Monitoring of alphatorquevirus DNA levels for the prediction of immunosuppression‐related complications after kidney transplantation |
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Authors: | Mario Fernndez‐Ruiz Eliseo Albert Estela Gimnez Tamara Ruiz‐Merlo Patricia Parra Francisco Lpez‐Medrano Rafael San Juan Natalia Polanco Amado Andrs David Navarro Jos María Aguado |
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Institution: | Mario Fernández‐Ruiz,Eliseo Albert,Estela Giménez,Tamara Ruiz‐Merlo,Patricia Parra,Francisco López‐Medrano,Rafael San Juan,Natalia Polanco,Amado Andrés,David Navarro,José María Aguado |
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Abstract: | The replication kinetics of nonpathogenic anelloviruses belonging to the Alphatorquevirus genus (such as torque teno virus) might reflect the overall state of posttransplant immunosuppression. We analyzed 221 kidney transplant (KT) recipients in whom plasma alphatorquevirus DNA load was quantified by real‐time polymerase chain reaction at baseline and regularly through the first 12 posttransplant months. Study outcomes included posttransplant infection and a composite of opportunistic infection and/or de novo malignancy (immunosuppression‐related adverse event iRAE]). Alphatorquevirus DNA loads at month 1 were higher among patients who subsequently developed posttransplant infection (P = .023) or iRAE (P = .009). Likewise, those with iRAE beyond months 3 and 6 also exhibited higher peak viral loads over the preceding periods. Areas under the curve for log10 alphatorquevirus DNAemia estimated by months 1 or 6 were significantly higher in patients experiencing study outcomes. Alphatorquevirus DNA loads above 3.15 and 4.56 log10 copies/mL at month 1 predicted the occurrence of posttransplant infection (adjusted hazard ratio aHR]: 2.88; 95% confidence interval CI]: 1.13‐7.36; P = .027) and iRAE (aHR: 5.17; 95% CI: 2.01‐13.33; P = .001). In conclusion, posttransplant monitoring of plasma alphatorquevirus DNA kinetics may be useful to identify KT recipients at increased risk of immunosuppression‐related complications. |
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Keywords: | biomarker clinical research/practice complication: infectious complication: malignant infection and infectious agents infection and infectious agents – viral infectious disease kidney transplantation/nephrology |
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