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Mepolizumab and in Office-office Nasal Polypectomy in Patients With Chronic Rhinosinusitis (CRS). (MELYSA)

10 september 2026 bijgewerkt door: Instituto de Investigación Marqués de Valdecilla

Mepolizumab and in Office-office Nasal Polypectomy in Patients With Chronic Rhinosinusitis (CRS). A Three Arm Study.

This randomized, controlled multicenter trial will recruit patients aged 18 to 70 years with recurrent nasal polyposis requiring surgery and indication for biologic treatment according to EPOS 2020 guideline. Patients in the Mepolizumab arms will receive 100 mg of subcutaneous mepolizumab every 4 weeks for a total of 12 doses in addition to daily topical corticosteroid treatment.

All study procedures will be performed in five study visits and may take approximately 30 minutes. Clinical assessments include ifferent questionnaires and nasal endoscopy. This trial includes three treatment arms.

  1. Combined group (In-office nasal polypectomy group with mepolizumab): This group will undergone in-office nasal polypectomy and will receive Mepolizumab.
  2. Medical group (mepolizumab): This group will receive Mepolizumab.
  3. Surgical group (In-office nasal polypectomy): This group will undergone in-office nasal polypectomy. The main advantage is that it allows comparison of mepolizumab versus surgery and surgery/mepolizumab versus surgery + mepolizumab, providing more information on the most effective therapeutic approach.

The presence of adverse effects will be assessed in each treatment arm.

Studie Overzicht

Gedetailleerde beschrijving

Patients with chronic rhinosinusitis with nasal polyps (CRSwNP) and indication for biologic treatment according to the criteria of the EPOS2020 guideline.

Presence of bilateral polyps in a patient who had endoscopic sinus surgery (ESS) (except in cases where the patient is not fit for surgery) and three of the following criteria are required:

  1. Evidence of type 2 inflammation (tissue eos> 10/hpf* or blood eos>250, OR total IgE> 100).

    * Whenever possible histology from previous surgery should be reviewed to confirm if eosinophilic pathology. If the previous surgery was performed more than 2 years earlier, a blood eosinophil count is essential, as the previous biopsy data may not be relevant.

  2. Need for systemic corticosteroids or contraindication to systemic steroids (≥ 2 courses per yr, OR long term (>3 months)
  3. Significantly impaired quality of life (SNOT ≥ 40)
  4. Significant loss of smell (VAS).
  5. Diagnosis of comorbid asthma

Studietype

Ingrijpend

Inschrijving (Geschat)

75

Fase

  • Fase 4

Contacten en locaties

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

Studie Locaties

      • Barakaldo, Spanje
      • Jerez de la Frontera, Spanje
        • Werving
        • Hospital de Jerez
        • Contact:
      • Madrid, Spanje
        • Werving
        • Hospital Puerta del Hierro
        • Contact:
      • Salamanca, Spanje
      • Santander, Spanje, 39006
        • Werving
        • Hospital Universitario Marqués de Valdecilla
        • Contact:
      • Seville, Spanje
      • Valladolid, Spanje
        • Werving
        • Hospital de Valladolid
        • Contact:

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

Beschrijving

Inclusion Criteria:

  1. Participant 18 years of age or older
  2. Patients with a diagnosis of CRS with polyposis according to the criteria of the EPOS2020 guideline:

    Chronic rhinosinusitis with nasal polyps in adults is defined as presence of two or more symptoms, one of which should be either nasal blockage / obstruction / congestion or nasal discharge (anterior / posterior nasal drip); ± facial pain/pressure; ± reduction or loss of smell; for ≥12 weeks; and either endoscopic signs of nasal polyps, and/or CT changes: mucosal changes within the ostiomeatal complex and/or sinuses.

  3. Patients with indication for biologic treatment according to the criteria of the EPOS2020 guideline. Presence of bilateral polyps in a patient who had ESS and three of the following criteria are required:

    3.1. Evidence of type 2 inflammation (tissue eos> 10/hpf* or blood eos>250, OR total IgE> 100).

    * Whenever possible histology from previous surgery should be reviewed to confirm if eosinophilic pathology. If the previous surgery was performed more than 2 years earlier, a blood eosinophil count is essential, as the previous biopsy data may not be relevant.

    3.2. Need for systemic corticosteroids or contraindication to systemic steroids (≥ 2 courses per yr, OR long term (>3 months)

    3.3. Significantly impaired quality of life (SNOT ≥ 40)

    3.4. Significant loss of smell (≥7 VAS)

    3.5. Diagnosis of comorbid asthma

  4. Basal eosinophil count (BEC) ≥300 cells/µL for surgical naïve patients- or for those who have had surgery and have recurrence . The result of a previous analysis would be valid if it was obtained in a period of time not exceeding one year
  5. Patients have been informed and signed consent to participate in the study.

Exclusion Criteria:

  1. Any serious or uncontrolled systemic or psychiatric illness that prevents a correct cognitive or endoscopic assessment or does not advise participation in the study.
  2. Unilateral localized secondary CRS (odontogenic, fungal ball, tumor).
  3. Bilateral diffuse secondary CRS (cystic fibrosis; eosinophilic granulomatosis with polyangiitis-S. de Churg-Strauss-; granulomatosis with polyangiitis-S de Wegener-; primary ciliary dyskinesia; selective immunodeficiencies.
  4. Pregnancy/ breast feeding.
  5. Hypersensitivity to mepolizumab or its excipients.
  6. Patients unable to complete the questionnaire or follow prescribed treatment.
  7. Patients who are participating in another clinical trial related to polyposis or asthma.
  8. Previously documented failure with IL-5/IL-5 receptor biologics

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

  • Primair doel: Behandeling
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Parallelle opdracht
  • Masker: Geen (open label)

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Actieve vergelijker: surgical arm
This group of patients will undergo nasal polypectomy in the office and will not receive mepolizumab treatment.
polypectomy in the office and will not receive mepolizumab treatment.
Experimenteel: medical arm
This group of patients will not undergo in-office nasal polypectomy and will start treatment with mepolizumab directly after randomization.
will not undergo in-office nasal polypectomy and will start treatment with mepolizumab directly after randomization.
Experimenteel: combined arm
This group of patients will undergo in-office nasal polypectomy before starting treatment with mepolizumab. Mepolizumab treatment will be administered at the surgical procedure visit or within 48 hours after the polypectomy.
in-office nasal polypectomy before starting treatment with mepolizumab. Mepolizumab treatment will be administered at the surgical procedure visit or within 48 hours after the polypectomy.
Andere namen:
  • polypeptomy + mepolizumab

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
the efficacy of mepolizumab+polypectomy compared to mepolizumab or polypectomy, using the change from baseline in sinonasal outcome test (SNOT-22) total score at week 52.
Tijdsspanne: 12 moths
SNOT-22 total score ranges from 0 to 110, with higher scores indicating worse quality of life/more severe symptoms.
12 moths

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Change in nasal polyposis severity VAS score at V1, V6, V12.
Tijdsspanne: 1 month, 6 months and 12 months
VAS score ranges from 0 to 100, with higher scores indicating greater symptom severity.
1 month, 6 months and 12 months
Change in endoscopic nasal polyp score at V1, V6, V12
Tijdsspanne: 1 month, 6 months and 12 months
1 month, 6 months and 12 months
Improvement in individual VAS symptoms (rhinorrhea, mucus in throat, nasal blockage, and sense of smell), patient-reported outcomes at V1, V6, V12
Tijdsspanne: 1 month, 6 months and 12 months
1 month, 6 months and 12 months
Number of patients no longer requiring rescue systemic corticosteroid treatment throughout the first year after the first month of starting the study
Tijdsspanne: 12 months
12 months
Number of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs) Related to Mepolizumab and/or In-office Nasal Polypectomy
Tijdsspanne: 1 month, 2 months, 4 months, 6 months, 8 months, 10 months and 12 months
Adverse events collected at each study visit and classified as serious or non-serious per protocol definitions, and by causal relationship to treatment (unrelated, possible, probable) as assessed by the investigator.
1 month, 2 months, 4 months, 6 months, 8 months, 10 months and 12 months
Change from baseline in sinonasal outcome test (SNOT-22) total score at weeks 4 and 24
Tijdsspanne: 1 month and 12 months
1 month and 12 months

Medewerkers en onderzoekers

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

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)

31 december 2024

Primaire voltooiing (Geschat)

31 december 2026

Studie voltooiing (Geschat)

31 december 2026

Studieregistratiedata

Eerst ingediend

19 september 2025

Eerst ingediend dat voldeed aan de QC-criteria

10 september 2026

Eerst geplaatst (Werkelijk)

11 september 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

11 september 2026

Laatste update ingediend die voldeed aan QC-criteria

10 september 2026

Laatst geverifieerd

1 mei 2026

Meer informatie

Termen gerelateerd aan deze studie

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • MELYSA

Plan Individuele Deelnemersgegevens (IPD)

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

NEE

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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