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Periodontal Disease in Rare Renal Disorders (PERIO-RA-RE) (PERIO-RA-RE)

24 juni 2026 bijgewerkt door: Stefan Lujinschi

Periodontal Inflammation in Rare Renal Disorders - A Cross-Sectional Controlled Observational Study Assessing the Burden and Phenotypes of Periodontal Disease

This study aims to evaluate the burden and phenotypic spectrum of periodontal disease in patients with rare kidney disorders (such as Alport syndrome, Fabry disease, and tuberous sclerosis complex) and systemic lupus erythematosus (SLE), compared with chronic kidney disease (CKD) controls and population controls.

This is a cross-sectional, case-control observational study. Participants will undergo a single structured evaluation including a full-mouth periodontal examination, a clinical questionnaire, and collection of relevant clinical and nephrological data.

The primary objective is to compare the prevalence of periodontitis across study groups. Secondary objectives include characterization of periodontal disease severity, prevalence of gingivitis and xerostomia, and identification of disease-specific oral phenotypes.

Exploratory analyses will assess associations between periodontal disease and clinical variables such as kidney function, proteinuria, and immunosuppressive exposure.

Studie Overzicht

Toestand

Werving

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

Periodontal disease is a chronic inflammatory condition associated with systemic inflammation and has been linked to chronic kidney disease (CKD) severity and outcomes. However, data regarding periodontal disease in rare kidney disorders remain limited.

Rare renal diseases such as Alport syndrome, Fabry disease, and tuberous sclerosis complex, as well as systemic lupus erythematosus (SLE), may present unique biological and treatment-related factors influencing periodontal health.

This study is a cross-sectional, controlled observational study designed to evaluate the prevalence and severity of periodontal disease in these populations.

Participants will be recruited from Fundeni Clinical Institute Adult Nephrology Department and general population sources. Each participant will undergo a single study visit including a standardized full-mouth periodontal examination performed by a calibrated dentist, a structured questionnaire, and extraction of clinical data from medical records.

The primary outcome is the prevalence of periodontitis, defined according to the 2018 classification of periodontal diseases. Secondary outcomes include measures of periodontal disease severity and associated oral conditions.

Statistical analyses will include descriptive statistics, group comparisons, and multivariable regression models adjusted for relevant confounders.

Studietype

Observationeel

Inschrijving (Geschat)

100

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studiecontact

Studie Locaties

  • Roemenië
      • Bucharest, Roemenië, 022328
        • Werving
        • Fundeni Clinical Institute
        • Contact:
        • Onderonderzoeker:
          • Stefan N Lujinschi, MD, PhD candidate
        • Hoofdonderzoeker:
          • Bahtiar Ismail, MD, PhD

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

  • Volwassen
  • Oudere volwassene

Accepteert gezonde vrijwilligers

Nee

Bemonsteringsmethode

Niet-waarschijnlijkheidssteekproef

Studie Bevolking

Adult participants will be recruited from the Adult Nephrology Department of the Fundeni Clinical Institute, as well as from associated rare disease follow-up programs and dental or clinical care settings.

The study population will include patients with Alport syndrome, Fabry disease, tuberous sclerosis complex, and systemic lupus erythematosus with renal involvement, as well as CKD controls with non-rare etiologies and non-CKD controls recruited from clinical or dental care settings.

Participants will be enrolled consecutively based on eligibility criteria.

Beschrijving

Inclusion Criteria:

  • Age ≥18 years
  • Ability to provide written informed consent
  • At least 10 natural teeth present

  • Belonging to one of the predefined study groups:

    1. Alport syndrome (genetically or clinically confirmed)
    2. Fabry disease (enzymatically or genetically confirmed)
    3. Tuberous sclerosis complex (according to established clinical or genetic criteria)
    4. Systemic lupus erythematosus defined according to the 2019 EULAR/ACR or SLICC 2012 classification criteria, with renal involvement defined by at least one of the following: [1] Biopsy-proven lupus nephritis, [2] Persistent proteinuria (>0.5 g/day or equivalent), [3] Active urinary sediment (hematuria and/or cellular casts) consistent with lupus nephritis
    5. Chronic kidney disease (CKD) of non-rare etiology: defined according to KDIGO criteria (eGFR <60 ml/min/1.73 m² and/or markers of kidney damage)
    6. Individuals without CKD, recruited from clinical or dental care settings as non-CKD controls

Exclusion Criteria:

  • Periodontal treatment within the last 6 months
  • Antibiotic therapy within the last 4 weeks
  • Pregnancy
  • Conditions precluding periodontal examination
  • Inability to comply with study procedures

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

Cohorten en interventies

Groep / Cohort
Interventie / Behandeling
Alport Syndrome
Patients with Alport syndrome confirmed by genetic testing or kidney biopsy
Ander: Observational assessment
Non-interventional observational assessment including periodontal examination and clinical data collection.
Fabry Disease
Patients with enzymatic or genetically confirmed Fabry disease
Ander: Observational assessment
Non-interventional observational assessment including periodontal examination and clinical data collection.
Tuberous Sclerosis Complex
Patients diagnosed with Tuberous Sclerosis Complex according to established clinical or genetic criteria
Ander: Observational assessment
Non-interventional observational assessment including periodontal examination and clinical data collection.
Systemic Lupus Erythematosus

Systemic lupus erythematosus defined according to EULAR/ACR 2019 classification criteria, with renal involvement defined by at least one of the following:

  • Biopsy-proven lupus nephritis
  • Persistent proteinuria (>0.5 g/day or equivalent)
  • Active urinary sediment (hematuria and/or cellular casts) consistent with lupus nephritis
Ander: Observational assessment
Non-interventional observational assessment including periodontal examination and clinical data collection.
CKD Controls
Patients with chronic kidney disease of non-rare etiology
Ander: Observational assessment
Non-interventional observational assessment including periodontal examination and clinical data collection.
Population Controls
Individuals without known chronic kidney disease
Ander: Observational assessment
Non-interventional observational assessment including periodontal examination and clinical data collection.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Prevalence of Periodontitis
Tijdsspanne: At the single study visit (baseline)
Prevalence of periodontitis defined according to the 2018 classification of periodontal diseases.
At the single study visit (baseline)

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Mean Probing Pocket Depth (PPD)
Tijdsspanne: At the single study visit (baseline)
Mean probing pocket depth (in millimeters) measured across all examined sites during full-mouth periodontal examination.
At the single study visit (baseline)
Mean Clinical Attachment Level (CAL)
Tijdsspanne: At the single study visit (baseline)
Mean clinical attachment level (in millimeters) measured across all examined sites during full-mouth periodontal examination.
At the single study visit (baseline)
Percentage of Sites with Probing Pocket Depth ≥6 mm
Tijdsspanne: At the single study visit (baseline)
Percentage of periodontal sites with probing pocket depth of 6 mm or greater, reflecting severe periodontal involvement.
At the single study visit (baseline)
Percentage of Sites with Bleeding on Probing (BOP)
Tijdsspanne: At the single study visit (baseline)
Percentage of periodontal sites exhibiting bleeding on probing during full-mouth periodontal examination, as a marker of gingival inflammation.
At the single study visit (baseline)
Prevalence of Gingivitis
Tijdsspanne: At the single study visit (baseline)
Proportion of participants with clinical signs of gingival inflammation without attachment loss, consistent with gingivitis.
At the single study visit (baseline)
Prevalence of Xerostomia
Tijdsspanne: At the single study visit (baseline)
Proportion of participants reporting subjective dry mouth symptoms or presenting clinical evidence of reduced salivary flow.
At the single study visit (baseline)
Presence of Disease-Specific Oral Findings
Tijdsspanne: At the single study visit (baseline)
Presence of oral manifestations associated with underlying systemic disease, such as gingival fibromas, mucosal lesions, or enamel defects.
At the single study visit (baseline)

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Stefan Lujinschi

Medewerkers

Institutul Clinic Fundeni

Onderzoekers

  • Studie stoel: Gener Ismail, Professor, MD, PhD, Fundeni Clinical Institute
  • Hoofdonderzoeker: Bahtiar Ismail, MD, PhD, Emergency University Hospital Bucharest

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Werkelijk)

4 mei 2026

Primaire voltooiing (Geschat)

31 december 2027

Studie voltooiing (Geschat)

31 december 2027

Studieregistratiedata

Eerst ingediend

3 mei 2026

Eerst ingediend dat voldeed aan de QC-criteria

3 mei 2026

Eerst geplaatst (Werkelijk)

8 mei 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

26 juni 2026

Laatste update ingediend die voldeed aan QC-criteria

24 juni 2026

Laatst geverifieerd

1 juni 2026

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • 12796 (Andere identificatie: Fundeni Clinical Institute Ethical Committee)
  • PERIO-RA-RE_1 (Andere identificatie: Fundeni Clinical Institute - Adult Nephrology Department)

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

ONBESLIST

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

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