Abstract
Background: The literature has paid very little attention to pericarditis, pericardial effusion and pancreatitis during clozapine treatment in children and adolescents. Methods: Cases of clozapine-associated pericarditis and pancreatitis in children were studied using searches in: 1) PubMed (June 16, 2023), and 2) the World Health Organization's pharmacovigilance database (June 1, 2022), VigiBase. VigiBase uses a logarithmic measure of disproportionality called the information component (IC). Results: The PubMed search yielded 3 clozapine-associated pericarditis cases, 1 pancreatitis case and 1 with both. VigiBase provided a significant clozapine-associated pericarditis IC = 3.6 with an IC025 = 2.9 (only 3 cases were expected while 22 were observed). VigiBase provided a significant clozapine-associated pancreatitis IC = 2.2 with an IC025 = 1.4 (only 3 cases were expected while 16 were observed). In VigiBase clozapine-associated pericarditis and pericardial effusion in youth looked similar and on a continuum with myocarditis, as myocarditis, pericarditis and pancreatitis appeared to occur mainly during clozapine titration. Combining PubMed and VigiBase we identified: 1) 29 cases of at least possible clozapine-associated pericarditis/pericardial effusion (6 probable and 23 possible) including 7 cases with and 22 without myocarditis, and 2) 17 cases of clozapine-associated pancreatitis (1 definite and 16 possible). Two of the pancreatitis cases occurred during overdoses. No fatal outcomes were found in any clozapine-associated pericarditis and pancreatitis cases. Conclusions: Despite the lack of attention in the literature to clozapine-associated pericarditis and pancreatitis, results demonstrate that they can happen in youth, particularly during titration. Pericarditis and pancreatitis appear to be forms of clozapine-associated inflammation during dose titration.
Original language | English |
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Pages (from-to) | 118-130 |
Number of pages | 13 |
Journal | Schizophrenia Research |
Volume | 268 |
DOIs | |
State | Published - Jun 2024 |
Bibliographical note
Publisher Copyright:© 2023 The Authors
Funding
The authors are indebted to the national centers which make up the World Health Organization (WHO) Program for International Drug Monitoring and contribute reports to VigiBase. The information comes from a variety of sources, and the probability that the suspected adverse effect is drug-related is not the same in all cases. However, the opinions and conclusions of this study are not necessarily those of the various centers or of the WHO. The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors. Open access funding provided by Università degli Studi Magna Graecia di Catanzaro within the CRUI-CARE Agreement.
Funders | Funder number |
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Università degli Studi Magna Graecia di Catanzaro | |
World Health Organization |
Keywords
- Clozapine/administration and dosage
- Clozapine/adverse effects
- Clozapine/toxicity
- Pancreatitis
- Pericardial effusion
- Pericarditis
ASJC Scopus subject areas
- Psychiatry and Mental health
- Biological Psychiatry