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Pharmacokinetics of rFVIIIFc at Two Vial Strengths

16. Dezember 2020 aktualisiert von: Bioverativ Therapeutics Inc.

A Randomized, Open-Label, Crossover Study to Evaluate the Pharmacokinetics of 2 Vial Strengths of Recombinant Factor VIII Fc Fusion Protein (rFVIIIFc; BIIB031) in Previously Treated Subjects With Severe Hemophilia A

The primary objective of the study is to characterize the pharmacokinetics (PK) of rFVIIIFc administered at vial strengths of 1000 and 3000 IU in subjects with severe hemophilia A. The secondary objective of the study is to evaluate the safety of rFVIIIFc beyond the PK assessment for up to 6 months for a continued treatment period.

Studienübersicht

Status

Abgeschlossen

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

This is a randomized, open-label, crossover study during which each participant receives a single injection of rFVIIIFc from 2 different vial concentrations (PK assessment). After the PK assessment, participants are provided with rFVIIIFc for either prophylactic or episodic (on-demand) treatment for up to 6 months.

Studientyp

Interventionell

Einschreibung (Tatsächlich)

19

Phase

  • Phase 1

Kontakte und Standorte

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

Studienorte

  • Australien
      • Herston, Australien
        • Research Site
      • Perth, Australien
        • Research Site
  • Vereinigte Staaten
    • California
      • Los Angeles, California, Vereinigte Staaten
        • Research Site
    • Utah
      • Salt Lake City, Utah, Vereinigte Staaten, 84101
        • Research Site
    • Washington
      • Seattle, Washington, Vereinigte Staaten
        • Research Site
  • Vereinigtes Königreich
      • Basingstoke, Vereinigtes Königreich
        • Research Site
      • Cambridge, Vereinigtes Königreich
        • Research Site
      • London, Vereinigtes Königreich
        • Research Site

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

Key Inclusion Criteria:

  • Have severe hemophilia A
  • Previously treated subject, defined as having at least 150 documented prior exposure days to any recombinant and/or plasma-derived FVIII and/or cryoprecipitate products (other than any use of rFVIIIFc- study drug or commercial product) at Day 1. Fresh frozen plasma treatment must not be considered in the count for documented exposure days.
  • No history of a positive inhibitor test or clinical signs of decreased response to FVIII administrations. Family history of inhibitors will not exclude subjects.
  • No measurable inhibitor activity using the Nijmegen-modified Bethesda assay at Screening.
  • Platelet count ≥100,000 platelets/μL at screening
  • CD4 lymphocytes >200 mm3 if known as HIV antibody positive at screening.
  • Viral load of <400 copies/mL if known HIV antibody positive at screening.

Key Exclusion Criteria:

  • Subject is at high risk of bleeding during the 5-day period between the first and second injections for PK analyses, as per Investigator discretion.
  • Previous treatment with rFVIIIFc as study drug or commercial product.
  • Other coagulation disorder(s) in addition to hemophilia A.
  • History of hypersensitivity or anaphylaxis associated with any FVIII or IV immunoglobulin administration.
  • Currently taking (or likely to require during the study) acetylsalicylic acid (ASA), except for low-dose ASA as prophylaxis (other nonsteroidal anti-inflammatory drugs are permitted).
  • Concurrent systemic treatment with immunosuppressive drugs within 12 weeks prior to Day 1. Exceptions to this include: ribavirin for treatment of hepatitis C virus (HCV), and/or systemic steroids (a total of 2 courses of pulse treatments lasting no more than 7 days at a dose of ≤1 mg/kg within 12 weeks prior to Day 1) and/or inhaled steroids.

NOTE: Other protocol-defined inclusion/exclusion Criteria May Apply

Studienplan

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

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: Zufällig
  • Interventionsmodell: Crossover-Aufgabe
  • Maskierung: Keine (Offenes Etikett)

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: rFVIIIFc 1000 / 3000 PK Assessment

A single intravenous (IV) injection of rFVIIIFc 50 IU/kg at a strength of 1000 IU/vial followed by a single IV injection of rFVIIIFc 50 IU/kg at a strength of 3000 IU/vial.

Following the PK assessment, participants will receive either an episodic (on-demand) regimen with doses between 20 and 50 IU/kg based on the severity of the bleeding episode, or 1 of 2 prophylactic regimens: 50 IU/kg every 3 to 5 days or 65 IU/kg weekly. Participants will be allowed to switch from one regimen to another if approved by the Investigator.
Biologisch: rFVIIIFc
Administered as specified in the treatment arm.
Andere Namen:
  • Eloktat
  • rekombinantes Gerinnungsfaktor-VIII-Fc-Fusionsprotein
  • BIIB031
  • Efmoroctocog alfa
  • Elocta
  • antihemophilic factor [recombinant] FC fusion protein
Experimental: rFVIIIFc 3000 / 1000 PK Assessment

A single IV injection of rFVIIIFc 50 IU/kg at a strength of 3000 IU/vial followed by a single IV injection of rFVIIIFc 50 IU/kg at a strength of 1000 IU/vial.

Following the PK assessment, participants will receive either an episodic (on-demand) regimen with doses between 20 and 50 IU/kg based on the severity of the bleeding episode, or 1 of 2 prophylactic regimens: 50 IU/kg every 3 to 5 days or 65 IU/kg weekly. Participants will be allowed to switch from one regimen to another if approved by the Investigator.
Biologisch: rFVIIIFc
Administered as specified in the treatment arm.
Andere Namen:
  • Eloktat
  • rekombinantes Gerinnungsfaktor-VIII-Fc-Fusionsprotein
  • BIIB031
  • Efmoroctocog alfa
  • Elocta
  • antihemophilic factor [recombinant] FC fusion protein

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Area Under the Concentration-time Curve From Time Zero to Infinity (AUCinf) as Measured by Activated Partial Thromboplastin Time (aPTT) Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Area under the plasma concentration versus time curve (AUC) from time zero (pre-dose) to extrapolated infinite time (0 - ∞).
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Incremental Recovery (IR, K Value) as Estimated From the FVIII Activity Data Measured by aPTT Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
The rise in FVIII activity in IU/dL per unit dose administered in IU/kg (IR, K value), as estimated from the FVIII activity data.
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Maximum Activity (Cmax) as Measured by the aPTT Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Maximum measured concentration of rFVIIIFc.
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Half-life (t½) as Measured by aPTT Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Time required for the concentration of the drug to reach half of its original value.
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Clearance (CL) as Measured by the aPTT Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
The measure of the efficiency of the body to remove the drug and the unit is the volume of the plasma or blood cleared of drug per unit time.
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Volume of Distribution at Steady State (Vss) as Measured by the aPTT Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
The apparent volume of distribution at steady state. (Volume of distribution is defined as the theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired blood concentration of a drug.)
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Mean Residence Time (MRT) as Measured by the aPTT Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
The average time at which the number of absorbed molecules reside in the body, after single-dose administration.
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Time of Cmax (Tmax) as Measured by aPTT Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Time at which maximum activity (Cmax) is observed.
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Area Under the Curve to the Last Measurable Time Point (AUClast) as Measured by aPTT Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Area under the plasma concentration time-curve from zero to the last measured concentration.
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Terminal Exponential Rate Constant (Lambda Z) as Measured by aPTT Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
First order rate constant associated with the terminal portion of the curve (lambda z) .
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Percentage of AUCinf From the Last Data Point to Infinity (AUCext) as Measured by aPTT Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Percentage of AUCinf extrapolated from the last data point to infinity.
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Dose Normalized Area Under the Curve (DNAUC) as Measured by aPTT Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Dose normalized area under the FVIII activity-time curve.
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Terminal Exponential Volume of Distribution (Vz) as Measured by aPTT
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
The theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired plasma concentration of a drug.
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
AUCinf as Estimated From the FVIII Activity Data as Measured by Two-Stage Chromogenic Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Area under the plasma concentration versus time curve (AUC) from time zero (pre-dose) to extrapolated infinite time (0 - ∞).
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
IR, K Value as Measured by Two-Stage Chromogenic Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
The rise in FVIII activity in IU/dL per unit dose administered in IU/kg (IR, K value), as estimated from the FVIII activity data.
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Cmax as Measured by Two-Stage Chromogenic Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Maximum measured concentration of rFVIIIFc.
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
t½ as Measured by Two-Stage Chromogenic Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Time required for the concentration of the drug to reach half of its original value.
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
CL as Measured by Two-Stage Chromogenic Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
The measure of the efficiency of the body to remove the drug and the unit is the volume of the plasma or blood cleared of drug per unit time.
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Vss as Measured by Two-Stage Chromogenic Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
The apparent volume of distribution at steady state. (Volume of distribution is defined as the theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired blood concentration of a drug.)
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
MRT as Measured by Two-Stage Chromogenic Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
The average time at which the number of absorbed molecules reside in the body, after single-dose administration.
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Tmax as Measured by Two-Stage Chromogenic Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Time at which maximum activity (Cmax) is observed.
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
AUClast as Measured by Two-Stage Chromogenic Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Area under the plasma concentration time-curve from zero to the last measured concentration.
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Lambda Z as Measured by Two-Stage Chromogenic Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
First order rate constant associated with the terminal portion of the curve (lambda z).
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
AUCext as Measured by Two-Stage Chromogenic Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Percentage of AUCinf extrapolated from the last data point to infinity.
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
DNAUC as Measured by Two-Stage Chromogenic Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Dose normalized area under the FVIII activity-time curve.
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Vz as Measured by Two-Stage Chromogenic Clotting Assay
Zeitfenster: Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
The theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired plasma concentration of a drug.
Predose, 0.5 hour (+-5 minutes); 1 hour and 6 hours (+-10 minutes); and 24, 48, 72, and 96 hours (+-60 minutes) after each injection
Development of Inhibitor as Measured by the Nijmegen-Modified Bethesda Assay
Zeitfenster: Predose, Month 3, Month 6/early withdrawal. Additionally: If inhibitor suspected; at 10-15 EDs; 2-4 weeks prior to scheduled surgery; preoperatively on day of surgery; 1-2 weeks post-surgery; at last postoperative visit (last 2 for major surgery only)
An inhibitor test result ≥0.6 Bethesda units (BU)/mL, confirmed on 2 separate samples drawn 2 to 4 weeks apart, was considered positive. Both tests were to be performed by the central laboratory using the Nijmegen-modified Bethesda Assay. An exact 95% confidence interval (CI) for the proportion of subjects with a confirmed inhibitor was calculated using the Clopper-Pearson method for a binomial proportion. Percentage of participants with confirmed inhibitor development was summarized overall.
Predose, Month 3, Month 6/early withdrawal. Additionally: If inhibitor suspected; at 10-15 EDs; 2-4 weeks prior to scheduled surgery; preoperatively on day of surgery; 1-2 weeks post-surgery; at last postoperative visit (last 2 for major surgery only)

Mitarbeiter und Ermittler

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

Sponsor

Bioverativ Therapeutics Inc.

Ermittler

  • Studienleiter: Medical Director, Bioverativ Therapeutics Inc.

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

1. März 2014

Primärer Abschluss (Tatsächlich)

1. Oktober 2014

Studienabschluss (Tatsächlich)

1. Mai 2015

Studienanmeldedaten

Zuerst eingereicht

7. März 2014

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

7. März 2014

Zuerst gepostet (Schätzen)

11. März 2014

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

19. Dezember 2020

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

16. Dezember 2020

Zuletzt verifiziert

1. Mai 2017

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Zusätzliche relevante MeSH-Bedingungen

Andere Studien-ID-Nummern

  • 997HA307
  • 2013-003013-18 (EudraCT-Nummer)

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