Global Reference Ranges - Mexico (GRR Mexico)

August 17, 2026 updated by: Perspectum

Global Reference Ranges (GRR) for Magnetic Resonance Imaging of Intra-abdominal Organs in Healthy Adults From Different Ethnic Groups - Mexico

The investigators aim to undertake the Global Reference Range Study (GRR) to establish a set of healthy adult reference values for measures of fibroinflammation, fat and size/volumes for the liver, and other abdominal and thoracic organs to assess, compare, and if necessary, propose ethnicity specific reference ranges for these measurements.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Detailed Description

The increasing rates of global obesity have been substantial in the adult population. Obesity is associated with metabolic syndromes and poses a major risk factor for diabetes, cardiovascular disease (CVD), and premature mortality. There has been a recent change in the definition and diagnosis of (clinical) obesity which emphasises that to identify early and effective treatments to prevent adverse clinical outcomes, it is essential to evaluate the health across multiple organs in the body. The advancements in multiorgan imaging to evaluate organ health is key in guiding risk stratification, diagnosis of organ-specific abnormalities and the development of targeted treatment strategies, and in recent years the indications for magnetic resonance imaging (MRI) have significantly expanded. In chronic liver diseases, the investigators have previously shown that multiparametric MRI of the liver has prognostic capabilities, and in the detection of treatment response. The investigator's multiorgan MRI method is a non-contrast MRI acquisition that allows for the measurement of fibro-inflammation and fat in and around the abdominal and thoracic organs, as well as the characterisation of organ size and volume and, specific to the heart, cardiac function in a single MRI scan. This approach has revealed persistence of multiorgan abnormalities across a range of disease indications including with people living with type 2 diabetes and lasting effects following COVID-19 infection. Many of the approaches for organ quantification have been adopted into routine clinical practice, for example liver MRI has been included in clinical guidelines for the assessment of MASH. However, as for all imaging modalities, being able to distinguish between healthy and diseased organs is critical - which relies on the availability of robust healthy reference ranges. Current MRI reference values have been predominantly based on white population datasets, whilst very limited values from other ethnic populations exist. There are well-known ethnic variations in healthy cardiovascular phenotypes based on echocardiographic studies. Consequently, there is a need to establish the healthy reference ranges across a range of ethnicities stratified against biological sex and age to allow for global comparison of MRI measures.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
50

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

Healthy volunteers, aged 18 years and over.

Description

Inclusion Criteria:

  • Male or female at least 18 years of age
  • Self-reported healthy
  • Willing and able to give informed consent for participation in the study
  • Willing and able to undergo an MRI

Exclusion Criteria:

  • History of cardiovascular disease as follows:

    • Myocardial infarction
    • Heart failure
    • Cardiomyopathy
    • Stroke
    • Hospital admission/discharge for unstable angina
    • Heart surgery
    • Unstable angina
    • Transient ischemic attack
  • Presence of CVD risk factors such as hypertension, hyperlipidaemia, Type 2 diabetes, BMI > 30 kg/m2, smoker (current/ex-smoker)
  • History of non-cardiac diseases related to the lungs, liver, kidneys, pancreas or spleen judged by the study investigator as therefore unsuitable to participate in the study
  • The participant may not enter the study if they have any contraindication to magnetic resonance imaging (standard MRI exclusion criteria including pregnancy, extensive tattoos, pacemaker, shrapnel injury, severe claustrophobia)
  • Any other cause, including a significant disease or disorder which, in the opinion of the investigator, may either put the participant at risk because of participation in the study, or may influence the participant's ability to participate in the study

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Reference intervals for liver cT1
Time Frame: 24 months
Measured using Perspectum's LiverMultiScan
24 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Reference intervals for liver PDFF, iron and volume
Time Frame: 24 months
Measured using Perspectum's LiverMultiScan
24 months
Reference intervals for pancreas T1 and PDFF
Time Frame: 24 months
Measured using Perspectum's CoverScan
24 months
Reference intervals for kidney cortical T1 and renal sinus fat volume (RSFV)
Time Frame: 24 months
Measured using Perspectum's CoverScan
24 months
Reference intervals for measures of body composition
Time Frame: 24 months
Measured using Perspectum's CoverScan
24 months
Reference intervals for cardiac volumes and function
Time Frame: 24 months
Measured using Perspectum's CoverScan
24 months
Reference intervals for spleen T1 and volume
Time Frame: 24 months
Measured using Perspectum's CoverScan
24 months
Reference intervals for lungs fractional change
Time Frame: 24 months
Measured using Perspectum's CoverScan
24 months
Reference intervals for biliary tree and pancreatic duct metrics
Time Frame: 24 months
Measured using Perspectum's CoverScan
24 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Perspectum

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 1, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
August 1, 2029

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
August 1, 2029

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 12, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 17, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 24, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
August 19, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 17, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • EC-554

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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