Therapie · 2024
[Adverse effects of the tezacaftor/ivacaftor/elexacaftor combination that may lead to discontinuation: About a series of 10 cases].
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Blaisonneau Elora, Le Daré Brendan, Mercerolle Marion, Bacle Astrid, Triquet Louise, Osmont Marie-Noëlle, Belleguic Chantal, Polard Elisabeth
Аннотация
INTRODUCTION: Cystic fibrosis transmembrane regulator (CFTR) channel modulators (ivacaftor, lumacaftor, tezacaftor and elexacaftor) represent a major advance in the management of cystic fibrosis. However, few data are available on the real-life safety profile of these medications, in particular on adverse events that may lead to their discontinuation. The aim of this study is to describe the characteristics and evolution of adverse reactions to the tezacaftor/ivacaftor/elexacaftor combination that led to discontinuation and were reported to the Centre régional de pharmacovigilance (CRPV) in Rennes (France).
MATERIALS AND METHODS: A retrospective study was conducted from December 2021 to May 2023, focusing on cases of discontinuation of the tezacaftor/ivacaftor/elexacaftor combination due to the occurrence of one or more adverse effects, and reported to the CRPV of Rennes, France.
RESULTS: Ten cases of drug discontinuation were reported to the Rennes CRPV (6 women/4 men). Adverse effects mainly involved neuropsychiatric disorders (n=6), followed by liver disorders (n=2), ear, nose and throat disorders (n=1), and digestive disorders (n=1). The average duration of treatment at discontinuation was 339.8 [39-668] days. The drug was reintroduced in 7 patients on average 48.7 [7-123] days after discontinuation, with a dosage adjustments (n=4) consisting of changes in dosing times or a reduction in daily doses, with varying success in alleviating adverse symptoms depending on the case.
CONCLUSION: This small case series suggests that neuropsychiatric adverse effects may occur more frequently than initially described after initiation of tezacaftor/ivacaftor/elexacaftor, and should be carefully screened and monitored. Dosage or administration schedule modifications may be considered for patients experiencing these adverse effects. Further pharmacovigilance studies are needed to better understand the adverse effect profiles of "caftors", their possible risk factors, and the impact of adjusting dosing modalities.
MATERIALS AND METHODS: A retrospective study was conducted from December 2021 to May 2023, focusing on cases of discontinuation of the tezacaftor/ivacaftor/elexacaftor combination due to the occurrence of one or more adverse effects, and reported to the CRPV of Rennes, France.
RESULTS: Ten cases of drug discontinuation were reported to the Rennes CRPV (6 women/4 men). Adverse effects mainly involved neuropsychiatric disorders (n=6), followed by liver disorders (n=2), ear, nose and throat disorders (n=1), and digestive disorders (n=1). The average duration of treatment at discontinuation was 339.8 [39-668] days. The drug was reintroduced in 7 patients on average 48.7 [7-123] days after discontinuation, with a dosage adjustments (n=4) consisting of changes in dosing times or a reduction in daily doses, with varying success in alleviating adverse symptoms depending on the case.
CONCLUSION: This small case series suggests that neuropsychiatric adverse effects may occur more frequently than initially described after initiation of tezacaftor/ivacaftor/elexacaftor, and should be carefully screened and monitored. Dosage or administration schedule modifications may be considered for patients experiencing these adverse effects. Further pharmacovigilance studies are needed to better understand the adverse effect profiles of "caftors", their possible risk factors, and the impact of adjusting dosing modalities.