Phase II study of gefitinib readministration in patients with advanced non-small cell lung cancer and previous response to gefitinib

Hajime Asahina, Satoshi Oizumi, Akira Inoue, Ichiro Kinoshita, Takashi Ishida, Yuka Fujita, Noriaki Sukoh, Masao Harada, Makoto Maemondo, Yasuo Saijo, Hirotoshi Dosaka-Akita, Hiroshi Isobe, Toshihiro Nukiwa, Masaharu Nishimura

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

Objective: Salvage treatment for acquired resistance to gefitinib has yet to be developed. We conducted the first prospective phase II study of gefitinib readministration in previous gefitinib responders. Methods: Gefitinib (250 mg/day) was readministered to patients with advanced/metastatic non-small cell lung cancer who had achieved objective response to initial gefitinib and subsequently received cytotoxic chemotherapy after disease progression with initial gefitinib. The primary endpoint was the objective response rate with gefitinib readministration. Secondary endpoints were disease control rate, progression-free survival (PFS), overall survival (OS), quality of life, and toxicity. Changes in lung cancer-related symptoms were evaluated using the seven-item lung cancer subscale of the questionnaire. Results: Sixteen patients were enrolled between February 2005 and January 2008. Most had received ≥3 regimens of chemotherapy. Response and disease-control rates for all patients were 0 and 44%. Median PFS and OS were 2.5 and 14.7 months, respectively. Four of 7 patients with stable disease experienced a long duration (≥6 months) of disease control without severe toxicity. Symptom improvement was observed in 2 of 12 patients (17%) for whom quality of life was evaluable. Conclusion: Gefitinib represents a useful therapeutic option for selected previous gefitinib responders.

Original languageEnglish
Pages (from-to)423-429
Number of pages7
JournalOncology
Volume79
Issue number5-6
DOIs
Publication statusPublished - 2011 Apr

Keywords

  • Chemotherapy
  • Epidermal growth factor receptor
  • Epidermal growth factor receptor-tyrosine kinase inhibitor
  • Gefitinib
  • Non-small cell lung cancer

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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