International Journal of Clinical Oncology

, Volume 20, Issue 6, pp 1122–1129 | Cite as

Gefitinib treatment in patients with postoperative recurrent non-small-cell lung cancer harboring epidermal growth factor receptor gene mutations

  • Yuhei Yokoyama
  • Makoto Sonobe
  • Tetsu Yamada
  • Masaaki Sato
  • Toshi Menju
  • Akihiro Aoyama
  • Toshihiko Sato
  • Fengshi Chen
  • Mitsugu Omasa
  • Hiroshi Date
Original Article

Abstract

Background

The epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor gefitinib is an effective treatment for recurrent or advanced lung cancer harboring EGFR gene mutations, and has improved progression-free survival in several clinical trials. However, the effect of gefitinib treatment for recurrent lung cancers with EGFR gene mutations after complete resection and the influence of the timing of such treatment have not been fully elucidated in a practical setting.

Methods

We investigated 64 patients (median age: 68 years; men: 22; women: 42; adenocarcinoma: 61; adenosquamous cell carcinoma: 2; combined large cell neuroendocrine carcinoma: 1) with recurrent lung cancer after complete resection who received gefitinib for the recurrent lesions and in whom the tumors had EGFR gene mutations. Progression-free survival, response rate, and safety were analyzed.

Results

Complete response and partial response were achieved in 2 patients and in 42 patients, respectively (objective response rate: 69 %). Stable disease was obtained in 16 patients, the disease control rate was 94 %, and median progression-free survival was 16 months. The timing of gefitinib treatment (first line, second line, or later) and the type of EGFR gene mutation present did not influence progression-free survival. However, a smaller number of recurrent sites at the start of gefitinib treatment was linked to better progression-free survival. Hematologic and nonhematologic toxicities were generally mild, but 1 patient experienced interstitial lung disease.

Conclusions

Our results suggest that gefitinib treatment for recurrent lung cancer with gene EGFR mutations is a useful option in a practical setting, irrespective of the timing of such treatment and the type of EGFR gene mutation present.

Keywords

Lung cancer Epidermal growth factor receptor Postoperative recurrence Gefitinib 

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Copyright information

© Japan Society of Clinical Oncology 2015

Authors and Affiliations

  • Yuhei Yokoyama
    • 1
  • Makoto Sonobe
    • 1
  • Tetsu Yamada
    • 1
  • Masaaki Sato
    • 1
  • Toshi Menju
    • 1
  • Akihiro Aoyama
    • 1
  • Toshihiko Sato
    • 1
  • Fengshi Chen
    • 1
  • Mitsugu Omasa
    • 1
  • Hiroshi Date
    • 1
  1. 1.Department of Thoracic SurgeryKyoto University HospitalKyotoJapan

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