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Gout DiseaseMETABOGOUTNCT07343336

Landscape of Gout in French Polynesia.

An observational study of Gout Disease and Metabolic Diseases, run by Lille Catholic University at 6 sites in French Polynesia.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

The aim of this research is to characterise the genetic and molecular landscape of gout, inflammation and metabolic diseases, as well as the associated molecular, anthropomorphic and pathological characteristics. Read more about this study

Who is it for?
Ages 18 to 75 yearsHealthy volunteers can take part
Conditions the study is for
Gout Disease, Metabolic Diseases, Inflammation
What is being tested?
Epidemiological study and Blood and urine tests
How many people
2,750 participants
Where
6 sitesFrench Polynesia
Study dates
2 Sep 2025to Sep 2027
Phase
Observational
Are there results?
Not yet: the study is under way

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 75 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Study population: General population group: Participants will be recruited by general practitioners or study nurses during consultations in community-based practices. The objective is to include a representative general population sample, with no specific reason for consultation required or excluded. Gout group: Patients will be recruited at the Rheumatology Clinic of the Taaone Hospital Center (CHT) in Papeete when presenting with gout symptoms, either tophaceous gout or an acute flare within the previous 48 hours. 2021 follow-up group: Participants from the TOPATA study conducted in 2021 will be recontacted by telephone to assess willingness to participate, followed by an in-person inclusion visit. Only individuals currently living in Tahiti will be contacted. Nurses will be responsible for recruitment, biological sample collection, physical measurements, and questionnaire administration.

Who may be able to join

  • All participants:
  • Age between 18 and 75 years old inclusive
  • Signature of informed consent
  • Fasting for the collection of biological samples
  • Declared Polynesian ancestry
  • Affiliated to a social security scheme
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  • General population group :
  • Not having participated to the 2021 TOPATA study
  • Visiting a general practitioner (for whatever reason)
  • Gout Group :
  • Managed at the rheumatology clinic of the Taaone Hospital Centre (CHT) in Papeete by Dr Baptiste Gérard.
  • Tophaceous gout sub-group:
  • Present with tophaceous gout.
  • Gout crisis subgroup:
  • Be within 48 hours of the onset of a gout attack
  • Agree to return 1 week after inclusion for the second blood and urine sample.
  • 2021 follow-up group:
  • To have been included in the TOPATA study in 2021
  • Have taken the genetic and biological samples that generated the genetic and serum urate data for the 2021 study
  • Have hyperuricaemia without signs of gout OR without hyperuricaemia or gout at the time of inclusion in TOPATA

Who cannot join

  • All participants :
  • Refusal or inability to understand or give consent
  • Physical inability to follow and respect the protocol
  • 1st degree relative*,
  • Person under guardianship or trusteeship
  • Pregnant or breast-feeding woman
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  • If several relatives from the same household are eligible to participate, only one person may be included in the study. The choice is left to the discretion of the investigator or the first person met. However, both members of a couple (e.g. husband and wife) may participate.
  • General population group :
  • Unable to return for sampling if required.
  • Gout group :
  • Person wearing a knee prosthesis
  • People suffering from other inflammatory rheumatic diseases

Trial locations and contacts

6 sites in 1 country. Contact the study team or a site near you to ask about taking part.

6 sites in 1 country

French Polynesia6 sites, 6 recruiting
  • Medical Office Dr Antoine Scuiller

    Faa'a, 98702

    Antoine Scuiller, +689 87 29 99 11, taoteantoine@gmail.com

    Recruiting
  • Medical Office Dr Cedric Gueguen

    Papeete, 98713

    Cedric Gueguen, +689 89 51 10 50, Docteur.cedricgueguen@gmail.com

    Recruiting
  • Medical Office Dr Voradeth Nouanesengsy

    Papeete, 98714

    Voradeth Nouanesengsy, +689 89 52 59 17, taotevoradeth@gmail.com

    Recruiting
  • CH de Polynesie Française Papeete

    Pirae, 98716

    Baptiste Gerard, +689 40 48 62 62, bap.gerard@gmail.com

    Not yet recruiting
  • Medical Office Dr Nanethida Nouanesengsy

    Pirae, 98716

    Nanethida Nouanesengsy, +689 87 23 67 12, docteurnane@gmail.com

    Recruiting
  • Medical Office Dr Raphael Habib

    Pirae, 98716

    Raphael Habib, +689 40 85 13 23, raphaelhabib@hotmail.fr

    Recruiting

About this study

Official title: FENUA-METABOGOUT : Genetic Landscape of Gout, Inflammation and Metabolic Diseases in French Polynesia.

The aim of this research is to characterise the genetic and molecular landscape of gout, inflammation and metabolic diseases, as well as the associated molecular, anthropomorphic and pathological characteristics.

Read the detailed description

Recent work by the GHICL has highlighted the imminent public health problem represented by gout and hyperuricaemia in French Polynesia, with gout affecting around 15% and hyperuricaemia 71.6% of the adult population.

Hyperuricaemia is defined as a serum urate level above the saturation point, leading to its crystallisation under biological conditions. It is generally accepted that hyperuricaemia (HU) begins at 6.0 mg/dL (360 µmol/L).

The best-known consequence of hyperuricaemia is the development of gout, which results from the inflammatory response to the presence of monosodium urate (MSU) crystals in and around the joints. The factors modulating the deposition of MSU crystals in HU are poorly understood and a potential genetic contribution is unknown. It is known that the inflammatory response to the presence of MSU crystal deposits causing gout flares is mediated by activation of the NLRP33 inflammasome, but there is significant variability in this inflammatory response within the same individual (irregular recurrence of flares), and between individuals. The exceptionally high prevalence of HU that have been identified in French Polynesia represents a major health burden, as hyperuricaemia and gout are associated with many other cardiometabolic diseases.

For example, hyperuricaemia, BMI and type 2 diabetes are all associated with the risk of gout. The association between gout and cardiovascular events is also well known, and is thought to be mediated by a persistent inflammatory state. These data are particularly relevant in the context of French Polynesia where, in addition to high rates of gout and HU, a prevalence of obesity of over 40% (BMI >30kg/m2) and a prevalence of diabetes (based on HBA1c measurements) of over 13% was previously identified by the same team.

This last point is particularly striking as the prevalence of diabetes based on self-reported diagnosis was only 7%, indicating that many people are probably undiagnosed and therefore untreated. A better understanding not only of the mechanism and causal link between these conditions and risk factors, but also of the genetic basis of the disease, could lead to the development of therapies and to the improvement in diagnosis. This is particularly crucial in French Polynesia, where hyperuricaemia and its pathological effects on cardiometabolic health affect a large proportion of the adult population.

Here a multi-pronged approach to take advantage of a previous study named 'TOPATA' (NCT04812886) performed previously in French Polynesia, is proposed. The idea is to expand the existing cohort, in order to identify the genetic effectors contributing to the high rates of metabolic diseases previously observed, and to track the longitudinal impacts of HU.

Being tested
Epidemiological study, Blood and urine tests
Keywords
Gout disease, metabolic disease, inflammation
Medical subject headings
Metabolic Diseases, Inflammation

What participants receive

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

  • Epidemiological studyOther

    Collection of sociodemographic data, collection of treatment data, standard and clinical ophthalmological examination, physical and biological measurements, clinical characteristics specific to chronic and metabolic diseases, questionnaires (gout questionnaire, health assessment questionnaire (HAQ-II), EuroQol (EQ)-5D-5L, joint pain, state of health, diet and physical activity, access to care, addictions, sleep quality, pain scale (EVA), personal and family history) will be performed.

  • Blood and urine testsDiagnostic test

    Collection of blood and urine samples for genetic, biochemical, omics, and biobank analyses, in order to characterize cardiometabolic health markers will be performed.

Study groups in NCT07343336
Study groupRoleWhat they receive
General Population GroupPatients aged between 18 and 75 years old who did not take part in the TOPATA study in 2021 and who visit their general practitioner for a consultation (for whatever reason)
Receives: Other: Epidemiological study; Diagnostic Test: Blood and urine tests
Gout GroupPatients aged between 18 and 75 years old who are treated at the rheumatology clinic of the Taaone Hospital Centre (CHT) in Papeete by Dr Baptiste Gérard. * There is a tophaceous gout subgroup: patients with tophaceous gout. * And a gout attack subgroup: patients presenting with a gout crisis.
Receives: Other: Epidemiological study; Diagnostic Test: Blood and urine tests
Follow-up group 2021Patients aged between 18 and 75 years old who were included in the TOPATA study in 2021 and for whom genetic and biological samples during the 2021 study were taken. Patients must have had hyperuricaemia without signs of gout OR without hyperuricaemia or gout at the time of inclusion in the 2021 TOPATA study.
Receives: Other: Epidemiological study; Diagnostic Test: Blood and urine tests

What is being measured

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

  1. GWAS-identified associations between population-enriched genetic variants and health-related traits

    Effect estimates (odds ratios or beta coefficients) for statistically significant associations between population-enriched genetic variants and predefined health-related traits identified through GWAS.

    Measured: 12 month

Secondary outcomes (9)
  1. Multiple correlation between gout, hyperuricemia, type 2 diabetes and obesity

    Anthropometric and biological characteristics of gout, hyperuricemia, type 2 diabetes, and obesity will be assessed, and comorbidity associations analyzed using multivariate logistic regression. Measurements will include waist and hip circumferences, blood pressure, muscle properties by myotonometry, lower-limb strength via chair stand test, and handgrip strength. Blood analyses will assess lipid profile, liver function, inflammation, renal function and metabolism, glucose metabolism, and complete blood count. Urine analyses will also be performed.

    Measured: 12 month

  2. Incidence rate of gout or HU in French Polynesia between 2021 and 2025

    Incidence rate of gout or HU in French Polynesia between 2021 and 2025 in a sample of participants in the 2021 cohort with asymptomatic HU and no gout.

    Measured: 4 years

  3. Proportion of each type of urate-lowering therapy prescribed annually between 2019 and 2025

    Breakdown of types of THU prescribed between 2019 and 2025 based on the database of healthcare claims submitted to the Caisse de Prévoyance Sociale (CPS)

    Measured: 4 years

  4. Incidence of major adverse cardiovascular events (MACE) in patients with gout, diabetes, or obesity

    Occurrence of MACE related to gout, diabetes or obesity on the Healthcare Claims Database (HCD).

    Measured: 12 month

  5. Determinants of progression from asymptomatic hyperuricemia (in 2021) to gout (in 2025)

    Factors influencing the transition from asymptomatic HU to gout will be sought among demographic, anthropomorphic and biological characteristics, comorbidities, current treatments, genetic profiles, gene expression, proteomic profiles and metabolomic profiles.

    Measured: 4 years

  6. Multiple correlation between metabolic changes and disease evolution

    Severe gout is defined by subcutaneous tophi. Clinical characteristics will be assessed, including disease features (age at onset, duration), topography (affected joints, mono-/polyarticular and axial involvement), number, duration, and severity of flares, serum uric acid, and presence, number, and size of tophi. Treatment history and response (urate-lowering therapy, flare management), comorbidities (cardiovascular disease, chronic kidney disease, metabolic syndrome, diabetes, obesity, hypertension), and lifestyle factors (diet, alcohol, physical activity) will also be recorded. Molecular and biological characterization will include genetic, transcriptomic, proteomic, and metabolomic analyses to identify biomarkers associated with disease severity and progression.

    Measured: 12 month

  7. Multiple correlation between molecular, clinical features and gout severity

    Severe gout is defined by subcutaneous tophi. Clinical characteristics will be evaluated, including disease features (age at onset, duration), topography (affected joints, mono-/polyarticular and axial involvement), number, duration, and severity of flares, serum uric acid, and presence, number, and size of tophi. Treatment history and response (urate-lowering therapy, flare management), comorbidities (cardiovascular disease, chronic kidney disease, metabolic syndrome, diabetes, obesity, hypertension), and lifestyle factors (diet, alcohol, physical activity) will also be recorded. Molecular and biological characterization will include genetic, transcriptomic, proteomic, and metabolomic analyses to identify biomarkers linked to disease severity and progression.

    Measured: 12 month

  8. Multiple correlation between gout attacks, clinical manifestations, gene expression, proteomic, and metabolomic profiles.

    Gout attack characteristics will be investigated, including attack location (affected joints, mono- or polyarticular), pain intensity (VAS or NRS), and inflammatory parameters (CRP, ESR if available, leukocyte count and differential). Synovial fluid analysis will include total and differential cell counts and presence of monosodium urate crystals. Triggering factors (diet, alcohol, trauma, infection, medications), associated acute conditions (infection, surgery, cardiovascular events), and flare duration and severity will be recorded. Treatments and clinical response will also be documented. Molecular characterization will include genetic analyses (urate transport and inflammation variants), gene expression, proteomic profiling of blood and synovial fluid, and metabolomic analyses of serum, urine, and synovial fluid to identify biomarkers of acute flares.

    Measured: 12 month

  9. Change in clinical and molecular characteristics of acute gout flares between baseline and 1-week visit

    Composite assessment of acute gout flares including clinical characteristics (attack location, mono- or polyarticular involvement, pain intensity measured by VAS or NRS, inflammatory markers [CRP, ESR if available, leukocyte count and differential]), synovial fluid findings (total and differential cell counts and presence of monosodium urate crystals), triggering factors and associated acute conditions, flare duration and severity, treatments administered and clinical response, and molecular biomarkers identified through genetic analyses, gene expression profiling, proteomic analyses, and metabolomic profiling of blood, urine, and synovial fluid.

    Measured: one week

Timeline

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

  1. First posted15 Jan 2026
  2. Study start2 Sep 2025
  3. Primary completionSep 2027 (estimated)
  4. Study completionSep 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
2,750 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07343336
Sponsor's protocol ID
RC-P00126
Acronym
METABOGOUT
Status last verified
Jan 2026
First submitted
1 Oct 2025
Last updated
15 Jan 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

An observational study of Gout Disease and Metabolic Diseases, run by Lille Catholic University at 6 sites in French Polynesia.

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 20 inclusion and 12 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: looking for participants now, as of the sponsor's last update on 15 Jan 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 6 sites in French Polynesia. 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?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Marie De Solere (+33 3 20 22 59 31, desolere.marie@ghicl.net), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

GWAS-identified associations between population-enriched genetic variants and health-related traits (time frame: 12 month). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
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 15 Jan 2026.

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