Correlation between RhoA overexpression and tumour progression in esophageal squamous cell carcinoma.
OBJECTIVE
The aim of this study was to clarify the clinico-pathologic outcome and prognostic significance of RhoA in esophageal squamous cell carcinoma (ESCC).


METHODS
Immunohistochemical staining for RhoA was performed on surgical specimens obtained from 122 patients with ESCC.


RESULTS
There were significant correlations among RhoA overexpression and TNM clinical classification (depth of invasion, P=0.028; presence of regional lymph node metastasis, P=0.009; presence of distant metastasis, P=0.003; staging P=0.006), lymphatic invasion (P=0.002), and blood-vessel invasion (P=0.004). The five-year survival rates for ESCC patients with RhoA overexpression were significantly lower than those in patients with RhoA under-expression (P=0.002).


CONCLUSIONS
Our results demonstrated immunohistochemically that the expression of RhoA protein appeared to be correlated with tumour progression of ESCC. Patients with RhoA overexpression tended to have poor prognosis compared with patients with RhoA under-expression.
Faried
A
A
Department of General Surgical Science (Surgery I), Graduate School of Medicine, Gunma University, Maebashi, Gunma 371-8511, Japan. afaried@med.gunma-u.ac.jp
Nakajima
M
M
Sohda
M
M
Miyazaki
T
T
Kato
H
H
Kuwano
H
H
D000328:Adult; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000378:metabolism* / Q000473:pathology*; D016009:Chi-Square Distribution; D018450:Disease Progression; D004938:Esophageal Neoplasms / Q000378:metabolism* / Q000473:pathology*; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D016019:Survival Analysis; D020742:rhoA GTP-Binding Protein / Q000378:metabolism*
D020742:rhoA GTP-Binding Protein