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Abstract
Epstein-Barr virus (EBV) is involved in the development of a wide range of B cell lympho-proliferative disorders. Its association with plasma cell disorders (PCD) however is not clear, especially in immunocompetent patients. To explore any relationship, 39 patients of suspected PCD with positive M-band on electrophoresis and 50 healthy controls were enrolled. EBV DNA in peripheral blood was quantified using quantitative Real Time Polymerase Chain Reaction (qPCR). Of 39 patients, 15 (38.5%) had EBV DNA compared to 8/50 (16%) controls (p = 0.0008). The mean viral copy number was found to be significantly high in patients compared to controls (1.8 × 105; range = 2.6 × 103-7.6 × 105 copies/ml and 1.7 × 104; range = 7.0 × 102-6.1 × 104 copies/ml respectively; p = 0.003). This is the first study, which characterizes the frequency of EBV in circulation in patients of PCD. The significance of increased prevalence of circulating EBV and a higher viral load in our immunocompetent patients however, needs further evaluation.
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