Prognostic value of vascular endothelial growth factor tumor tissue content of colorectal cancer.
OBJECTIVE
A longitudinal study was designed to quantify tumor tissue content of vascular endothelial growth factor (VEGF) in patients with colorectal cancer (CRC) and to evaluate its prognostic value in respect to the relapse-free and overall survivals.


METHODS
Sixty-nine patients with CRC were followed from the time of diagnosis of primary tumor for at least 3 years after surgery. Quantitative evaluation of VEGF content in tissue was performed on whole protein extracts obtained from biopsies of histologically confirmed neoplastic tissues and corresponding mucosa, histologically confirmed as 'normal'.


RESULTS
VEGF levels were higher in CRC tissues, median 141 pg/mg of protein (interquartile range 70-375), compared with corresponding normal mucosa, median 45 pg/mg of protein (interquartile range 22-78; p < 0.0001), and were associated with the stage of disease (p = 0.035) by multivariate analysis. Tumor VEGF content was higher in relapsing patients compared with those who remained disease free (p < 0.001) and was independently associated with relapse-free survival (p = 0.044). Cox's proportional hazard survival analysis demonstrated that VEGF (p = 0.035) had an independent prognostic value in respect to overall survival.


CONCLUSIONS
Elevated tumor VEGF content may discriminate between early and late stages of CRC and may be used as an independent prognostic parameter in the management of these patients.
Ferroni
Patrizia
P
Department of Experimental Medicine and Pathology, University La Sapienza, Italy. patrizia.ferroni@uniroma1.it
Spila
Antonella
A
Martini
Francesca
F
D'Alessandro
Roberta
R
Mariotti
Sabrina
S
Del Monte
Girolamo
G
Graziano
Paolo
P
Buonomo
Oreste
O
Guadagni
Fiorella
F
Roselli
Mario
M
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001706:Biopsy; D015179:Colorectal Neoplasms / Q000473:pathology* / Q000601:surgery; D018572:Disease-Free Survival; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging / Q000379:methods*; D011379:Prognosis; D012016:Reference Values; D012307:Risk Factors; D042461:Vascular Endothelial Growth Factor A / Q000032:analysis*
D042461:Vascular Endothelial Growth Factor A