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Indian J Med Paediatr Oncol
2016 Jan 01;374:242-250. doi: 10.4103/0971-5851.195735.
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Clinicopathological features and outcomes in advanced nonsmall cell lung cancer with tailored therapy.
Bala S
,
Gundeti S
,
Linga VG
,
Maddali LS
,
Digumarti RR
,
Uppin SG
.
Abstract
CONTEXT: Lung cancer is an important cause of cancer-related deaths worldwide. There is an increasing incidence of lung cancer in never smokers and a shift of histology from squamous cell to adenocarcinoma globally in the recent past. Data on treatment outcomes with newer platinum doublets is scant from India.
AIMS: To study the clinicopathological features, response rates (RRs), progression-free survival (PFS), overall survival (OS), and the 1, 2, and 3 years survival, in patients with advanced nonsmall cell lung cancer (NSCLC).
MATERIALS AND METHODS: Data of all patients who received chemotherapy for Stage IIIB and IV NSCLC between January 2010 and June 2014 were retrospectively analyzed.
STATISTICAL ANALYSIS USED: Univariate analysis for OS was done by plotting Kaplan-Meier curves and the log-rank test was used to calculate P values. Logistic regression analysis for OS was carried out using MedCalc statistical software.
RESULTS: A total of 353 patients received chemotherapy. Of these, 256 were evaluable for outcome parameters. The median age at presentation was 58 years with a male:female ratio of 2.53:1. The smoker:nonsmoker ratio was 1:1. Adenocarcinomatous histology was the most common both in smokers and nonsmokers reported in 70.8% patients. Epidermal growth factor receptor (EGFR) mutation and echinoderm microtubule-associated protein-like 4-anaplastic lymphoma kinase translocation were seen in 35% and 3% of patients, respectively. The RR, median PFS, OS, 1, 2, and 3 years survival were 80%, 8 months, 12.1 months, 51.5%, 12.7%, and 4.2%, respectively. There was no significant survival difference among the treatment regimen used but the response to I line chemotherapy impacted survival. Female gender, performance status, and nonsquamous histology were significant predictors of OS (P = 0.0443, P = 0.0003, P = 0.048, respectively).
CONCLUSIONS: There was an increase in the incidence of nonsmokers. Adenocarcinoma was the most common histology in both smokers and nonsmokers. Treatment outcomes in advanced lung cancer were better compared to the past with the advent of newer platinum doublets and EGFR tyrosine kinase inhibitors. The response to first-line chemotherapy significantly impacts outcomes in advanced NSCLC.
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