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Eine Studie zum Testen eines Arzneimittels (Fitusiran) zur Vorbeugung von Blutungen bei Menschen mit schwerer Hämophilie, die zuvor eine vorbeugende Behandlung mit Emicizumab erhalten hatten

18. September 2026 aktualisiert von: Sanofi

Eine offene, einarmige Behandlungsstudie zur Untersuchung der Sicherheit und Verträglichkeit der Umstellung von Emicizumab auf die Fitusiran-Prophylaxe bei männlichen Teilnehmern im Alter von ≥ 18 Jahren mit schwerer Hämophilie A, mit oder ohne Inhibitoren

This is an exploratory, single group, Phase 4, study to assess treatment with fitusiran prophylaxis after switching from emicizumab prophylaxis.

This study aims to evaluate the safety and tolerability of switching to fitusiran after a transition period from the last dose of emicizumab. The study will be conducted in male participants with severe hemophilia A, with or without inhibitors, aged ≥12 years, who were previously receiving emicizumab prophylaxis.

Study details include:

  • The study duration will be up to approximately 28 months:

    • There will be an approximately 2-month screening period.
    • There will be an approximately 2-month period before fitusiran treatment starts (pre-fitusiran treatment period)
    • The fitusiran treatment duration will be up to 18-months (fitusiran treatment period)
    • The antithrombin (AT) follow-up (FU) period will be approximately 6 months after the last dose of fitusiran (during which the AT activity level will be monitored at approximately monthly intervals following the final fitusiran dose until AT activity levels return to at least 60%).
  • The study site visits are scheduled at monthly/ every 2 months intervals of 28 days (4 weeks) / 56 days (8 weeks), respectively, during the fitusiran treatment period.

Studienübersicht

Status

Rekrutierung

Bedingungen

Intervention / Behandlung

Studientyp

Interventionell

Einschreibung (Geschätzt)

20

Phase

  • Phase 4

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

  • Name: Trial Transparency email recommended (Toll free for US & Canada)
  • Telefonnummer: option 6 800-633-1610
  • E-Mail: Contact-US@sanofi.com

Studienorte

      • Taipei, Taiwan, 100
        • Rekrutierung
        • Investigational Site Number : 1580001
    • California
      • Los Angeles, California, Vereinigte Staaten, 90027
        • Rekrutierung
        • Children's Hospital Los Angeles- Site Number : 8400005
    • Mississippi
      • Flowood, Mississippi, Vereinigte Staaten, 39232
        • Rekrutierung
        • Southern Specialty Research- Site Number : 8400011

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

12 Jahre und älter (Kind, Erwachsene, Älterer Erwachsener)

Akzeptiert gesunde Freiwillige

Nein

Studienberechtigte Geschlechter

Männlich

Beschreibung

Inclusion Criteria:

  • Male participants must be ≥12 years of age inclusive, at the time of signing the informed consent

  • Diagnosis of severe congenital hemophilia A (FVIII < 1%) as evidenced by a central laboratory measurement at screening or documented medical record evidence.

    • Inhibitor titer of ≥0.6 BU/mL at Screening, or
    • Inhibitor titer of <0.6 BU/mL at Screening with medical record evidence of 2 consecutive titers ≥0.6 BU/mL, or
    • Inhibitor titer of <0.6 BU/mL at Screening with medical record evidence of anamnestic response.
  • Participants who are currently on the full labeled dose of emicizumab prophylaxis, irrespective of inhibitor/non-inhibitor status.

  • Signed informed consent/assent which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol.

Exclusion Criteria:

Participants are excluded from the study if any of the following criteria apply:

  • Known coexisting bleeding disorders
  • History of antiphospholipid antibody syndrome.
  • History of arterial or venous thromboembolism, atrial fibrillation, significant valvular disease, myocardial infarction, angina, transient ischemic attack, or stroke. Participants who have experienced thrombosis associated with indwelling venous access may be enrolled.
  • Presence of clinically significant liver disease
  • Current or prior participation in a fitusiran trial
  • Current or prior participation in a gene therapy trial
  • AT activity <60% at Screening, as determined by central laboratory measurement
  • Coexisting thrombophilic disorder - Hepatitis C virus antibody positive, except participants who have negative Hepatitis C viral load and no evidence of cirrhosis
  • Presence of acute hepatitis, ie, hepatitis A, hepatitis E.
  • Presence of acute or chronic hepatitis B infection
  • Known to be HIV positive with CD4 count <200 cells/μL.
  • Reduced renal function

The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: N / A
  • Interventionsmodell: Einzelgruppenzuweisung
  • Maskierung: Keine (Offenes Etikett)

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: fitusiran

The pre-fitusiran treatment period is defined as the transition period up to the first fitusiran administration. Participants will receive on demand or prophylactic treatment with intravenous clotting factor concentrates (IV CFCs) or bypassing agents (BPAs) from Month-2 until Day 1.

Fitusiran treatment period: Participants will receive subcutaneous (SC) fitusiran prophylaxis once every 2 months (Q2M) or once monthly (QM) from Day 1 until Month18.

Participants may receive IV antithrombin concentrate (ATIIIC) upon investigator's judgement.

AT FU period: Participants will be followed up until AT activity levels recover to at least 60% (per central laboratory).

In case of bleeding events participants will receive IV CFCs or BPAs. Participants may receive IV ATIIIC upon investigator's judgement.

Pharmaceutical form:Solution for injection-Route of administration:Subcutaneous (SC) injection

Andere Namen:
  • SAR439774, Qfitlia®

Pharmaceutical form: Solution for injection-Route of administration: Intravenous (IV) injection

Pharmaceutical form:Solution for injection-Route of administration:Intravenous (IV) injection

Pharmaceutical form:Solution for injection-Route of administration:SC injection

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Number of participants with Adverse events (AEs) during the fitusiran treatment
Zeitfenster: From Day 1 up to Month 4

Incidence, severity, and seriousness, of AEs occurred during fitusiran treatment period will be reported

From Day 1 up to Month 4

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
The peak thrombin generation (TG) - pre fitusiran treatment
Zeitfenster: From Month -2 up to Day 1

Central laboratory assessments (peak TG) will be reported for pre-fitusiran period

From Month -2 up to Day 1
The peak TG during fitusiran treatment
Zeitfenster: From Day 1 up to Month 4

Central laboratory assessments (peak TG) will be reported for fitusiran treatment period

From Day 1 up to Month 4
The antithrombin (AT) levels during pre-fitusiran treatment
Zeitfenster: From Month -2 up to Day 1

Central laboratory assessments (AT) will be reported for pre-fitusiran treatment period

From Month -2 up to Day 1
The AT levels during fitusiran prophylaxis
Zeitfenster: From Day 1 up to Month 4

Central laboratory assessments (AT) will be reported for fitusiran treatment

From Day 1 up to Month 4
Emicizumab concentrations in plasma
Zeitfenster: Up to Month 4 of fitusiran treatment

Emicizumab concentrations in plasma will be reported

Up to Month 4 of fitusiran treatment
Number of participants with AEs from Day 1 to Month 18 of fitusiran treatment
Zeitfenster: From Day 1 up to Month 18

Incidence, severity, and seriousness of AEs will be reported

From Day 1 up to Month 18
Change in participants' overall treatment satisfaction during the fitusiran treatment period assessed via the Treatment Satisfaction Questionnaire for Medication (TSQM-9) domain scores
Zeitfenster: From approximately Month -2 to Month 19 [end of study (EoS) visit]

The three domains of effectiveness, convenience, and global satisfaction will be reported

From approximately Month -2 to Month 19 [end of study (EoS) visit]
Participants' treatment preferences (via the Preference Questionnaire)
Zeitfenster: At Month 12

The Preference questionnaire Data will be reported

At Month 12
Change in adult participants' pain intensity during the fitusiran treatment period over time
Zeitfenster: From approximately Month - 2 to Month 19 (EoS) visit

The PROMIS (Patient-Reported Outcomes Measurement Information System) Pain Intensity 3a v2.0 consists of three items measuring the worst, average, and current intensity of pain with a recall period of 7 days. Each question has five response options ranging from one ('no pain') to five ('very severe').

Adult participants (age ≥ 18 years) will self-complete the PROMIS Pain Intensity 3a v2.0 questionnaire.

From approximately Month - 2 to Month 19 (EoS) visit
Change in adolescent participants' pain intensity during the fitusiran treatment period over time
Zeitfenster: From approximately Month - 2 to Month 19 (EoS) visit

The PROMIS Pediatric Numeric Rating Scale v.1.0 - Pain Intensity 1a consists of one item measuring the average intensity of pain with a recall period of 7 days. The question has ten response options ranging from one ('no pain') to ten ('worst pain').

Adolescent participants (age ≥12 years and <17 years) will self-complete the PROMIS Pediatric Pain Intensity 1a v.1.0.

From approximately Month - 2 to Month 19 (EoS) visit
Change in participants' physical functioning and physical activity during the fitusiran treatment period (via the International Physical Activity Questionnaire [IPAQ]) over time
Zeitfenster: From approximately Month - 2 to Month 19 (EoS) visit

Participants' physical functioning and physical activity data during the fitusiran treatment period will be collected via the International Physical Activity Questionnaire and reported

From approximately Month - 2 to Month 19 (EoS) visit
Change in participants' joint health (via the Hemophilia Joint Health Score [HJHS]) during the fitusiran treatment period over time
Zeitfenster: From approximately Month - 2 to Month 19 (EoS) visit

HJHS during the fitusiran treatment period will be reported

From approximately Month - 2 to Month 19 (EoS) visit
Annualized Bleeding Rate (ABR) while receiving fitusiran prophylaxis
Zeitfenster: From Month 4 up to Month 18 (14-month extension period)

The frequency of treated bleeding episodes will be reported

From Month 4 up to Month 18 (14-month extension period)

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Ermittler

  • Studienleiter: Clinical Sciences & Operations, Sanofi

Publikationen und hilfreiche Links

Die Bereitstellung dieser Publikationen erfolgt freiwillig durch die für die Eingabe von Informationen über die Studie verantwortliche Person. Diese können sich auf alles beziehen, was mit dem Studium zu tun hat.

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Tatsächlich)

1. März 2024

Primärer Abschluss (Geschätzt)

28. Mai 2028

Studienabschluss (Geschätzt)

30. Januar 2030

Studienanmeldedaten

Zuerst eingereicht

17. November 2023

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

17. November 2023

Zuerst gepostet (Tatsächlich)

24. November 2023

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

23. September 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

18. September 2026

Zuletzt verifiziert

1. September 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • SFY17741
  • 2022-502414-84 (Registrierungskennung: CTIS)
  • U1111-1280-7227 (Registrierungskennung: ICTRP)

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

JA

Beschreibung des IPD-Plans

Qualified researchers may request access to patient level data and related study documents including the clinical study report, study protocol with any amendments, blank case report form, statistical analysis plan, and dataset specifications. Patient level data will be anonymized and study documents will be redacted to protect the privacy of trial participants. Further details on Sanofi's data sharing criteria, eligible studies, and process for requesting access can be found at: https://vivli.org

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Ja

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .