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Safety and pharmaco...
Safety and pharmacokinetics of subcutaneously administered recombinant activated factor VII (rFVIIa).
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Tiede, A (author)
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Friedrich, Ute (author)
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Stenmo, C (author)
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Allen, G (author)
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Giangrande, P (author)
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Goudemand, J (author)
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Hay, C (author)
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- Holmström, Eva M (author)
- Karolinska Institutet,Lund University,Lunds universitet,Avdelningen för mikrobiologi, immunologi och glykobiologi - MIG,Institutionen för laboratoriemedicin,Medicinska fakulteten,Division of Microbiology, Immunology and Glycobiology - MIG,Department of Laboratory Medicine,Faculty of Medicine
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Klamroth, R (author)
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- Lethagen, Stefan (author)
- Lund University,Lunds universitet,Institutionen för kliniska vetenskaper, Malmö,Medicinska fakulteten,Department of Clinical Sciences, Malmö,Faculty of Medicine
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McKenzie, S (author)
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Miesbach, W (author)
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Negrier, C (author)
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Yuste, V J (author)
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- Berntorp, Erik (author)
- Lund University,Lunds universitet,Klinisk koagulationsmedicin, Malmö,Forskargrupper vid Lunds universitet,Clinical Coagulation, Malmö,Lund University Research Groups
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(creator_code:org_t)
- Elsevier BV, 2011
- 2011
- English.
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In: Journal of Thrombosis and Haemostasis. - : Elsevier BV. - 1538-7933 .- 1538-7836. ; 9, s. 1191-1199
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Abstract
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- Background: Recombinant factor VIIa (rFVIIa) is used to treat bleeds in hemophilia patients with inhibitors. A subcutaneous formulation could potentially improve its half-life and make it suitable for prophylactic treatment. Objectives: A study was conducted to determine the safety of subcutaneously administered rFVIIa in patients with hemophilia and the pharmacokinetic profile (including bioavailability). Patients/Methods: This was a multi-center, open-label, cross-over comparison of single doses of intravenous rFVIIa 90 μg/kg and a new formulation of rFVIIa for subcutaneous injection at dose levels of 45, 90, 180, 270 and 360 μg/kg. Sixty subjects (12 per dose cohort) with hemophilia A or B were enrolled. Results: Subcutaneously administered rFVIIa showed lower mean peak plasma concentrations and prolonged FVII activity (C(max) :0.44-5.16 IU/mL [across doses], t(1/2) :12.4 hours, t(max) :5.6 hours) compared with intravenously administered rFVIIa (C(max) :51.7 IU/mL, t(1/2) :2.7 hours, t(max) :<10 minutes). The absolute bioavailability of subcutaneous rFVIIa ranged from 21.1%-30.1% across dose levels. Dose proportionality was observed within a 2-fold dose increase but not across the full dose range. No thromboembolic events, drug-related serious adverse events, severe injection-site reactions or neutralizing antibodies were reported (primary endpoint). Mild and moderate injection-site reactions were more frequent with subcutaneous than with intravenous injections. Conclusion: This phase I clinical trial did not identify safety concerns of prolonged exposure to rFVIIa administered subcutaneously in single doses to hemophilia patients.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Kardiologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Cardiac and Cardiovascular Systems (hsv//eng)
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- art (subject category)
- ref (subject category)
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- By the author/editor
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Tiede, A
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Friedrich, Ute
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Stenmo, C
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Allen, G
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Giangrande, P
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Goudemand, J
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show more...
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Hay, C
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Holmström, Eva M
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Klamroth, R
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Lethagen, Stefan
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McKenzie, S
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Miesbach, W
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Negrier, C
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Yuste, V J
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Berntorp, Erik
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show less...
- About the subject
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Clinical Medicin ...
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and Cardiac and Card ...
- Articles in the publication
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Journal of Throm ...
- By the university
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Lund University
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Karolinska Institutet