EGFR mutation predicts response and prognosis in iressa-treated advanced-stage non-small cell lung cancer / 中华肿瘤杂志
Chinese Journal of Oncology
;
(12): 278-283, 2007.
Article
in Chinese
| WPRIM
| ID: wpr-255664
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the correlation between mutation in EGFR tyrosine kinase domain and tumor response as well as prognosis in advanced stage non-small cell lung cancer (NSCLC) treated with iressa.</p><p><b>METHODS</b>From May 2002 to Feb. 2005, iressa was orally administered at a dose of 250 mg once daily for 106 advanced stage NSCLC patients until occurrence of disease progression or intolerable toxicity. Cancer tissue was obtained from these patients, and DNA was extracted for analysis of mutation in exon 18 to 24 of EGFR. Exon 18 to 24 of EGFR were amplified by nest PCR, sequenced and analyzed from both sense and antisence directions.</p><p><b>RESULTS</b>Primary NSCLC tissue specimens consisted of 25 frozen tissue blocks and 81 paraffin-embedded tumor tissue blocks from 106 consecutive NSCLC patients. Mutation was found to be more frequent in the adenocarcinoma than in the squamous cell carcinoma (35.9% vs 14.3%, P =0.033). Mutation was identified in 32 patients (30.2%). Response rate to iressa was 71.9% in the patients with EGFR mutation versus 13.5% in those without mutation (P <0.01). Compared with the patients without EGFR mutation, those with mutation had longer overall survival (median, 13.45 vs. 5.25 months; P<0.01) and median time to progression (median, 8.35 vs. 3.0 months; P <0.01).</p><p><b>CONCLUSION</b>EGFR mutation may be positively correlated with the response and survival in advanced stage Chinese NSCLC patient treated with iressa.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pathology
/
Prognosis
/
Quinazolines
/
Carcinoma, Squamous Cell
/
Adenocarcinoma
/
Exons
/
Follow-Up Studies
/
Sequence Deletion
/
Point Mutation
/
Carcinoma, Non-Small-Cell Lung
Type of study:
Observational study
/
Prognostic study
Limits:
Adolescent
/
Adult
/
Aged
/
Female
/
Humans
/
Male
Language:
Chinese
Journal:
Chinese Journal of Oncology
Year:
2007
Type:
Article
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