Prognostic significance of overexpressed matrix metalloproteinase-2, mouse-double minute: 2 homolog and epidermal growth factor receptor in non-small cell lung cancer.
OBJECTIVE
To evaluate the rate of overexpression of matrix metalloproteinase-2 (MMP2), mouse double minute 2 homolog (MDM2) and epidermal growth factor receptor (EGFR) in patients with non-small cell lung cancer (NSCLC), and evaluate their correlation with clinicopathological parameters and prognosis.


METHODS
This was a prospective cohort study conducted from 2003 to 2008 among 184 NSCLC patients who underwent tumor resection. Each patient's clinical history and tumor characteristics were obtained from histopathology reports and medical records. EGFR, MDM2 and MMP2 expression were assessed by immunohistochemical (IHC) staining of the tissue specimens.


RESULTS
MDM2 overexpression was observed in 70 (38%) of the patients studied, and was significantly higher in younger patients (p=0.01). Only 46 (25%) of patients had overexpression of MMP2. EGFR positive staining occurred in 105 (57%percnt;) of the evaluated tumor specimens and was more frequent in specimens with squamous cell carcinoma (p<0.001), the elderly (p<0.001), and in smokers (p<0.001). Independent risk factors for mortality were older age (adjusted odds ratio/aOR 1.3=), being a smoker (aOR 10), having stage II disease (aOR 10.8) or stage III/IV disease (aOR 28.3), expression of EGFR (aOR 5.9) and MMP2 (aOR 4.1). However, the expression of MDM2 independently predicted a reduced risk of death (aOR 0.3).


CONCLUSIONS
Overexpression of MMP2 and EGFR were independent risk factors for mortality in NSCLC patients, while overexpression of MDM2 independently predicted a reduced risk of death.
Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai Jiaotong University of Medicine College, Shanghai 200092, China.
Lian-Yong
LY
Jiang
Rui
R
Bi
Fang-Bao
FB
Ding
Ming-Song
MS
Wang
Ju
J
Mei
Yi
Y
He
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000032:analysis*; D002289:Carcinoma, Non-Small-Cell Lung / Q000737:chemistry* / Q000401:mortality / Q000473:pathology / Q000628:therapy; D016009:Chi-Square Distribution; D066246:ErbB Receptors / Q000032:analysis*; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D016015:Logistic Models; D008175:Lung Neoplasms / Q000737:chemistry* / Q000401:mortality / Q000473:pathology / Q000628:therapy; D008297:Male; D020778:Matrix Metalloproteinase 2 / Q000032:analysis*; D008875:Middle Aged; D015999:Multivariate Analysis; D016017:Odds Ratio; D011237:Predictive Value of Tests; D011379:Prognosis; D011446:Prospective Studies; D065840:Protective Factors; D051736:Proto-Oncogene Proteins c-mdm2 / Q000032:analysis*; D012307:Risk Factors; D015854:Up-Regulation
D014408:Biomarkers, Tumor; C497206:MDM2 protein, human; D051736:Proto-Oncogene Proteins c-mdm2; C512478:EGFR protein, human; D066246:ErbB Receptors; C522361:MMP2 protein, human; D020778:Matrix Metalloproteinase 2