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Published in: Targeted Oncology 4/2018

01-08-2018 | Therapy in Practice

BIM Deletion Polymorphism Confers Resistance to Osimertinib in EGFR T790M Lung Cancer: a Case Report and Literature Review

Authors: Xuanzong Li, Shijiang Wang, Butuo Li, Zhen Wang, Shuheng Shang, Yang Shao, Xindong Sun, Linlin Wang

Published in: Targeted Oncology | Issue 4/2018

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Abstract

The third-generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI) osimertinib (AZD9291) has shown significant clinical efficacy against the EGFR T790M mutation in non-small cell lung cancer (NSCLC) patients. However, resistance inevitably occurs, and the mechanisms leading to treatment failure need to be further investigated. The B-cell lymphoma 2 (BCL-2)-like 11 (BIM) deletion polymorphism, which occurs at a frequency of 21% in East Asians but is absent in African and European populations, has been associated with resistance to first-generation EGFR TKIs, such as gefitinib and erlotinib; and is a poor prognostic factor for NSCLC patients with EGFR mutations. Nevertheless, the significance of this BIM deletion polymorphism in the resistance to osimertinib has not been reported. Here, we show for the first time that a NSCLC patient harboring the EGFR L858R/T790M mutations, as well as the BIM deletion polymorphism, exhibited poor clinical outcomes with osimertinib treatment. This result suggests that the BIM deletion polymorphism might have prognostic value for determining NSCLC patient outcomes following osimertinib treatment.
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Literature
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go back to reference Ettinger DS, Wood DE, Akerley W, Bazhenova LA, Borghaei H, Camidge DR, et al. Non-small cell lung Cancer, version 6. J Ntnl Comprehens Cancer Netw. 2015;13(5):515–24.CrossRef Ettinger DS, Wood DE, Akerley W, Bazhenova LA, Borghaei H, Camidge DR, et al. Non-small cell lung Cancer, version 6. J Ntnl Comprehens Cancer Netw. 2015;13(5):515–24.CrossRef
Metadata
Title
BIM Deletion Polymorphism Confers Resistance to Osimertinib in EGFR T790M Lung Cancer: a Case Report and Literature Review
Authors
Xuanzong Li
Shijiang Wang
Butuo Li
Zhen Wang
Shuheng Shang
Yang Shao
Xindong Sun
Linlin Wang
Publication date
01-08-2018
Publisher
Springer International Publishing
Published in
Targeted Oncology / Issue 4/2018
Print ISSN: 1776-2596
Electronic ISSN: 1776-260X
DOI
https://doi.org/10.1007/s11523-018-0573-2

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