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Expression of EGFR Is Closely Related to Reduced 3-Year Survival Rate in Chinese Female NSCLC.

Sun G, Liu B, He J, Zhao X, Li B - Med. Sci. Monit. (2015)

Bottom Line: Non-small cell lung cancer (NSCLC) accounts for approximately 80% of lung carcinoma cases, which becomes more and more important in the field of lung carcinoma as well as primary lung carcinoma in females.The cumulative survival rate was determined by the Kaplan-Meier product-limit method.The Cox proportional risk model analysis showed a correlation between postoperative survival time of the patients and pathology of the tumor type and lymph node metastasis.

View Article: PubMed Central - PubMed

Affiliation: Department of Thoracic and Cardiovascular Surgery, Changzheng Hospital, The Second Military Medical University, Shanghai, China (mainland).

ABSTRACT

Background: Non-small cell lung cancer (NSCLC) accounts for approximately 80% of lung carcinoma cases, which becomes more and more important in the field of lung carcinoma as well as primary lung carcinoma in females.

Material and methods: We analyzed the medical history of 62 female NSCLC patients. Immunohistochemistry was used to observe and compare the expression of EGFR. The chi-square test was conducted to analyze associations between EGFR expression and the different variables. The cumulative survival rate was determined by the Kaplan-Meier product-limit method. The prognosis of female patients with NSCLC was examined by using a multivariate Cox proportional hazard regression model.

Results: The expression proportion of EGFR in Chinese female NSCLC patients was 70.97%, and it was remarkably higher in adenocarcinoma than in squamous cell carcinoma and bronchioloalveolar carcinoma. A positive correlation was observed between EGFR expression and tumor-node metastasis staging or lymph node metastasis. The Cox proportional risk model analysis showed a correlation between postoperative survival time of the patients and pathology of the tumor type and lymph node metastasis.

Conclusions: Expression of EGFR was closely related to pathology of the tumor type, tumor-node metastasis staging, and lymph node metastasis, which could be used as a promising indicator of NSCLC in Chinese female patients.

No MeSH data available.


Related in: MedlinePlus

Expression of EGFR in sample tissues (A–F). (A) Positive expression of EGFR in female adenocarcinoma (×100); (B) Positive expression of EGFR in female squamous cell carcinoma (×100); (C) Positive expression of EGFR in female bronchioloalveolar carcinoma (×100); (D) Positive expression of EGFR in female bronchioloalveolar carcinoma (×400); (E) Positive overexpression of EGFR in female adenocarcinoma (×400); (F) Negative expression of EGFR in female non-malignant lung tissues cases (×100).
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f1-medscimonit-21-2225: Expression of EGFR in sample tissues (A–F). (A) Positive expression of EGFR in female adenocarcinoma (×100); (B) Positive expression of EGFR in female squamous cell carcinoma (×100); (C) Positive expression of EGFR in female bronchioloalveolar carcinoma (×100); (D) Positive expression of EGFR in female bronchioloalveolar carcinoma (×400); (E) Positive overexpression of EGFR in female adenocarcinoma (×400); (F) Negative expression of EGFR in female non-malignant lung tissues cases (×100).

Mentions: Positive staining of EGFR was observed in the cytoplasm and cytomembrane of tumor cells, which was characterized by brownish-yellow particles. Staining efficacy varied among different tissues, as indicated by the pathological images (Figure 1). EGFR expression was positive in 70.97% (44/62) of female NSCLC cases, while it was significantly negative in the control group with nonmalignant lung tissues (p=0.000014).


Expression of EGFR Is Closely Related to Reduced 3-Year Survival Rate in Chinese Female NSCLC.

Sun G, Liu B, He J, Zhao X, Li B - Med. Sci. Monit. (2015)

Expression of EGFR in sample tissues (A–F). (A) Positive expression of EGFR in female adenocarcinoma (×100); (B) Positive expression of EGFR in female squamous cell carcinoma (×100); (C) Positive expression of EGFR in female bronchioloalveolar carcinoma (×100); (D) Positive expression of EGFR in female bronchioloalveolar carcinoma (×400); (E) Positive overexpression of EGFR in female adenocarcinoma (×400); (F) Negative expression of EGFR in female non-malignant lung tissues cases (×100).
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4554359&req=5

f1-medscimonit-21-2225: Expression of EGFR in sample tissues (A–F). (A) Positive expression of EGFR in female adenocarcinoma (×100); (B) Positive expression of EGFR in female squamous cell carcinoma (×100); (C) Positive expression of EGFR in female bronchioloalveolar carcinoma (×100); (D) Positive expression of EGFR in female bronchioloalveolar carcinoma (×400); (E) Positive overexpression of EGFR in female adenocarcinoma (×400); (F) Negative expression of EGFR in female non-malignant lung tissues cases (×100).
Mentions: Positive staining of EGFR was observed in the cytoplasm and cytomembrane of tumor cells, which was characterized by brownish-yellow particles. Staining efficacy varied among different tissues, as indicated by the pathological images (Figure 1). EGFR expression was positive in 70.97% (44/62) of female NSCLC cases, while it was significantly negative in the control group with nonmalignant lung tissues (p=0.000014).

Bottom Line: Non-small cell lung cancer (NSCLC) accounts for approximately 80% of lung carcinoma cases, which becomes more and more important in the field of lung carcinoma as well as primary lung carcinoma in females.The cumulative survival rate was determined by the Kaplan-Meier product-limit method.The Cox proportional risk model analysis showed a correlation between postoperative survival time of the patients and pathology of the tumor type and lymph node metastasis.

View Article: PubMed Central - PubMed

Affiliation: Department of Thoracic and Cardiovascular Surgery, Changzheng Hospital, The Second Military Medical University, Shanghai, China (mainland).

ABSTRACT

Background: Non-small cell lung cancer (NSCLC) accounts for approximately 80% of lung carcinoma cases, which becomes more and more important in the field of lung carcinoma as well as primary lung carcinoma in females.

Material and methods: We analyzed the medical history of 62 female NSCLC patients. Immunohistochemistry was used to observe and compare the expression of EGFR. The chi-square test was conducted to analyze associations between EGFR expression and the different variables. The cumulative survival rate was determined by the Kaplan-Meier product-limit method. The prognosis of female patients with NSCLC was examined by using a multivariate Cox proportional hazard regression model.

Results: The expression proportion of EGFR in Chinese female NSCLC patients was 70.97%, and it was remarkably higher in adenocarcinoma than in squamous cell carcinoma and bronchioloalveolar carcinoma. A positive correlation was observed between EGFR expression and tumor-node metastasis staging or lymph node metastasis. The Cox proportional risk model analysis showed a correlation between postoperative survival time of the patients and pathology of the tumor type and lymph node metastasis.

Conclusions: Expression of EGFR was closely related to pathology of the tumor type, tumor-node metastasis staging, and lymph node metastasis, which could be used as a promising indicator of NSCLC in Chinese female patients.

No MeSH data available.


Related in: MedlinePlus