Case report: long-term response to osimertinib in metastatic non-small cell lung cancer with a rare mutation in EGFR gene exon 20
- Authors: Nelyubina L.A.1, Reutova E.V.1, Laktionov K.K.1, Stroganova A.M.1
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Affiliations:
- N.N. Blokhin National Medical Research Center of Oncology
- Issue: Vol 31, No 7 (2024)
- Pages: 112-116
- Section: Clinical case
- URL: https://journal-vniispk.ru/2073-4034/article/view/279024
- DOI: https://doi.org/10.18565/pharmateca.2024.7.112-116
- ID: 279024
Cite item
Abstract
Mutations in the epidermal growth factor receptor (EGFR) gene are present in more than 15–20% of patients with non-small cell lung cancer (NSCLC). These are mostly classical activating mutations – deletions in exon 19 and L858R point mutations in exon 21. Both mutations are sensitive to EGFR tyrosine kinase inhibitors (TKIs), which have become the accepted standard of first-line treatment for advanced EGFR-mutated NSCLC. However, 10 to 20% of EGFR-positive NSCLC cases have less common mutations, including exon 20 mutations, for which the response to EGFR TKI therapy can vary significantly depending on the type of mutation, and the choice of optimal therapy remains a challenge. Here, we present a description of a clinical case of successful and durable response to first-generation (within a year) and then third-generation (more than 7 years) TKI therapy in metastatic NSCLC with a rare EGFR exon 20 mutation. Treatment is still ongoing.
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##article.viewOnOriginalSite##About the authors
Lidiya A. Nelyubina
N.N. Blokhin National Medical Research Center of Oncology
Author for correspondence.
Email: nelyubina.la@gmail.com
ORCID iD: 0009-0006-0796-6993
Cand. Sci. (Med.), Research at the Department of Antitumor Drug Therapy No. 3, N.N. Trapeznikov Research Institute of Clinical Oncology
Russian Federation, MoscowE. V. Reutova
N.N. Blokhin National Medical Research Center of Oncology
Email: nelyubina.la@gmail.com
ORCID iD: 0000-0002-2154-3376
N.N. Trapeznikov Research Institute of Clinical Oncology
Russian Federation, MoscowK. K. Laktionov
N.N. Blokhin National Medical Research Center of Oncology
Email: nelyubina.la@gmail.com
ORCID iD: 0000-0003-4469-502X
N.N. Trapeznikov Research Institute of Clinical Oncology
Russian Federation, MoscowA. M. Stroganova
N.N. Blokhin National Medical Research Center of Oncology
Email: nelyubina.la@gmail.com
ORCID iD: 0000-0002-7297-5240
Russian Federation, Moscow
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