Chinese Journal of Pharmacovigilance ›› 2024, Vol. 21 ›› Issue (7): 829-835.
DOI: 10.19803/j.1672-8629.20240054

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Pathogenesis and diagnosis of drug-induced thrombocytopenia

NIE Xiaolu1,2,3, MA Jingyao4, SUN Feng2,3#, ZHAN Siyan2,*   

  1. 1Center for Clinical Epidemiology & Evidence-based Medicine, Beijing Children‘s Hospital, Capital Medical University, National Center for Children’s Health, Beijing 100045, China;
    2Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100091, China;
    3Hainan Institute of Real World Data, Qionghai Hainan 571437, China;
    4Department II of Hematology Center, Beijing Children’s Hospital, Capital Medical University, National Center for Children’s Health, Beijing 100045, China;
  • Received:2024-01-25 Online:2024-07-15 Published:2024-07-31

Abstract: Drug-Induced Thrombocytopenia (DITP) is the most common secondary thrombocytopenia in clinical practice. Based on the pathogenic mechanism, thrombocytopenia can be divided into two major categories: non-immune-mediated and drug-induced immune thrombocytopenia (DIIT). The latter is again classified into four categories based on different immune-mediated mechanisms. In addition to the classical pathway of drug-induced immune thrombocytopenia caused by drug-dependent platelet-reactive antibodies (DDAbs) binding to platelets, other categories include heparin-induced thrombocytopenia (HIT) and immune checkpoint inhibitors-induced thrombocytopenia(ICI-ITP). With the intensified development of vaccines and mass vaccinations following the global COVID-19 pandemic, a newly emerged category within DITP is vaccine-induced thrombotic thrombocytopenia (VITT). This article, in conjunction with related literature published in recent years, reviews the pathogenic characteristics and diagnosis of the aforementioned types of DITP, sorts out databases related to DITP and predicts the prospects of research.

Key words: drug-induced thrombocytopenia(DITP), immune, drug-dependent, antibodies, heparin, vaccine, induced, adverse drug reactions

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