Postmarketing Safety Concerns With Caplacizumab: A Real-World Pharmacovigilance Study Based on the FDA Adverse Event
Juan Shao1, Jing Lin2, Hong-Yan Xu3
1Department of Pharmacy, The Second Qilu Hospital of Shandong University, 250033 Jinan, Shandong, China.
Die Pharmazie
|July 7, 2026
Summary
Caplacizumab is associated with bleeding events and injection site reactions in thrombotic thrombocytopenic purpura (TTP) patients. Postmarketing surveillance is crucial for monitoring these adverse events and ensuring safe drug use.
Area of Science:
- Pharmacovigilance and drug safety research.
- Hematology and thrombosis research.
- Real-world evidence generation.
Background:
- Caplacizumab is a therapeutic agent used in managing thrombotic thrombocytopenic purpura (TTP).
- Understanding its real-world adverse event profile is essential for safe clinical application.
Purpose of the Study:
- To characterize adverse effects and safety signals of caplacizumab using FAERS data.
- To provide evidence supporting the rational use of caplacizumab in TTP treatment.
Main Methods:
- Analysis of postmarketing adverse event reports from the FAERS database.
- Utilized disproportionality analysis (ROR, PRR, BCPNN, MGPS) for safety signal detection.
- Employed Weibull distribution for AE onset time analysis and subgroup analyses.
Main Results:
- 1144 caplacizumab-related reports were analyzed; most AEs were nonserious.
- Bleeding events (e.g., epistaxis, gingival bleeding) were consistent with labeling.
- New safety signals included contusion, injection site reactions, pruritus, and rash.
Conclusions:
- Pharmacovigilance and postmarketing surveillance are vital for caplacizumab safety.
- Clinicians must monitor bleeding and injection site reactions.
- Further research is needed to elucidate mechanisms and develop targeted monitoring strategies.
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