Mingming Hou1, Rui Huang2, Yanni Song3, Di Feng4, Yang Jiang4, Ming Liu5. 1. Department of Orthopedics, The Fourth Affiliated Hospital of Harbin Medical University, Harbin. 2. Department of Colorectal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin. 3. Department of Breast Surgery, The Third Affiliated Hospital of Harbin Medical University, Harbin. 4. Department of Pathology, The Third Affiliated Hospital of Harbin Medical University, Harbin. 5. Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China herodoc@126.com.
Abstract
OBJECTIVES: ATPase family AAA domain-containing 2 plays an important role in tumor progression including cell cycle, proliferation, apoptosis and chemoresistance. However, the expression of ATPase family AAA domain-containing 2 in colorectal cancer and its significance are still unclear. The aim of this study was to examine the expression of ATPase family AAA domain-containing 2 in colorectal cancer. METHODS: Immunohistochemistry was used to determine the expression of ATPase family AAA domain-containing 2 in 155 colorectal cancer and 30 matched adjacent noncancerous tissues. The correlation of ATPase family AAA domain-containing 2 expression with clinicopathological variables was assessed using chi-square test. Patient survival was analyzed using the Kaplan-Meier and log-rank tests. Cox regression was performed for the multivariate analysis of prognostic factors. RESULTS: High expression of ATPase family AAA domain-containing 2 was detected in 58.1% of the colorectal cancers and was significantly associated with advanced tumor-node-metastasis stage (P = 0.044), poor differentiation (P = 0.028), deep infiltration (P < 0.001), lymphovascular invasion (P = 0.006), lymph node metastasis (P = 0.024) and recurrence (P = 0.022). Patients with high ATPase family AAA domain-containing 2 expression had significantly poorer overall survival and disease-free survival (both P < 0.001) when compared with patients with low expression of ATPase family AAA domain-containing 2. The multivariate analysis showed that ATPase family AAA domain-containing 2 was an independent factor for both overall survival (P = 0.003; hazard ratio (HR): 2.356; 95% confidence interval (CI): 1.335-4.158) and disease-free survival (P = 0.001; HR: 2.643; 95% CI: 1.489-4.693). CONCLUSIONS: These results showed that ATPase family AAA domain-containing 2 overexpression was associated with progression and prognosis of colorectal cancer.
OBJECTIVES:ATPase family AAA domain-containing 2 plays an important role in tumor progression including cell cycle, proliferation, apoptosis and chemoresistance. However, the expression of ATPase family AAA domain-containing 2 in colorectal cancer and its significance are still unclear. The aim of this study was to examine the expression of ATPase family AAA domain-containing 2 in colorectal cancer. METHODS: Immunohistochemistry was used to determine the expression of ATPase family AAA domain-containing 2 in 155 colorectal cancer and 30 matched adjacent noncancerous tissues. The correlation of ATPase family AAA domain-containing 2 expression with clinicopathological variables was assessed using chi-square test. Patient survival was analyzed using the Kaplan-Meier and log-rank tests. Cox regression was performed for the multivariate analysis of prognostic factors. RESULTS: High expression of ATPase family AAA domain-containing 2 was detected in 58.1% of the colorectal cancers and was significantly associated with advanced tumor-node-metastasis stage (P = 0.044), poor differentiation (P = 0.028), deep infiltration (P < 0.001), lymphovascular invasion (P = 0.006), lymph node metastasis (P = 0.024) and recurrence (P = 0.022). Patients with high ATPase family AAA domain-containing 2 expression had significantly poorer overall survival and disease-free survival (both P < 0.001) when compared with patients with low expression of ATPase family AAA domain-containing 2. The multivariate analysis showed that ATPase family AAA domain-containing 2 was an independent factor for both overall survival (P = 0.003; hazard ratio (HR): 2.356; 95% confidence interval (CI): 1.335-4.158) and disease-free survival (P = 0.001; HR: 2.643; 95% CI: 1.489-4.693). CONCLUSIONS: These results showed that ATPase family AAA domain-containing 2 overexpression was associated with progression and prognosis of colorectal cancer.
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