Clinicopathological significance and prognostic value of LRP16 expression in colorectal carcinoma.
OBJECTIVE
To explore the expression of leukemia related protein 16 (LRP16) in colorectal carcinoma, and analyze its correlation with clinicopathologic features and prognosis.


METHODS
Immunohistochemistry for LRP16 was performed in 201 cases of colorectal carcinoma and 60 cases of distal normal mucosa. Medical records were reviewed and clinicopathological analysis was performed.


RESULTS
LRP16 expression was detected in 117 of 201 cases of the colorectal carcinoma and in 21 cases of 60 distal normal mucosa. The expression of LRP16 in carcinoma was significantly higher than that in normal mucosa (chi(2) = 9.999, P = 0.002). LRP16 protein expression was found in 43.3% (52/120) of carcinoma at stage I and II, and 80.2% (65/81) of carcinoma at stage III and IV (chi(2) =27.088, P = 0.001). Correlation between LRP16 expression and clinicopathological factors was significant in differentiation (P = 0.010), tumor size (P = 0.001), infiltrative depth (P = 0.000) and distant metastasis (P = 0.027). The difference of median survival time between cancer patients with LRP16 expression (38.0 mo) and those without was statistically significant (105.0 mo, Log rank = 41.455, P = 0.001). The multivariate survival analysis revealed that LRP16 expression was correlated significantly (Cox's regression: P = 0.001, relative risk = 2.082) with shortened survival in the patients with colorectal cancer.


CONCLUSIONS
The expression of LRP16 is related to the degree of differentiation, invasiveness, metastasis and prognosis of colorectal carcinoma.
Xi
Hong Qing
HQ
Department of Pathology, Chinese People's Liberation Army General Hospital, Beijing 100853, China.
Zhao
Po
P
Han
Wei Dong
WD
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002265:Carboxylic Ester Hydrolases; D002277:Carcinoma / Q000175:diagnosis / Q000378:metabolism*; D015179:Colorectal Neoplasms / Q000175:diagnosis / Q000378:metabolism*; D005260:Female; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D007150:Immunohistochemistry / Q000379:methods; D007413:Intestinal Mucosa / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009363:Neoplasm Proteins / Q000096:biosynthesis* / Q000502:physiology*; D011379:Prognosis; D016016:Proportional Hazards Models
D009363:Neoplasm Proteins; D002265:Carboxylic Ester Hydrolases; C476832:MACROD1 protein, human