Clinical Signifcance of Mutant P53 Protein Expression in Lung Adenocarcinoma
10.3779/j.issn.1009-3419.2015.01.04
- VernacularTitle:突变型P53蛋白在肺腺癌中的表达及其临床意义
- Author:
BIAN CHUN’AN
1
,
2
;
LI ZHONGYOU
;
XU YOUTAO
;
WANG JIE
;
XU LIN
;
SHEN HONGBING
Author Information
1. 210009 南京，南京医科大学附属江苏省肿瘤医院胸外科，江苏省恶性肿瘤分子生物学及转化医学重点实验室
2. 210048 南京，南京江北人民医院
- Keywords:
TP53 gene;
Mutation;
Lung neoplasms;
Prognosis
- From:
Chinese Journal of Lung Cancer
2015;(1):23-28
- CountryChina
- Language:Chinese
-
Abstract:
Background and objective P53 is a tumor protein that acts as a tumor suppressor. Te mutation of P53 may cause loss of tumor suppressor functions and gain of functions favoring cellular proliferation and apoptosis inhibition. Te clinical implications of the tumor protein P53 gene (TP53) mutation in lung adenocarcinoma are indefinite. Te aim of this study is to explore the clinical significance of the mutant P53 protein expression in lung adenocarcinoma tissues. Methods Te clinicopathological data of 120 lung adenocarcinoma patients who underwent surgery were retrospectively analyzed. Te mu-tant P53 protein expression was detected using the immunohistochemical method. Furthermore, the relationship between the mutant P53 expression and the clinicopathological parameters was analyzed using the Chi-square test, whereas that between the mutant P53 expression and overall survival was estimated using the Kaplan-Meier method and Cox regression model. Re-sults Te mutant P53 protein expression rate was 63.3%. Accordingly, the mutant P53 expression was significantly associated with tumor size (P=0.041) and clinicopathological stage (P=0.025). On the one hand, a univariate survival analysis showed that tumor size (P=0.031), lymph node metastasis (P<0.001), clinicopathological stage (P<0.001), and mutant P53 expression (P=0.038) were associated with overall survival. On the other hand, a multivariate survival analysis showed that lymph node metastasis (P=0.014) was an independent poor prognostic factor for overall survival. Conclusion Patients with lung adeno-carcinoma with mutant TP53 had a poor outcome. Accordingly, the mutant P53 protein may serve as a molecular prognosis marker for lung adenocarcinoma patients.
