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NCT Number: NCT06392828

EndoNAFLD: Relationship Between Fatty Liver Disease and Cardiovascular Diseases

Management of risk factors is the primary approach to prevent cardiovascular disease (CVD). In this regard the accurate scoring of disease risk is fundamental. Non-alcoholic fatty liver disease (NAFLD) has emerged recently as a potential mediator of CVD onset and progression. The hypothesis is that NAFLD can be a predictive CVD risk factor, independent of other classical and well-known risk factors.

Preliminary epidemiological studies suggested that the fat infiltration in the liver mirrored the cardiometabolic status of the patient. But recent studies postulate that NAFLD could be a potential independent predictor of vascular injury.

The mechanisms that link liver function and endothelial damage include modulation of adipose tissue function, lipid metabolism regulation or glycemic homeostasis, among others. But new mechanisms that could link NAFLD and ECV are emerging. The synthesis of ketone bodies in the liver is closely related to the cardiovascular system function. Ketone bodies can provide up to 50% of energy required by specific tissues. Plasma concentration of β-hydroxybutyrate is a biomarker of NAFLD. Plasma β-hydroxybutyrate and acetoacetate levels are also inversely associated with endothelial injury.

Other biomarkers on endothelial damage like von Willebrand factor, ICAM, VCAM or coagulation factors (Factor VIII) can be used to stratify patients according to the risk of CVD. The improvement in the sensitivity, specificity and accuracy of scores such as FLI, HIS and FIB-4 and non-invasive techniques such as elastography allow the study of the relationship between liver disease and other comorbidities.

The aim is to evaluate the potential of NAFLD to stratify patients according to the risk of CVD and to investigate the molecular mechanisms linking NAFLD and CVD.

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Key information

Conditions

Non-Alcoholic Fatty Liver Disease Cardiovascular Diseases Digestive System Diseases Fatty Liver Liver Diseases

Age range

50 year–69 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Clínica Universidad de Navarra, Madrid, Spain

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About this study

The hypothesis is that the prevalence of NAFLD and its degree, evaluated with non-invasive techniques and biomarkers is an independent risk factor of cardiovascular disease and can be used in scoring systems to stratify patients according to CVD risk.

The specific objectives are:

O1) To define the association between NAFLD prevalence and degree and endothelial damage.

The investigators will use non-invasive methods to determine the presence and degree of NAFLD (FLI, echography, elastography, FIB-4, NAFLD score and Hepamet) and the investigators will compare plasma concentrations of endothelial damage biomarkers (Von Willebrand Factor, Factor VIII and Tissue Factor) among NAFLD degrees.

O2) To describe the role of hepatic ketogenic metabolism as mediator of endothelial damage.

The investigators will correlate plasma concentrations of β-hydroxybutyrate and keto acetone with plasma concentrations of biomarkers of endothelial damage.

O3) To compare the expression of genes and microRNAs involved in endothelial function and liver metabolism and inflammation biomarkers among groups.

Liver metabolism is strictly regulated through the regulation of the expression of genes encoding metabolic enzymes responsible for the metabolic reactions and transporters of intermediate metabolites. The expression of such genes also depends on epigenetic mechanisms like microRNAs. Thus, the investigators will compare the expression of a selected panel of genes and microRNAs in blood samples of participants according to the clinicopathological group. The investigators will measure circulating microRNAs in plasma and cellular genes and microRNAs in the cellular fraction of the blood samples.

O4) To determine the role of the microbiome as mediator of the link between NAFLD and CVD.

The investigators will collect fecal samples from participants, and the investigators will compare alpha diversity and composition of the gut microbiota of the volunteers of the different clinicopathological groups. The investigators will also carry out comparative metagenomic studies.

Objectives 1 to 4 will be developed through a cross-sectional study in the participants.

O5) To associate NAFLD with the incidence of CVD events or changes in endothelial damage biomarkers.

Recruited participants with or without prevalent CVD will be followed up for 5 years to evaluate if the prevalence of NAFLD is associated with the incidence of CVD major events (cardiovascular mortality, myocardial infarction, stroke or chest angina).

To develop this aim, the investigators will carry out a longitudinal cohort study for 5 years. Participants recruited in any of the 4 clinicopathological groups will be contacted annually for 5 years to collect clinical, lifestyle and anthropometrical data. They will be also submitted to usual care protocols for their pathologies. Clinical records will be checked to assess the incidence of CVD events.

The aim is to recruit 112 participants, men and women, 50-69 years old that will be segregated according to NAFLD and CVD status:

Group 1: no NAFLD, no prevalent CVD. Group 2: NAFLD, no prevalent CVD Group 3: no NAFLD, prevalent CVD Group 4: NAFLD, prevalent CVD No NAFLD is described as Fatty Liver Index (FLI) <30 or hepatic echography negative for liver steatosis if FLI >30 or FLI < 60, con SCORE2 < 5 %.

NAFLD is described as FLI > 60 or hepatic echography positive for liver steatosis if FLA>30 or FLI < 60, con SCORE2 > 5 %.

Prevalent CVD is defined according to ESC 2011 guidelines (chest angina, stroke, acute coronary syndrome or acute myocardial infarction).

Who can participate

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Men and women
  • 50-69 years old
  • With CVD stratification according to ESC 2011 guidelines.
  • With data to calculate NAFLD scores.

Exclusion criteria

Exclusion criteria

  • Type 1 or type 2 diabetes.
  • Taking hypoglycemic drugs.
  • Familiar hypercholesterolemia according to ESC criteria.
  • Congenital defects on lipid metabolism.
  • Taking hypolipidemic drugs targeting PCSK9.
  • Participating on other clinical trials.
  • Chronic renal disease with filtration rate < 30 ml/min (RCD degree 4 KDIGO).
  • Active cancer
  • Liver disease no NAFLD.
  • Von Willebrand disease or any other genetic condition with an impact on the plasma concentration of this biomarker.
  • Systemic autoimmune disease.
  • Uncapable of giving informed consent.
  • Any other physical or cognitive condition that could affect the participation in the study.

Treatment and study plan

Primary outcomes

  1. Endothelial damage

    Time frame: 5 years

    Measure of plasma concentration of Von Willebrand Factor in UI/dL

  2. Endothelial damage

    Time frame: 5 years

    Measure of plasma concentration of Factor VIII in UI/mL

  3. Endothelial damage

    Time frame: 5 years

    Measure of plasma concentration of Tissue Factor in ng/mL

Secondary outcomes

  1. Endothelial dysfunction

    Time frame: 5 years

    Measure of plasma concentration of ICAM and VCAM measured, both, in ng/mL

  2. Inflammatory status

    Time frame: 5 years

    Measure of plasma concentration of TNF-alpha, IL-1B and IL-6, measured in ng/mL

  3. Ketogenic metabolism

    Time frame: 5 years

    Measure of blood levels of beta-hydroxybutyrate

  4. Genomic profile

    Time frame: 5 years

    Measure of the relative expression, through Real-Time qPCR, of a panel of selected genes.

  5. MicroRNA profile

    Time frame: 5 years

    Measure of the relative expression, through Real-Time qPCR, of a panel of selected microRNAs.

  6. Microbiota diversity

    Time frame: 5 years

    Measure of alpha diversity and gut microbial composition through 16S sequencing of fecal samples.

  7. Microbiota functionality

    Time frame: 5 years

    Metagenomic analysis of microbiota genes by sequencing

  8. Cardiovascular disease incidence

    Time frame: 5 years

    Registration of major cardiovascular events (cardiovascular mortality, chest angina, accute myocardial infarction and stroke)

Sponsors and collaborators

Lead sponsor

IMDEA Food

Other

Collaborators

  • Clinica Universidad de Navarra, Universidad de Navarra
  • Hospital Central de la Defensa Gómez Ulla
  • Hospital HM Montepríncipe
  • Hospital Universitario 12 de Octubre
  • Sociedad Española de Arteriosclerosis

Registry information

Official study title

EndoNAFLD: Evaluation of the Relationship Between Fatty Liver Disease and Endothelial Damage in Patients at High Risk of Cardiovascular Disease

Acronym: Endo-NAFLD

Important dates

Study start
2024
Primary completion
2026
Study completion
2026
First posted
Apr 30, 2024
Registry last updated
Mar 25, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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