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Avatrombopag, an oral thrombopoietin receptor agonist: results of two double‐blind, dose‐rising, placebo‐controlled Phase 1 studies

Avatrombopag is an oral thrombopoietin receptor agonist that has been recently approved for treating thrombocytopenia in chronic liver disease patients needing invasive procedures. Clinical trials supporting this new treatment were guided by two double‐blind, dose‐rising, placebo‐controlled Phase 1...

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Autores principales: Kuter, David J., Allen, Lee F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6282597/
https://www.ncbi.nlm.nih.gov/pubmed/30203841
http://dx.doi.org/10.1111/bjh.15574
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author Kuter, David J.
Allen, Lee F.
author_facet Kuter, David J.
Allen, Lee F.
author_sort Kuter, David J.
collection PubMed
description Avatrombopag is an oral thrombopoietin receptor agonist that has been recently approved for treating thrombocytopenia in chronic liver disease patients needing invasive procedures. Clinical trials supporting this new treatment were guided by two double‐blind, dose‐rising, placebo‐controlled Phase 1 studies in healthy adults reported here that assessed safety, tolerability and pharmacokinetic profile of avatrombopag, and its effect on platelet counts. Subjects were randomised (2:1) in the single‐dose study (N = 63) to avatrombopag (1, 3, 10, 20, 50, 75 and 100 mg) or placebo, and in the multiple‐dose study (N = 29) to avatrombopag (3, 10 and 20 mg) or placebo daily for 14 days. There were no serious adverse events (AEs), dose‐limiting toxicities, deaths, AEs causing withdrawal, thromboses or liver function abnormalities. In both studies, avatrombopag peak concentration and exposure increased proportionally relative to dose; half‐life was 18–21 h and independent of dose, supporting once‐daily dosing. Effects on platelet counts depended on dose, concentration and treatment duration. Platelet count increases began 3–5 days post‐administration, with maximum changes of >370 × 10(9)/l over baseline with 20 mg daily after 13–16 days. These data support continued development of avatrombopag for treatment of other thrombocytopenic conditions and provide important guidance for the haematologist in the use of this new thrombopoietin receptor agonist.
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spelling pubmed-62825972018-12-11 Avatrombopag, an oral thrombopoietin receptor agonist: results of two double‐blind, dose‐rising, placebo‐controlled Phase 1 studies Kuter, David J. Allen, Lee F. Br J Haematol Platelets, Haemostasis and Thrombosis Avatrombopag is an oral thrombopoietin receptor agonist that has been recently approved for treating thrombocytopenia in chronic liver disease patients needing invasive procedures. Clinical trials supporting this new treatment were guided by two double‐blind, dose‐rising, placebo‐controlled Phase 1 studies in healthy adults reported here that assessed safety, tolerability and pharmacokinetic profile of avatrombopag, and its effect on platelet counts. Subjects were randomised (2:1) in the single‐dose study (N = 63) to avatrombopag (1, 3, 10, 20, 50, 75 and 100 mg) or placebo, and in the multiple‐dose study (N = 29) to avatrombopag (3, 10 and 20 mg) or placebo daily for 14 days. There were no serious adverse events (AEs), dose‐limiting toxicities, deaths, AEs causing withdrawal, thromboses or liver function abnormalities. In both studies, avatrombopag peak concentration and exposure increased proportionally relative to dose; half‐life was 18–21 h and independent of dose, supporting once‐daily dosing. Effects on platelet counts depended on dose, concentration and treatment duration. Platelet count increases began 3–5 days post‐administration, with maximum changes of >370 × 10(9)/l over baseline with 20 mg daily after 13–16 days. These data support continued development of avatrombopag for treatment of other thrombocytopenic conditions and provide important guidance for the haematologist in the use of this new thrombopoietin receptor agonist. John Wiley and Sons Inc. 2018-09-11 2018-11 /pmc/articles/PMC6282597/ /pubmed/30203841 http://dx.doi.org/10.1111/bjh.15574 Text en © 2018 The Authors. British Journal of Haematology published by John Wiley & Sons Ltd and British Society for Haematology This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
spellingShingle Platelets, Haemostasis and Thrombosis
Kuter, David J.
Allen, Lee F.
Avatrombopag, an oral thrombopoietin receptor agonist: results of two double‐blind, dose‐rising, placebo‐controlled Phase 1 studies
title Avatrombopag, an oral thrombopoietin receptor agonist: results of two double‐blind, dose‐rising, placebo‐controlled Phase 1 studies
title_full Avatrombopag, an oral thrombopoietin receptor agonist: results of two double‐blind, dose‐rising, placebo‐controlled Phase 1 studies
title_fullStr Avatrombopag, an oral thrombopoietin receptor agonist: results of two double‐blind, dose‐rising, placebo‐controlled Phase 1 studies
title_full_unstemmed Avatrombopag, an oral thrombopoietin receptor agonist: results of two double‐blind, dose‐rising, placebo‐controlled Phase 1 studies
title_short Avatrombopag, an oral thrombopoietin receptor agonist: results of two double‐blind, dose‐rising, placebo‐controlled Phase 1 studies
title_sort avatrombopag, an oral thrombopoietin receptor agonist: results of two double‐blind, dose‐rising, placebo‐controlled phase 1 studies
topic Platelets, Haemostasis and Thrombosis
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6282597/
https://www.ncbi.nlm.nih.gov/pubmed/30203841
http://dx.doi.org/10.1111/bjh.15574
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