A Sudden Onset of Severe Thrombocytopenia While Using Evolocumab

A 72-year-old man with a 10-year history of coronary heart disease started evolocumab treatment once a month after developing excess myalgia due to therapy with a 3-hydroxy-methylglutaryl CoA reductase inhibitor. No side effects such as myalgia symptoms had been reported during the first 14 months o...

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Bibliographic Details
Main Authors: Ikuo Inoue, Yasuhiro Takenaka, Yoshitora Kin, Satoshi Yamazaki, Yuichi Ikegami, Daigo Saito, Akira Shimada
Format: Article
Language:English
Published: Wiley 2020-01-01
Series:Case Reports in Hematology
Online Access:http://dx.doi.org/10.1155/2020/3281626
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Summary:A 72-year-old man with a 10-year history of coronary heart disease started evolocumab treatment once a month after developing excess myalgia due to therapy with a 3-hydroxy-methylglutaryl CoA reductase inhibitor. No side effects such as myalgia symptoms had been reported during the first 14 months of evolocumab treatment; however, he suddenly presented with acute severe thrombocytopenia following the 14th treatment. His platelet count continued to decrease to a nadir of 1,000/μL. His platelet-associated immunoglobulin G level had elevated to 790 ng/107 cells. He started receiving a combination of steroid therapy, high-dose immunoglobulin therapy, and platelet transfusions, but the first-line therapy was ineffective. He was subsequently treated with a thrombopoietin receptor agonist, and his platelet count recovered to 250,000/μL.
ISSN:2090-6560
2090-6579