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Benralizumab Effectiveness in EGPA (BELONG-EGPA)

8. september 2026 opdateret af: European EGPA Study Group

Benralizumab Effectiveness in the LONG-term Real-life Setting in EGPA: The BELONG-EGPA Study

This is a multicenter, retro-prospective observational study evaluating the effectiveness and safety of benralizumab in adult patients with eosinophilic granulomatosis with polyangiitis (EGPA) in a real-world setting. The study will include patients treated with benralizumab 30 mg every 4 weeks at EGPA referral centers participating in the European EGPA Study Group. Clinical, laboratory, lung function, treatment, relapse, and safety data will be collected from medical charts at baseline and during follow-up up to 24 months.

Studieoversigt

Status

Rekruttering

Intervention / Behandling

Detaljeret beskrivelse

BELONG-EGPA is a multicenter, retro-prospective observational study conducted within centers belonging to the European EGPA Study Group. The study is designed to evaluate the long-term real-world effectiveness and safety of benralizumab in adult patients with eosinophilic granulomatosis with polyangiitis (EGPA).

The study population will include adult patients with EGPA who meet the 2022 American College of Rheumatology/European Alliance of Associations for Rheumatology classification criteria for EGPA or the criteria proposed in the MIRRA trial, and who receive benralizumab 30 mg every 4 weeks. Only patients with at least 3 months of available follow-up after starting benralizumab will be included.

Demographic, clinical, biological, lung function, and treatment-related data will be collected from medical charts through a standardized electronic case report form. Data will be collected at the start of benralizumab treatment and at 3, 6, 12, and 24 months of follow-up.

The primary effectiveness outcomes include achievement of complete response and partial response, changes in lung function measured by pre-bronchodilator FEV1, and disease relapses. Complete response is defined as no disease activity, with Birmingham Vasculitis Activity Score equal to 0, and an oral corticosteroid dose of 4.0 mg/day or less of prednisone, prednisolone, or equivalent. Partial response is defined as no disease activity with an oral corticosteroid dose greater than 4.0 mg/day.

Secondary outcomes include treatment persistence, oral corticosteroid tapering and discontinuation, effectiveness and safety in first-line patients compared with patients previously exposed to mepolizumab, outcomes after benralizumab dosage switching, and adverse events and serious adverse events during treatment.

Additional outcomes include changes in organ manifestations, discontinuation of disease-modifying antirheumatic drugs, changes in ANCA status, and variation in eosinophil count. All data will be anonymized and stored in a centralized database.

Undersøgelsestype

Observationel

Tilmelding (Anslået)

100

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Undersøgelse Kontakt Backup

Studiesteder

    • Italy
      • Florence, Italy, Italien, 50134

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Adult patients with eosinophilic granulomatosis with polyangiitis (EGPA) treated with benralizumab 30 mg every 4 weeks at EGPA referral centers participating in the European EGPA Study Group. Patients may be newly diagnosed or have relapsing or refractory EGPA, and will be included if at least 3 months of follow-up data after benralizumab initiation are available.

Beskrivelse

Inclusion Criteria:

  • Age 18 years or older.
  • Diagnosis of eosinophilic granulomatosis with polyangiitis (EGPA) according to the 2022 American College of Rheumatology/European Alliance of Associations for Rheumatology classification criteria or the criteria proposed in the MIRRA trial.
  • Treatment with benralizumab 30 mg every 4 weeks.
  • At least 3 months of available follow-up data after starting benralizumab.
  • Written informed consent for study participation and data collection.

Exclusion Criteria:

  • Age younger than 18 years.
  • No available follow-up data after starting benralizumab.
  • Follow-up after benralizumab initiation shorter than 3 months.
  • Lack of written informed consent, where required by local regulations.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Intervention / Behandling
Patients with EGPA treated with benralizumab
Adult patients with eosinophilic granulomatosis with polyangiitis (EGPA) receiving benralizumab 30 mg every 4 weeks in a real-world setting. Patients may be newly diagnosed or have relapsing or refractory EGPA and must have at least 3 months of available follow-up after starting benralizumab.
Benralizumab administered at a dose of 30 mg every 4 weeks in adult patients with eosinophilic granulomatosis with polyangiitis (EGPA) in a real-world setting. Patients may receive benralizumab as first-line biologic therapy or after previous exposure to mepolizumab. Treatment use, persistence, dosage changes, effectiveness outcomes, and safety events will be assessed during follow-up.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Complete Response
Tidsramme: Baseline and up to 24 months (at 3, 6, 12, 24 months)
Proportion of patients achieving complete response during follow-up. Complete response is defined as no disease activity (BVAS=0) and oral corticosteroid dose ≤4.0 mg/day.
Baseline and up to 24 months (at 3, 6, 12, 24 months)
Change in Lung Function
Tidsramme: Baseline, 3, 6, 12, and 24 months

Change in pre-bronchodilator forced expiratory volume in 1 second (FEV1) from baseline to each follow-up time point.

Unit of Measure: Milliliters

Baseline, 3, 6, 12, and 24 months
Disease relapse
Tidsramme: 3, 6, 12, and 24 months
Proportion of patients experiencing disease relapse after achieving complete response. Relapse is defined as active vasculitis, BVAS >0, and/or worsening asthma or ear-nose-throat manifestations leading to an increase in oral corticosteroid dose to >4.0 mg/day, initiation of a new immunosuppressive therapy, or hospitalization.
3, 6, 12, and 24 months
Partial response
Tidsramme: Baseline and up to 24 months (at 3, 6, 12, 24 months)
Proportion of patients achieving complete response during follow-up. Partial response is defined as no disease activity (BVAS=0) and oral corticosteroid dose >4.0 mg/day.
Baseline and up to 24 months (at 3, 6, 12, 24 months)

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Treatment persistence
Tidsramme: 3, 6, 12, and 24 months
Proportion of patients who continue benralizumab treatment, switch benralizumab dosage, or discontinue benralizumab for any reason.
3, 6, 12, and 24 months
Change in oral corticosteroid dose expressed as prednisone-equivalent dose
Tidsramme: Baseline, 3, 6, 12, and 24 months

The daily dose of each oral corticosteroid will be converted to prednisone-equivalent mg/day using standardized glucocorticoid equivalence factors.

Unit of Measure: mg/day of prednisone equivalent

Baseline, 3, 6, 12, and 24 months
Oral corticosteroid discontinuation
Tidsramme: 3, 6, 12, and 24 months
Proportion of patients who discontinue oral corticosteroid therapy during follow-up.
3, 6, 12, and 24 months
Overall clinical benefit in first-line versus post-mepolizumab patients
Tidsramme: Baseline, 3, 6, 12, and 24 months

A comparison of the overall clinical benefit in patients treated with benralizumab as first-line therapy versus patients switching to benralizumab following prior exposure to mepolizumab.

Unit of Measure: Percentage of participants

Baseline, 3, 6, 12, and 24 months
Effectiveness after benralizumab dosage switching
Tidsramme: 3 months after dosage switch
Assessment of complete response, partial response, and changes in lung function in patients switching benralizumab dosage from 30 mg every 4 weeks to 30 mg every 8 weeks or from 30 mg every 8 weeks to 30 mg every 4 weeks.
3 months after dosage switch
Adverse event rate
Tidsramme: 3, 6, 12, and 24 months
Proportion of patients experiencing at least one adverse event during benralizumab treatment, regardless of causal association with treatment.
3, 6, 12, and 24 months

Andre resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Changes in organ manifestations
Tidsramme: Baseline, 3, 6, 12, and 24 months
Change in the proportion of patients with active EGPA-related organ manifestations assessed separately from Birmingham Vasculitis Activity Score items.
Baseline, 3, 6, 12, and 24 months
DMARD discontinuation rate
Tidsramme: 3, 6, 12, and 24 months
Proportion of patients discontinuing disease-modifying antirheumatic drug treatment that was ongoing or newly started at baseline.
3, 6, 12, and 24 months
Change in ANCA positivity
Tidsramme: Baseline, 3, 6, 12, and 24 months
Change in the proportion of patients with positive ANCA testing and proportion of patients with ANCA negativization among those who were ANCA-positive at baseline.
Baseline, 3, 6, 12, and 24 months
Change in eosinophil count
Tidsramme: Baseline, 3, 6, 12, and 24 months
Change in blood eosinophil count from baseline to each follow-up time point.
Baseline, 3, 6, 12, and 24 months

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Efterforskere

  • Ledende efterforsker: Giacomo Emmi, MD/PhD, University of Trieste, Italy

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Hjælpsomme links

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

11. februar 2026

Primær færdiggørelse (Anslået)

11. februar 2027

Studieafslutning (Anslået)

11. februar 2028

Datoer for studieregistrering

Først indsendt

27. maj 2026

Først indsendt, der opfyldte QC-kriterier

8. september 2026

Først opslået (Faktiske)

11. september 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

11. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

8. september 2026

Sidst verificeret

1. september 2026

Mere information

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