Case Report: Successful Avatrombopag Treatment for Two Cases of Anti-PD-1 Antibody-Induced Acquired Amegakaryocytic Thrombocytopenia

Background: Anti-PD-1/PD-L1 immunotherapy has achieved impressive responses in multiple types of malignancies in recent years. However, immune-related adverse events (irAEs) occur and limit their continuous clinical use. Among these irAEs, acquired amegakaryocytic thrombocytopenia (AAT) is rare but...

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Main Authors: Xiaofang Tu, Ali Xue, Suye Wu, Mengmeng Jin, Pu Zhao, Hao Zhang
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-01-01
Series:Frontiers in Pharmacology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fphar.2021.795884/full
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author Xiaofang Tu
Ali Xue
Suye Wu
Mengmeng Jin
Pu Zhao
Hao Zhang
author_facet Xiaofang Tu
Ali Xue
Suye Wu
Mengmeng Jin
Pu Zhao
Hao Zhang
author_sort Xiaofang Tu
collection DOAJ
description Background: Anti-PD-1/PD-L1 immunotherapy has achieved impressive responses in multiple types of malignancies in recent years. However, immune-related adverse events (irAEs) occur and limit their continuous clinical use. Among these irAEs, acquired amegakaryocytic thrombocytopenia (AAT) is rare but often clinically serious, life-threatening and refractory to multiple treatment approaches.Case summary: We reported for the first time the successful treatment of avatrombopag in two cases of anti-PD1 antibody-induced AAT (in particular, one case had progressed to aplastic anemia), which was refractory or intolerant to glucocorticoids, ciclosporin, intravenous immunoglobulin (IVIG), recombinant human thrombopoietin (rh-TPO) and even TPO receptor agonist (TPO-RA) eltrombopag. To date, the two cases manifested as normal platelet counts and are independent of transfusion.Conclusion: Anti-PD1 antibody-induced AAT occurs with low frequency but is often serious and difficult to manage, for which this study proposed vatrombopag as a potential curative and safe approach.
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spelling doaj.art-76fc070e99fb47a7a92c309134ea06a52022-12-22T04:10:16ZengFrontiers Media S.A.Frontiers in Pharmacology1663-98122022-01-011210.3389/fphar.2021.795884795884Case Report: Successful Avatrombopag Treatment for Two Cases of Anti-PD-1 Antibody-Induced Acquired Amegakaryocytic ThrombocytopeniaXiaofang TuAli XueSuye WuMengmeng JinPu ZhaoHao ZhangBackground: Anti-PD-1/PD-L1 immunotherapy has achieved impressive responses in multiple types of malignancies in recent years. However, immune-related adverse events (irAEs) occur and limit their continuous clinical use. Among these irAEs, acquired amegakaryocytic thrombocytopenia (AAT) is rare but often clinically serious, life-threatening and refractory to multiple treatment approaches.Case summary: We reported for the first time the successful treatment of avatrombopag in two cases of anti-PD1 antibody-induced AAT (in particular, one case had progressed to aplastic anemia), which was refractory or intolerant to glucocorticoids, ciclosporin, intravenous immunoglobulin (IVIG), recombinant human thrombopoietin (rh-TPO) and even TPO receptor agonist (TPO-RA) eltrombopag. To date, the two cases manifested as normal platelet counts and are independent of transfusion.Conclusion: Anti-PD1 antibody-induced AAT occurs with low frequency but is often serious and difficult to manage, for which this study proposed vatrombopag as a potential curative and safe approach.https://www.frontiersin.org/articles/10.3389/fphar.2021.795884/fullimmune-related adverse eventsacquired amegakaryocytic thrombocytopeniaanti-PD-1 antibodythrombopoietin receptor agonistsavatrombopag
spellingShingle Xiaofang Tu
Ali Xue
Suye Wu
Mengmeng Jin
Pu Zhao
Hao Zhang
Case Report: Successful Avatrombopag Treatment for Two Cases of Anti-PD-1 Antibody-Induced Acquired Amegakaryocytic Thrombocytopenia
Frontiers in Pharmacology
immune-related adverse events
acquired amegakaryocytic thrombocytopenia
anti-PD-1 antibody
thrombopoietin receptor agonists
avatrombopag
title Case Report: Successful Avatrombopag Treatment for Two Cases of Anti-PD-1 Antibody-Induced Acquired Amegakaryocytic Thrombocytopenia
title_full Case Report: Successful Avatrombopag Treatment for Two Cases of Anti-PD-1 Antibody-Induced Acquired Amegakaryocytic Thrombocytopenia
title_fullStr Case Report: Successful Avatrombopag Treatment for Two Cases of Anti-PD-1 Antibody-Induced Acquired Amegakaryocytic Thrombocytopenia
title_full_unstemmed Case Report: Successful Avatrombopag Treatment for Two Cases of Anti-PD-1 Antibody-Induced Acquired Amegakaryocytic Thrombocytopenia
title_short Case Report: Successful Avatrombopag Treatment for Two Cases of Anti-PD-1 Antibody-Induced Acquired Amegakaryocytic Thrombocytopenia
title_sort case report successful avatrombopag treatment for two cases of anti pd 1 antibody induced acquired amegakaryocytic thrombocytopenia
topic immune-related adverse events
acquired amegakaryocytic thrombocytopenia
anti-PD-1 antibody
thrombopoietin receptor agonists
avatrombopag
url https://www.frontiersin.org/articles/10.3389/fphar.2021.795884/full
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