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Pharmacokinetic Boosting of Osimertinib — OSIBOOST  

Non Small Cell Lung Cancer Clinical Trial

Official title:
Pharmacokinetic Boosting of Osimertinib in Patients With Non-small Cell Lung Cancer.

Clinical Trial Summary

The main objective of this study is to evaluate if systemic exposure of osimertinib (i.e. AUC) is increased when osimertinib is co-administered with cobicistat in patients with relatively low plasma trough concentration while receiving the standard osimertinib dose.

Clinical Trial Description

Osimertinib is a new targeted agent registered for the treatment of patients with EGFR-mutated NSCLC. However, the costs of those new treatments are extremely high. Osimertinib is mainly metabolized by CYP3A4, and partially by CYP3A5. Combination of osimertinib with a strong CYP3A4-inhibitor may result in a smaller first-pass effect and a decreased clearance of osimertinib, thereby increasing the exposure to osimertinib. Cobicistat is a strong CYP3A4-inhibitor, this mechanism may be used to boost osimertinib, as is done for other drugs, mainly drugs used to treat HIV-infected patients. Using this personalized treatment approach and combining the concepts of therapeutic drug monitoring (TDM) and pharmacokinetic boosting, osimertinib therapy could become much more cost-effective. By reducing the necessary dose of osimertinib, this strategy may ultimately result in a significant reduction in drug costs, as the additional expenditure for the CYP3A4 inhibitor and blood sample analysis are negligible compared to the price of osimertinib. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT03858491
Study type Interventional
Source Academisch Ziekenhuis Maastricht
Contact
Status Completed
Phase Early Phase 1
Start date November 1, 2020
Completion date December 31, 2021
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