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[Expression of FOXP1 and cyclinE in primary central nervous system lymphoma and its significance]
Lin Shen1, Bo-bin Chen, Zi Chen
1Huashan Hospital, Fudan University, Shanghai, China.
Objective:
To evaluate the value of FOXP1 and Cyclin E gene in primary central nervous system lymphoma(PCNSL) of immunocompetent patients on prognostic significance.
Methods:
Clinical data of 71 patients with newly diagnosed PCNSL from 2002 to 2007 was analyzed retrospectively. Immunohistochemistry method (HRP-EnVision(TM)) was performed to observe the expression of FOXP1 and Cyclin E gene in tumor tissue samples. The survival was analyzed by Kaplan-Meier survival curve, survival factors analysis by the Log-rank test and COX proportional hazards regression model.
Results:
FOXP1 positive was observed in 35 of 51 patients (68.63%) and Cyclin E staining was present in 29 of 50 cases (58.00%). FOXP1(+) patients had a shorter overall survival (OS) than FOXP1(-) ones. 2-year OS rate in FOXP1(+) and FOXP1(-) patients were 23.33% and 73.56%, respectively(P = 0.0015). Cyclin E(+) patients had a shorter overall survival(OS) than cyclinE(-) ones. 2-year OS rate in Cyclin E(+) and Cyclin E(-) patients were 17.56% and 69.76%, respectively (P = 0.0017). Multivariate analysis showed that Cyclin E expression was an independent prognostic factor for shorter OS (P = 0.048). FOXP1 expression might be an important prognostic factor for shorter OS (P = 0.065).
Conclusion:
Cyclin E expression is an independent prognostic factor and FOXP1 expression is a possible prognostic factor for poor clinical outcome in patients with PCNSL.
