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Philip Morris

A Study of the Relationship Between P53 Mutation and Smoking in Non-Small Cell Lung Cancer

Date: Oct 1994 (est.)
Length: 2 pages
2029049289-2029049290
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Author
Bi, X.J.
Li, J.H.
Peng, Z.H.
Type
REPT, REPORT, OTHER
Document File
2029049064/2029049554/International Symposium on
Life-Style Factors and Human Lung Cancer
Site
I10
Request
Stmn/R2-038
Author (Organization)
1st Military Medical Univ Guangzhou
Nan Fang Hospital
Master ID
2029049067/9553
Related Documents:
Litigation
Stmn/Produced
Area
WALK,RUEDIGER-ALEX/INBIFO OFFICE
Date Loaded
05 Jun 1998
UCSF Legacy ID
thd83e00

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A STUDY OF THE RELATIONSHIP BETWEEN P53 MUTATION AND SMOKING IN HUMAN NON-SMALL CELL LUNG CANCER Li, J.H., Bi, X.J., and Peng, Z.H. Department of Oncology, Nan Fang Hospital, First Military Medical University, Guangzhou, China A study was undertaken to explore the relationship between p53 mutation and cigarette smoking in human non-small cell lung cancer (NSCLC) during 1992 to 1993. The p53 mutation of 52 patients with pathologically proven NSCLC was assessed. In this group of 43 males and 9 females, the ratio of male to female was 4. 8 c 1, and age ranged from 30 to 71 years old, with a median of 55. The histopathologic categories of the cases were 30 squamous cell cancers and 22 adenocarcinoma. The detection of p53 mutations of all primary resected NSCLC specimens was performed with immunohistochemistry. One patient with adenocarcinoma had a mutated allele of p53. PCR-SSCP analysis showed the p53 mutation to be in the region between exons 5, 6, 7 and'8. Sequence determination revealed that the 280 codon has been changed from AGA to ACA.
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Thirty-seven of 52 patients with lung cancer reported smoking cigarettes, suggesting that the presence of lung cancer was probably associated with smoking. However, in 25 patients with a p53 mutation, the smoking individuals accounted for only 17 cases (68%); in 27 patients without a p53 mutation, the smoking individuals accounted for 20 cases (74%), a difference that was not statistically significant (p=0.05). These results revealed that the p53 mutation might not be closely related with smoking cigarettes.

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