Switch to Ofatumumab and Level of Immunoglobulins (SOLI)
This real-life study aims to describe IgG levels after switching from ocrelizumab 600 mg IV every 6 to 8 months in Patients with Multiple Sclerosis (PwMS) to ofatumumab 20 mg SC every month and showing a decreasing level of IgG during treatment by ocrelizumab in real life practice in France over 24 months of follow-up.
The primary objective is therefore to determine if the downward trend of IgG observed during ocrelizumab treatment is modified after a switch to ofatumumab, in PwMS treated during at least 18 months of ocrelizumab in real life practice, over 24 months of follow-up.
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: PATRICK VERMERSCH, Pr
- Telefonnummer: 06.33.38.32.60
- E-mail: patrick.vermersch@chu-lille.fr
Studiesteder
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Lille, Frankrig, 59000
- CHU de Lille
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Kontakt:
- Patrick VERMERSCH, Dr
- Telefonnummer: 06.33.38.32.60
- E-mail: patrick.vermersch@chu-lille.fr
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Prøveudtagningsmetode
Studiebefolkning
Beskrivelse
Inclusion Criteria:
- Adult patients (≥ 18 years old) who had been treated with ocrelizumab for a relapsing form of Multiple Sclerosis according to the ocrelizumab marketing authorization (MA) treatment regimen for at least 18 months.
- Patients with a decrease of IgG at a minimum of two consecutive dosages (around six months apart) during ocrelizumab treatment*.
- Patients already switched or switching from ocrelizumab to ofatumumab treatment (decision independent from the study*).
- Patients agreeing to participate to the study.
Able to provide their non-opposition
- At the discretion of the investigator, if a benefit for patients is expected based on their experience and depending on patient's characteristics
Exclusion Criteria:
- Patients with ocrelizumab dose spacing > 8 months in the last 18 months before switch
- Patient who underwent an immunoglobulin supplementation therapy within 18 months before the switch
- Ongoing or planned pregnancy
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Antal grupper/kohorter
Kohorter og interventioner
Gruppe / kohorteGruppe / kohorte |
Intervention / BehandlingIntervention / Behandling |
|---|---|
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Ofatumumab
Adult patients (≥18 years) with relapsing multiple sclerosis treated with ocrelizumab for at least 18 months and already switched or switching from ocrelizumab to ofatumumab treatment
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There is no treatment allocation.
Participants with MS that initiated treatment with ofatumumab (Kesimpta ®) as per neurologist practice and regardless of the study protocol.
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Tidsramme |
|---|---|
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Slope of serum immunoglobulin G (IgG) levels during ocrelizumab treatment period (minimum 18 months)
Tidsramme: 42 months
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42 months
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Slope of serum immunoglobulin G (IgG) levels during ofatumumab treatment period (24 months)
Tidsramme: 42 months
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42 months
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Age at baseline (years)
Tidsramme: Baseline
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Baseline
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Number and percentage of patients with stable serum IgG levels
Tidsramme: 24 months
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24 months
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Number of severe infections occurring during ocrelizumab treatment period prior to switch to ofatumumab
Tidsramme: 18 months
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18 months
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Slope of serum immunoglobulin M (IgM) levels during ocrelizumab treatment period (minimum 18 months)
Tidsramme: 24 months
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24 months
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Number of patients who discontinued ofatumumab before the end of follow-up
Tidsramme: 24 months
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24 months
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Number and type of adverse events (AEs) during ofatumumab follow-up period
Tidsramme: 24 months
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24 months
|
|
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Disease duration (years since diagnosis)
Tidsramme: Baseline
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Baseline
|
|
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Number and percentage of patients with increased serum IgG levels
Tidsramme: 24 months
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24 months
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Slope of serum immunoglobulin M (IgM) levels during ofatumumab treatment period (24 months)
Tidsramme: 24 months
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24 months
|
|
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Number of relapses per patient after switch to ofatumumab
Tidsramme: 24 months
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24 months
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Reasons for discontinuation of ofatumumab before the end of follow-up
Tidsramme: 24 months
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24 months
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Number and type of serious adverse events (SAEs) during ofatumumab follow-up period
Tidsramme: 24 months
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24 months
|
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Distribution of Expanded Disability Status Scale (EDSS) scores after switch to ofatumumab
Tidsramme: 24 months
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Expanded Disability Status Scale (EDSS): score range 0-10, where higher scores indicate greater neurological disability (worse outcome).
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24 months
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Sex distribution (male/female, percentage of patients)
Tidsramme: Baseline
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Baseline
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Distribution of Fatigue Severity Scale (FSS) scores after switch to ofatumumab
Tidsramme: 24 months
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Fatigue Severity Scale (FSS): score range 9-63, where higher scores indicate greater fatigue severity (worse outcome).
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24 months
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Distribution of Multiple Sclerosis Functional Composite (MSFC) scores after switch to ofatumumab
Tidsramme: 24 months
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Multiple Sclerosis Functional Composite (MSFC): standardized composite score (z-score), with higher scores indicating better neurological function (better outcome).
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24 months
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart (Anslået)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- 2024_0720
- 2025-A02557-42 (Anden identifikator: [ID-RCB number, ANSM])
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
Studerer et amerikansk FDA-reguleret lægemiddelprodukt
Studerer et amerikansk FDA-reguleret enhedsprodukt
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