vegetarian lifestyle
  • Inability to sign or understand written informed consent
  • Anamnestically known circumstances which forbid the induction of a ketonic state by ketogenic diet or acute fasting (Liver damage (AST/ALT \> 3x upper limit of normal, alkaline phosphatase \> 6x upper limit of normal , Bilirubin ≥ 3 mg/dl), Diabetes mellitus, Pyruvate carboxylase deficiency, defects of gluconeogenesis, defects of ketolysis / ketogenesis, hyperinsulinism, defects of fatty acid oxidation )
  • Allergies or food intolerance against components of a ketogenic diet
  • Eating disorders (Anorexia nervosa / Bulimia)
  • Participation in a weight loss program (e.g. Optifast) or intake of medication to promote weight loss within the last six months
  • Ketogenic Diet \> 1 month within the last 12 months
  • Chronic renal replacement therapy
  • Previous history of kidney transplantation
  • Uncontrolled local or systemic infection (according to clinical assessment)
  • Simultaneous participation in other interventional studies
  • +4 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Department II of Internal Medicine, University Hospital Cologne

Cologne, 50937, Germany

Location

Related Publications (1)

  • Torres JA, Kruger SL, Broderick C, Amarlkhagva T, Agrawal S, Dodam JR, Mrug M, Lyons LA, Weimbs T. Ketosis Ameliorates Renal Cyst Growth in Polycystic Kidney Disease. Cell Metab. 2019 Dec 3;30(6):1007-1023.e5. doi: 10.1016/j.cmet.2019.09.012. Epub 2019 Oct 17.

    PMID: 31631001BACKGROUND

MeSH Terms

Conditions

Polycystic Kidney, Autosomal DominantKetosisFasting

Interventions

Angptl4 protein, mouseDiet, Ketogenic

Condition Hierarchy (Ancestors)

Polycystic Kidney DiseasesKidney Diseases, CysticKidney DiseasesUrologic DiseasesFemale Urogenital DiseasesFemale Urogenital Diseases and Pregnancy ComplicationsUrogenital DiseasesMale Urogenital DiseasesAbnormalities, MultipleCongenital AbnormalitiesCongenital, Hereditary, and Neonatal Diseases and AbnormalitiesCiliopathiesGenetic Diseases, InbornAcidosisAcid-Base ImbalanceMetabolic DiseasesNutritional and Metabolic DiseasesFeeding BehaviorBehavior

Intervention Hierarchy (Ancestors)

Diet, Carbohydrate-RestrictedDiet TherapyNutrition TherapyTherapeuticsDietNutritional Physiological PhenomenaDiet, Food, and NutritionPhysiological Phenomena

Study Officials

  • Roman-Ulrich Müller, Prof.

    Department II of Internal Medicine, University of Cologne

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NON RANDOMIZED
Masking
NONE
Purpose
OTHER
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Department II of Internal Medicine

Study Record Dates

First Submitted

June 9, 2020

First Posted

July 15, 2020

Study Start

July 1, 2020

Primary Completion

July 1, 2021

Study Completion

July 1, 2021

Last Updated

September 14, 2021

Record last verified: 2021-09

Data Sharing

IPD Sharing
Will not share

Locations