Clinicopathologic features of non-small cell lung cancer in India and correlation with epidermal growth factor receptor mutational status.
Indian J Cancer
; 50(2): 94-101, 2013.
Article
in En
| MEDLINE
| ID: mdl-23979198
ABSTRACT
INTRODUCTION:
We performed retrospective analysis of 106 patients with lung cancer for which formalin-fixed paraffin-embedded tissues was available. Their epidermal growth factor receptor (EGFR) mutation status and treatment outcomes are described. MATERIALS ANDMETHODS:
All patients with confirmed non-small cell lung cancer (NSCLC) during Jan 2008 to Dec 2010 were included. EGFR sequencing was performed with ABI PRISM 310 genetic analyzer.RESULTS:
Forty-two (39.6%) patients had mutation in one of the four exons characterized. Patients whose EGFR mutational status was not available at presentation before the start of treatment were started on chemotherapy, n = 46 (43.39%). If EGFR mutational analysis was available and mutations were present, the patients were started on either upfront tyrosine kinase inhibitor (TKI), n = 15 (14.15%) or if on chemotherapy arm were allowed to finish six cycles and then start with maintenance TKIs, n = 26 (24.52%). The median progression free survival for patients with and without mutations was 11 months (95% CI,7-14) and 9 months (95% CI,7-10) respectively. A median PFS of 14 months (95%CI, 12-16) was seen in the mutation-positive group that received both chemotherapy followed by switch maintenance with TKIs versus 8 months (95%CI, 7-8 months) in the group that received only TKI.CONCLUSION:
The prevalence of EGFR mutations in this population of NSCLC patients was 39.6% with exon 19 mutation being the most common. The observed benefit of addition of chemotherapy over TKI in EGFR mutation-positive group raises the question, can we offer the therapy of chemotherapy-TKI combination to EGFR mutation-positive lung cancer patients as shown in the present study.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Carcinoma, Non-Small-Cell Lung
/
Protein Kinase Inhibitors
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ErbB Receptors
Type of study:
Risk_factors_studies
Limits:
Adolescent
/
Adult
/
Aged
/
Aged80
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Female
/
Humans
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Male
/
Middle aged
Country/Region as subject:
Asia
Language:
En
Journal:
Indian J Cancer
Year:
2013
Document type:
Article
Affiliation country:
India