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SBRT for oligoprogressive oncogene addicted NSCLC.

L Basler1, S G C Kroeze1, M Guckenberger1

  • 1Department of Radiation Oncology, University Hospital Zurich, Rämistrasse 100, CH 8091 Zurich, Switzerland.

Lung Cancer (Amsterdam, Netherlands)
|March 14, 2017
PubMed
Summary

Lung cancer patients with EGFR or ALK mutations can develop resistance to targeted therapies. Treating limited oligoprogressive disease (OPD) with local therapies like SBRT may help overcome resistance and prolong survival.

Keywords:
EGFR mutationOligoprogressive disease (OPD)Oncogene addicted lung cancerResistance to targeted therapyStereotactic body radiotherapy (SBRT)Tyrosine kinase inhibitors

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Profiling Sensitivity to Targeted Therapies in EGFR-Mutant NSCLC Patient-Derived Organoids
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Area of Science:

  • Oncology
  • Medical Physics
  • Genetics

Background:

  • Lung cancer, particularly lung adenocarcinoma, has poor outcomes despite advances.
  • Targeted therapies like tyrosine kinase inhibitors (TKIs) show initial efficacy in EGFR/ALK-mutated NSCLC but resistance develops.
  • Oligoprogressive disease (OPD) is a specific pattern of progression in a subset of patients on TKI therapy.

Purpose of the Study:

  • To review the biological mechanisms of TKI resistance in lung cancer.
  • To explore systemic and local treatment strategies for TKI-resistant lung cancer, focusing on OPD.
  • To discuss challenges in defining OPD and highlight ongoing clinical trials.

Main Methods:

  • Literature review of TKI resistance mechanisms in EGFR/ALK-mutated NSCLC.
  • Analysis of retrospective data on local treatments for oligoprogressive disease.
  • Discussion of SBRT, surgery, and other local modalities.
  • Review of diagnostic criteria and clinical trial designs for OPD.

Main Results:

  • TKI therapy offers superior outcomes compared to chemotherapy for EGFR/ALK-mutated lung cancer.
  • Resistance to TKIs is a significant clinical challenge, occurring in most patients.
  • Aggressive local treatment of oligoprogressive lesions may eradicate resistant clones and allow continued TKI therapy.
  • Stereotactic body radiotherapy (SBRT) is a promising local treatment option for OPD.

Conclusions:

  • Targeted therapies have revolutionized lung adenocarcinoma treatment but resistance remains a hurdle.
  • Identifying and treating oligoprogressive disease with local therapies, particularly SBRT, can potentially extend TKI treatment and improve patient survival.
  • Further research and standardized definitions are needed to optimize the management of oligoprogressive disease in NSCLC.