Overall survival of driver mutation-negative non-small cell lung cancer patients with COPD under chemotherapy compared to non-COPD non-small cell lung cancer patients
Received 6 March 2018
Accepted for publication 16 May 2018
Published 12 July 2018 Volume 2018:13 Pages 2139—2146
Checked for plagiarism Yes
Review by Single-blind
Peer reviewer comments 2
Editor who approved publication: Dr Richard Russell
Jeong Uk Lim, Chang Dong Yeo, Chin Kook Rhee, Yong Hyun Kim, Chan Kwon Park, Ju Sang Kim, Jin Woo Kim, Seung Joon Kim, Hyoung Kyu Yoon, Sang Haak Lee
Division of Pulmonology and Critical Care Medicine, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
Objectives: Focusing on the advanced non-small cell lung cancer (NSCLC) patients without driver mutations can elucidate the clinical impact of COPD on treatment outcomes. The present study evaluated the effects of COPD on the overall survival of driver mutation-negative NSCLC patients undergoing conventional chemotherapy as the first-line treatment.
Patients and methods: Medical records of stage IIIB and IV NSCLC patients from January 2008 to December 2015 from six university hospitals were reviewed.
Results: The total study population consisted of 197 patients; 92 (46.7%) were COPD patients and 105 (53.3%) were non-COPD patients. The median survival in the non-COPD group was 11.5 months, compared to 9.2 months in the COPD group. Univariate analysis showed that old age (>70 years), high Eastern Cooperative Oncology Group status score (2–3), squamous cell histology, and COPD were risk factors for mortality. The presence of COPD was a significant prognostic factor in univariate analysis (hazard ratio [HR], 1.402; p=0.037), but not in multivariate analysis (HR, 1.275; p=0.144). Subgroup analysis of 143 smokers showed that COPD was a significant prognostic factor on multivariate analysis (HR, 1.726; p=0.006). In 154 stage IV patients, COPD was also a prognostic factor in multivariate analysis (HR, 1.479; p=0.039).
Conclusion: COPD had a negative impact on overall survival in the stage IV NSCLC and smoker NSCLC patients who underwent conventional chemotherapy.
Keywords: non-small cell lung cancer, chronic obstructive pulmonary disease, smoker, overall survival
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