Studie k testování léku (Fitusiran) pro prevenci krvácení u lidí s těžkou hemofilií, kteří dříve dostávali preventivní léčbu emicizumabem
Otevřená, jednoramenná léčebná studie ke zkoumání bezpečnosti a snášenlivosti přechodu z emicizumabu na profylaxi fitusiranem u mužských účastníků ve věku ≥ 18 let s těžkou hemofilií A, s inhibitory nebo bez nich
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:
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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%).
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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.
Přehled studie
Postavení
Postavení
Podmínky
Podmínky
Intervence / Léčba
Intervence / Léčba
Typ studie
Typ studie
Zápis (Odhadovaný)
Zápis
Fáze
Fáze
- Fáze 4
Kontakty a umístění
Studijní kontakt
Studijní kontakt
- Jméno: Trial Transparency email recommended (Toll free for US & Canada)
- Telefonní číslo: option 6 800-633-1610
- E-mail: Contact-US@sanofi.com
Studijní místa
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California
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Los Angeles, California, Spojené státy, 90027
- Nábor
- Children's Hospital Los Angeles- Site Number : 8400005
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Mississippi
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Flowood, Mississippi, Spojené státy, 39232
- Nábor
- Southern Specialty Research- Site Number : 8400011
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Taipei, Tchaj-wan, 100
- Nábor
- Investigational Site Number : 1580001
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Kritéria účasti
Kritéria způsobilosti
Kritéria způsobilosti
Věk způsobilý ke studiu
Přijímá zdravé dobrovolníky
Pohlaví způsobilá ke studiu
Popis
Inclusion Criteria:
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Male participants must be ≥12 years of age inclusive, at the time of signing the informed consent
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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.
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Participants who are currently on the full labeled dose of emicizumab prophylaxis, irrespective of inhibitor/non-inhibitor status.
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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.
Studijní plán
Jak je studie koncipována?
Detaily designu
- Primární účel: Léčba
- Přidělení: N/A
- Intervenční model: Přiřazení jedné skupiny
- Maskování: Žádné (otevřený štítek)
Počet zbraní
Zbraně a zásahy
Skupina účastníků / ArmSkupina účastníků / Arm |
Intervence / LéčbaIntervence / Léčba |
|---|---|
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Experimentální: 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
Ostatní jména:
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 |
Co je měření studie?
Primární výstupní opatření
Primární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
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Number of participants with Adverse events (AEs) during the fitusiran treatment
Časové okno: From Day 1 up to Month 4
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Incidence, severity, and seriousness, of AEs occurred during fitusiran treatment period will be reported |
From Day 1 up to Month 4
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Sekundární výstupní opatření
Sekundární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
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The peak thrombin generation (TG) - pre fitusiran treatment
Časové okno: From Month -2 up to Day 1
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Central laboratory assessments (peak TG) will be reported for pre-fitusiran period |
From Month -2 up to Day 1
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The peak TG during fitusiran treatment
Časové okno: From Day 1 up to Month 4
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Central laboratory assessments (peak TG) will be reported for fitusiran treatment period |
From Day 1 up to Month 4
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The antithrombin (AT) levels during pre-fitusiran treatment
Časové okno: From Month -2 up to Day 1
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Central laboratory assessments (AT) will be reported for pre-fitusiran treatment period |
From Month -2 up to Day 1
|
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The AT levels during fitusiran prophylaxis
Časové okno: From Day 1 up to Month 4
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Central laboratory assessments (AT) will be reported for fitusiran treatment |
From Day 1 up to Month 4
|
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Emicizumab concentrations in plasma
Časové okno: Up to Month 4 of fitusiran treatment
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Emicizumab concentrations in plasma will be reported |
Up to Month 4 of fitusiran treatment
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Number of participants with AEs from Day 1 to Month 18 of fitusiran treatment
Časové okno: From Day 1 up to Month 18
|
Incidence, severity, and seriousness of AEs will be reported |
From Day 1 up to Month 18
|
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Change in participants' overall treatment satisfaction during the fitusiran treatment period assessed via the Treatment Satisfaction Questionnaire for Medication (TSQM-9) domain scores
Časové okno: From approximately Month -2 to Month 19 [end of study (EoS) visit]
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The three domains of effectiveness, convenience, and global satisfaction will be reported |
From approximately Month -2 to Month 19 [end of study (EoS) visit]
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Participants' treatment preferences (via the Preference Questionnaire)
Časové okno: At Month 12
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The Preference questionnaire Data will be reported |
At Month 12
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Change in adult participants' pain intensity during the fitusiran treatment period over time
Časové okno: From approximately Month - 2 to Month 19 (EoS) visit
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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
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Change in adolescent participants' pain intensity during the fitusiran treatment period over time
Časové okno: From approximately Month - 2 to Month 19 (EoS) visit
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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
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Change in participants' physical functioning and physical activity during the fitusiran treatment period (via the International Physical Activity Questionnaire [IPAQ]) over time
Časové okno: From approximately Month - 2 to Month 19 (EoS) visit
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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
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Change in participants' joint health (via the Hemophilia Joint Health Score [HJHS]) during the fitusiran treatment period over time
Časové okno: From approximately Month - 2 to Month 19 (EoS) visit
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HJHS during the fitusiran treatment period will be reported |
From approximately Month - 2 to Month 19 (EoS) visit
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Annualized Bleeding Rate (ABR) while receiving fitusiran prophylaxis
Časové okno: From Month 4 up to Month 18 (14-month extension period)
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The frequency of treated bleeding episodes will be reported |
From Month 4 up to Month 18 (14-month extension period)
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Spolupracovníci a vyšetřovatelé
Sponzor
Sponzor
Vyšetřovatelé
Vyšetřovatelé
- Ředitel studie: Clinical Sciences & Operations, Sanofi
Publikace a užitečné odkazy
Termíny studijních záznamů
Hlavní termíny studia
Začátek studia (Aktuální)
Začátek studia
Primární dokončení (Odhadovaný)
Primární dokončení
Dokončení studie (Odhadovaný)
Dokončení studie
Termíny zápisu do studia
První předloženo
První předloženo
První předloženo, které splnilo kritéria kontroly kvality
První předloženo, které splnilo kritéria kontroly kvality
První zveřejněno (Aktuální)
První zveřejněno
Aktualizace studijních záznamů
Poslední zveřejněná aktualizace (Aktuální)
Poslední zveřejněná aktualizace
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Naposledy ověřeno
Naposledy ověřeno
Více informací
Termíny související s touto studií
Další relevantní podmínky MeSH
Další identifikační čísla studie
Další identifikační čísla studie
- SFY17741
- 2022-502414-84 (Identifikátor registru: CTIS)
- U1111-1280-7227 (Identifikátor registru: ICTRP)
Plán pro data jednotlivých účastníků (IPD)
Plánujete sdílet data jednotlivých účastníků (IPD)?
Popis plánu IPD
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
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