Multicenter Observational Study of Erlotinib Therapy (OBSTAR) for Non Small-Cell Lung Cancer: A GFPC Study

Lung Cancer. 2011 Nov;74(2):264-7. doi: 10.1016/j.lungcan.2011.03.007. Epub 2011 May 14.

Abstract

Context: Erlotinib therapy for non small-cell lung cancer (NSCLC) has mainly been evaluated in randomized trials.

Method: OBSTAR was a multicenter, retrospective, observational study involving all patients treated with erlotinib in 18 French centers between June 2005 and September 2007. The analyses focused on the patients' characteristics, previous treatments, and treatment efficacy during a three-year follow-up period.

Results: 534 patients were included in this study. The median survival times were respectively 5.2 [3.7-7.4] and 4.7 [4.1-5.7] months, depending to whether erlotinib was used as second- (n=190), or ≥ third-line treatment (n=305). The disease control rate were 39.1% [30.2-48.7] and 29.9% [29.6-36.9] according to the line of treatment. Factors predictive of an objective response were gender, age, and smoking status. Factors predictive of progression were age, sex, smoking status, the line of treatment, and the number of metastases. Treatment had to be interrupted for toxicity in 8.5% of cases.

Conclusion: This study of erlotinib therapy in 2005-2007 confirms, in the general NSCLC patient population, the results of pivotal trials.

Publication types

  • Multicenter Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Age Factors
  • Aged
  • Aged, 80 and over
  • Antineoplastic Agents / administration & dosage*
  • Antineoplastic Agents / adverse effects
  • Carcinoma, Non-Small-Cell Lung / diagnosis*
  • Carcinoma, Non-Small-Cell Lung / drug therapy*
  • Carcinoma, Non-Small-Cell Lung / mortality
  • Carcinoma, Non-Small-Cell Lung / pathology
  • Carcinoma, Non-Small-Cell Lung / physiopathology
  • Disease Progression
  • Disease-Free Survival
  • Erlotinib Hydrochloride
  • Female
  • Follow-Up Studies
  • France
  • Humans
  • Lung Neoplasms / diagnosis*
  • Lung Neoplasms / drug therapy*
  • Lung Neoplasms / mortality
  • Lung Neoplasms / pathology
  • Lung Neoplasms / physiopathology
  • Male
  • Middle Aged
  • Neoplasm Metastasis
  • Neoplasm Staging
  • Prognosis
  • Quinazolines / administration & dosage*
  • Quinazolines / adverse effects
  • Retrospective Studies
  • Risk Factors
  • Sex Factors
  • Smoking
  • Survival Analysis
  • Withholding Treatment

Substances

  • Antineoplastic Agents
  • Quinazolines
  • Erlotinib Hydrochloride