Abstract
To explore the correlation of EB virus infection with the prognosis of B-ALL children. The peripheral blood of children with newly diagnosed B-ALL admitted in Children's Hospital of Chongqing Medical University from January 2012 to December 2017 were collected, and the EBV DNA in plasma was detected by real-time quantitative PCR. The clinical data of B-ALL children were collected and the correlation of EBV infection with the prognosis of B-ALL children was analyzed. Among 162 B-ALL children, the EBV infection rate was 41.36%. Univariate analysis showed that the B-ALL children with EBV infection had the poor prognosis and higher risk of shorter survival time, as compared with B-ALL children without EBV infection (HR=2.373, 95% CI: 1.129-4.987) (P＜0.05), the multivariate analysis showed that the result was consistent with result of univariate analysis indicating that EBV infection was an independent predictor for poor prognosis of B-ALL children. The EBV infection may play an important role in the occurrence and progression of B-ALL and is an independent predictor for poor prognosis, therefore the detection of EBV DNA in plasma of B-ALL children possesses an important significance for evaluation of B-ALL children's prognosis.
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