NCT06923644

Brief Summary

Nutrition is very important to keep blood sugar levels balanced. If blood sugar levels are too high, it can lead to diseases such as cardiovascular disease and type 2 diabetes (T2DM). Therefore, adjusting what one eats, also called a diet or nutritional intervention, can help prevent these diseases. However, not everyone responds the same to a diet. In about 30% of people, a diet does not work as hoped. This can be due to various reasons, such as a person's metabolism, genetic predisposition, the composition of the food one eats, or the bacteria in the intestines. Everyday things like sleep, stress, and movement also play a role. The investigators used a computer model to classify people with overweight and obesity into groups based on these factors. The investigators call such a group a 'Metabolic Phenotype', or in short 'Metabotype'. Based on the Metabotype, a personalised diet was developed (personalised nutrition intervention) that may better suit each person's unique situation. The investigators hypothesize that a precision nutrition intervention, tailored to Metabotypes identified through unsupervised clustering (using the aforementioned computer model) of predefined, accurate features related to cardiometabolic health-specifically, tissue-specific glucose and lipid metabolism and detailed body composition-will enhance blood glucose homeostasis, reduce cardiometabolic risk, and improve adherence to the intervention and mental well-being, compared to population-based dietary guidelines. The present project will contribute to targeted and efficient precision-based dietary strategies for individuals at increased risk of T2DM.

Trial Health

77
On Track

Trial Health Score

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

Enrollment
240

participants targeted

Target at P75+ for not_applicable

Timeline
11mo left

Started Apr 2025

Typical duration for not_applicable

Geographic Reach
1 country

2 active sites

Status
recruiting

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

Study Progress54%
Apr 2025Apr 2027

First Submitted

Initial submission to the registry

February 7, 2025

Completed
2 months until next milestone

First Posted

Study publicly available on registry

April 11, 2025

Completed
12 days until next milestone

Study Start

First participant enrolled

April 23, 2025

Completed
1.9 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 1, 2027

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

April 1, 2027

Last Updated

January 20, 2026

Status Verified

January 1, 2026

Enrollment Period

1.9 years

First QC Date

February 7, 2025

Last Update Submit

January 15, 2026

Conditions

Keywords

Dietary intervention trialPrecision nutritionTissue-specific insulin resistanceBody compositionMetabotypingGlucose homeostasisCardiometabolic healthInsulin resistanceMetabolic phenotype

Outcome Measures

Primary Outcomes (1)

  • Matsuda Index

    The primary objective of this study is to evaluate the effect of a 12-month Metabotype-targeted diet (PN) versus a non-targeted diet (CN) on whole-body insulin sensitivity (Matsuda Index; marker of whole-body fasting and postprandial insulin sensitivity). This will include within group post-hoc testing. The primary outcome measure will be assessed by means of a 7-point oral glucose tolerance test (OGTT), and calculated as follows: \[10,000 / square root of \[fasting plasma glucose (mg/dL) × fasting insulin (mU/L)\] × \[mean glucose (mg/dL) x mean insulin (mU/L)\]\].

    Change from baseline at month 6 and month 12 following dietary intervention.

Secondary Outcomes (46)

  • Glucose tolerance

    Change from baseline at month 6 and month 12 following dietary intervention.

  • Disposition Index (DI)

    Change from baseline at month 6 and month 12 following dietary intervention.

  • HOMA-IR

    Change from baseline at month 6 and month 12 following dietary intervention.

  • Muscle insulin sensitivity (MISI)

    Change from baseline at month 6 and month 12 following dietary intervention.

  • Hepatic insulin resistance (HIRI)

    Change from baseline at month 6 and month 12 following dietary intervention.

  • +41 more secondary outcomes

Other Outcomes (3)

  • Baseline characteristics

    Baseline

  • Metabotype cluster

    Baseline, and change from baseline at month 6 and month 12 following dietary intervention.

  • Capillary Blood Samples (CBS)

    Baseline and following 12 month dietary intervention.

Study Arms (2)

Precision Nutrition Group (PN)

EXPERIMENTAL

For a total duration of 12 months, participants in the Precision Nutrition (PN) Group will follow a diet tailored to their Metabotype, which is hypothesised to be optimal for them.

Other: Optimal Metabotype-specific diet

Control Group (CN)

EXPERIMENTAL

For a total duration of 12 months, participants in the Control Group (CN) will be randomly assigned one of the diets optimised for a different Metabotype of the same sex, which is hypothesised to be suboptimal for them.

Other: Sub-optimal diet

Interventions

Following screening, baseline measurements, and determination of Metabotype, participants will be randomly assigned, using minimisation, to either the Precision Nutrition (PN) group or the Control (CN) group. The PN group will receive a diet hypothesised to be optimal for their specific Metabotype. All participants will adhere to their assigned diets for 12 months. Each Metabotype-specific diet will align with the Dutch Healthy Dietary Guidelines, while varying in macronutrient composition and quality.

Precision Nutrition Group (PN)

Participants randomised to the Control Group (CN), will be randomly assigned one of the two diets optimised for a different Metabotype of the same sex. The assigned CN Group diet will always have a macronutrient content and quality that is different than their hypothesised optimal diet. All diets will align with the Dutch Healthy Dietary Guidelines.

Control Group (CN)

Eligibility Criteria

Age40 Years - 75 Years
Sexall(Gender-based eligibility)
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Men and women with a BMI ≥25 to \<40 kg/m2
  • Classification possible to one of the investigational metabolic phenotypes according to the classification algorithm.
  • Weight stability for at least 3 months (+/- 3 kg)

You may not qualify if:

  • Diseases
  • (Pre-)diagnosis of type 1 or type 2 diabetes mellitus (i.e., FPG ≥ 7,0 mmol/L) and HbA1c ≥ 6,5% (48 mmol/mol)
  • Renal or hepatic malfunctioning (pre-diagnosis or determined based on ALAT and creatinine values)
  • Gastrointestinal diseases or abdominal surgery (allowed i.e.:
  • appendectomy, cholecystectomy)
  • Food allergies, intolerances (including gluten/lactose intolerance) and/or eating disorders interfering with the study
  • Cardiovascular diseases (e.g., heart failure) or cancer (e.g., noninvasive skin cancer allowed)
  • High systolic blood pressure (untreated \>160/100 mmHg, drug-regulated \>140/90 mmHg)
  • Diseases affecting glucose and/or lipid metabolism (e.g., pheochromocytoma, Cushing's syndrome, acromegaly)
  • Diseases with a life expectation shorter than 5 years
  • Major mental disorders
  • Other physical/mental conditions that may interfere with study outcomes
  • Medication
  • Medication known to interfere with study outcomes (e.g., PPAR-α or PPAR-γ agonists (fibrates), sulfonylureas, biguanides, α-glucosidaseinhibitors, thiazolidinediones, repaglinide, nateglinide, insulin, and chronic use of NSAIDs)
  • Use of certain anticoagulants other than acetylsalicylic acid
  • +22 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (2)

Maastricht University Medical Center, Department of Human Biology, NUTRIM Institute of Nutrition and Translational Research in Metabolism

Maastricht, 6200MD, Netherlands

RECRUITING

Wageningen University and Research, Division of Human Nutrition

Wageningen, 6700AA, Netherlands

RECRUITING

MeSH Terms

Conditions

ObesityOverweightGlucose IntoleranceDiabetes Mellitus, Type 2Insulin Resistance

Condition Hierarchy (Ancestors)

OvernutritionNutrition DisordersNutritional and Metabolic DiseasesBody WeightSigns and SymptomsPathological Conditions, Signs and SymptomsHyperglycemiaGlucose Metabolism DisordersMetabolic DiseasesDiabetes MellitusEndocrine System DiseasesHyperinsulinism

Study Officials

  • Ellen E Blaak, Prof. Dr. Ir.

    Maastricht University Medical Center

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

February 7, 2025

First Posted

April 11, 2025

Study Start

April 23, 2025

Primary Completion (Estimated)

April 1, 2027

Study Completion (Estimated)

April 1, 2027

Last Updated

January 20, 2026

Record last verified: 2026-01

Data Sharing

IPD Sharing
Will share

Once the corresponding article is published and/or the project is finished, (part of) our metadata will be accessible for further research and verification. Interested researchers can submit a data request by means of a synopsis, this is necessary to prevent inappropriate use of data. A designated committee consisting of the project leader and the steering committee will decide on the approval of future requests (synopsis) for data access. At a minimum, the synopsis must show that the applicant's intended purpose and method of operation comply with the PRECINUT Data Terms of Use (see also access criteria), which have yet to be determined by the steering committee. Study participants will be provided with a participant number, which can only be connected to personal data via the informed consent form. The informed consent forms are only stored at the respective research sites separately (MUMC+/WUR), and will not be shared.

Shared Documents
STUDY PROTOCOL, SAP
Time Frame
Possibly, based on guidelines in the consortium agreement, the steering committee could agree on an embargo period, which could delay the accessibility of (part of) the data. One of the reasons for delayed data access may be the application for IP rights and marketing of the acquired knowledge (by consortium partners).
Access Criteria
* The purpose of data access is limited to scientific purposes and may not be used for commercial purposes; * The purpose of the data request must be of public interest. Research questions of the data access applicant must be related to the research topic of the original study; * The dataset must not be linked to an external dataset (for privacy reasons); * Use of the dataset is not infinite, but only for a predetermined period, a time interval required for analyses of data up to a maximum of 3 months (and once for this specific question by this applicant); * A small fee is requested for (re)use of the data. This fee will cover the additional costs associated with assessing the request and distributing the data; * If the purpose of data access is scientific publication, agreements must be made in advance on co-authorship, access to the final manuscript and the possibility of stopping the publication of data up to a period of 3 months if no agreement can be reached between parties.

Locations