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Journal of Cancer Research and Clinical Oncology

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01-01-2020 | NSCLC | Original Article – Clinical Oncology

Microwave ablation as local consolidative therapy for patients with extracranial oligometastatic EGFR-mutant non-small cell lung cancer without progression after first-line EGFR-TKIs treatment

Authors: Yang Ni, Xin Ye, Xia Yang, Guanghui Huang, Wenhong Li, Jiao Wang, Xiaoying Han, Zhigang Wei, Min Meng

Published in: Journal of Cancer Research and Clinical Oncology | Issue 1/2020

Abstract

Objectives

Evidence from multiple clinical trials showed that local consolidative therapy (LCT) improved survival in oligometastatic non-small cell lung cancer (NSCLC) patients. In the present study, we aim to explore the potential role of microwave ablation (MWA) as LCT for epidermal growth factor receptor (EGFR)-mutant advanced NSCLC patients with extracranial oligometastasis.

Materials and methods

From January 2015 to December 2018, a total of 86 EGFR-mutant stage IIIB or IV NSCLC patients with extracranial oligometastasis were enrolled for retrospective analysis. MWA was used as LCT for all oligometastatic lesions and/or primary tumors in 34 patients without progression after first-line EGFR-TKIs therapy (consolidation group), while the other 52 patients received only TKIs until disease progression (monotherapy group). We calculated and compared the progression-free survival (PFS) and overall survival (OS) of the two groups.

Results and conclusion

Patients with MWA consolidation therapy had significantly improved PFS (median 16.7 vs. 12.9 months, HR 0.44, 95% CI 0.22–0.88, P = 0.02) and OS (median: 34.8 vs. 22.7 months, HR 0.45, 95% CI 0.24–0.88, P = 0.04) than monotherapy group. MWA for LCT was identified as the independent predictive factor for better PFS (HR 0.46, 95% CI 0.37–0.82, P < 0.01) and OS (HR 0.57, 95% CI 0.33–0.91, P = 0.02). Most toxicities were mild and well tolerated. No patient had to discontinue EGFR-TKIs because of MWA complications. These findings suggest that MWA as local consolidative therapy after first-line EGFR-TKIs treatment leads to better disease control and survival than TKIs monotherapy in EGFR-mutant advanced NSCLC patients with extracranial oligometastasis. MWA as a novel option of LCT might be considered for clinical management of these patients.

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Title: Microwave ablation as local consolidative therapy for patients with extracranial oligometastatic EGFR-mutant non-small cell lung cancer without progression after first-line EGFR-TKIs treatment
Authors: Yang Ni
Xin Ye
Xia Yang
Guanghui Huang
Wenhong Li
Jiao Wang
Xiaoying Han
Zhigang Wei
Min Meng
Publication date: 01-01-2020
Publisher: Springer Berlin Heidelberg
Keywords: NSCLC
Tyrosine Kinase Inhibitors
NSCLC
Tyrosine Kinase Inhibitors
Published in: Journal of Cancer Research and Clinical Oncology / Issue 1/2020
Print ISSN: 0171-5216
Electronic ISSN: 1432-1335
DOI: https://doi.org/10.1007/s00432-019-03043-6

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Abstract

Objectives

Materials and methods

Results and conclusion

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Abstract

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