Gefitinib Versus Docetaxel in Previously Treated Non-Small-Cell Lung Cancer (INTEREST): A Randomised Phase III Trial

Lancet. 2008 Nov 22;372(9652):1809-18. doi: 10.1016/S0140-6736(08)61758-4.

Abstract

Background: Two phase II trials in patients with previously-treated advanced non-small-cell lung cancer suggested that gefitinib was efficacious and less toxic than was chemotherapy. We compared gefitinib with docetaxel in patients with locally advanced or metastatic non-small-cell lung cancer who had been pretreated with platinum-based chemotherapy.

Methods: We undertook an open-label phase III study with recruitment between March 1, 2004, and Feb 17, 2006, at 149 centres in 24 countries. 1466 patients with pretreated (>/=one platinum-based regimen) advanced non-small-cell lung cancer were randomly assigned with dynamic balancing to receive gefitinib (250 mg per day orally; n=733) or docetaxel (75 mg/m(2) intravenously in 1-h infusion every 3 weeks; n=733). The primary objective was to compare overall survival between the groups with co-primary analyses to assess non-inferiority in the overall per-protocol population and superiority in patients with high epidermal growth factor receptor (EGFR)-gene-copy number in the intention-to-treat population. This study is registered with ClinicalTrials.gov, number NCT00076388.

Findings: 1433 patients were analysed per protocol (723 in gefitinib group and 710 in docetaxel group). Non-inferiority of gefitinib compared with docetaxel was confirmed for overall survival (593 vs 576 events; hazard ratio [HR] 1.020, 96% CI 0.905-1.150, meeting the predefined non-inferiority criterion; median survival 7.6 vs 8.0 months). Superiority of gefitinib in patients with high EGFR-gene-copy number (85 vs 89 patients) was not proven (72 vs 71 events; HR 1.09, 95% CI 0.78-1.51; p=0.62; median survival 8.4 vs 7.5 months). In the gefitinib group, the most common adverse events were rash or acne (360 [49%] vs 73 [10%]) and diarrhoea (255 [35%] vs 177 [25%]); whereas in the docetaxel group, neutropenia (35 [5%] vs 514 [74%]), asthenic disorders (182 [25%] vs 334 [47%]), and alopecia (23 [3%] vs 254 [36%]) were most common.

Interpretation: INTEREST established non-inferior survival of gefitinib compared with docetaxel, suggesting that gefitinib is a valid treatment for pretreated patients with advanced non-small-cell lung cancer.

Publication types

  • Clinical Trial, Phase III
  • Comparative Study
  • Multicenter Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Antineoplastic Agents / adverse effects
  • Antineoplastic Agents / therapeutic use*
  • Carcinoma, Non-Small-Cell Lung / drug therapy*
  • Carcinoma, Non-Small-Cell Lung / mortality
  • Docetaxel
  • ErbB Receptors / genetics
  • Female
  • Gefitinib
  • Humans
  • Lung Neoplasms / drug therapy*
  • Lung Neoplasms / mortality
  • Lung Neoplasms / pathology
  • Male
  • Middle Aged
  • Quality of Life
  • Quinazolines / adverse effects
  • Quinazolines / therapeutic use*
  • Survival Analysis
  • Taxoids / adverse effects
  • Taxoids / therapeutic use*

Substances

  • Antineoplastic Agents
  • Quinazolines
  • Taxoids
  • Docetaxel
  • EGFR protein, human
  • ErbB Receptors
  • Gefitinib

Associated data

  • ClinicalTrials.gov/NCT00076388