Determination of viremia cut-off for risk to develop BKPyV-associated nephropathy among kidney transplant recipients

Autor(es)

Bicalho, Camila Silva ^[1] ; Oliveira, Renato dos Reis ^[2] ; David, Daisa Ribeiro ^[3] ; Domingues Silva Fink, Maria Cristina ^[2] ; Agena, Fabiana ^[4] ; Castro, Maria Cristina ^[4] ; Panutti, Claudio ^[2] ; David-Neto, Elias ^[4] ; Pierrotti, Ligia Camera ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Fac Med, Hosp Clin, Dept Infect Dis, Av Eneas de Carvalho Aguiar 255 S 7227, BR-05403900 Sao Paulo - Brazil

^[2] Univ Sao Paulo, Sao Paulo Inst Trop Med, Sao Paulo - Brazil

^[3] Univ Sao Paulo, Fac Med, Hosp Clin, Dept Pathol, Sao Paulo - Brazil

^[4] Univ Sao Paulo, Fac Med, Hosp Clin, Renal Transplantat Serv, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: TRANSPLANT INFECTIOUS DISEASE; v. 20, n. 5 OCT 2018.
• Citações Web of Science: 2

Resumo

BackgroundBK polyomavirus (BKPyV)-associated nephropathy (BKPyVAN) is a consequence of BKPyV replication in the urinary tract in kidney transplant recipients (KTR). ObjectivesThe objectives were to determine the prevalence of BKPyV replication and BKPyVAN, risk factors associated to sustained viremia and BKPyVAN, and viremia cut-off that best predict the occurrence of sustained viremia and nephropathy in KTR of a single University Hospital Kidney Transplant Center. Patients and MethodsAll KTR undergoing transplantation from August 2010 to December 2011 were enrolled and monitored up to 2years posttransplantation for BKPyV viruria by decoy cells shedding or polymerase chain reaction (PCR) and viremia by PCR. Kidney biopsy was indicated if sustained viremia (two or more viremia above 10000copies/mL) to confirm BKPyVAN diagnosis. ResultsIn this study, 326 transplants were performed and 246 patients were included. Prevalence of viruria was 36.9%, viremia 22.3% and nephropathy 3.2%. Male gender was the only risk factor associated to sustained viremia or nephropathy. Cut-off value of viremia that best discriminates the progression to sustained viremia and to BKPyVAN was 37488 and 44956copies/mL, respectively. ConclusionsPrevalence of viruria, viremia, and nephropathy were similar to those reported in literature but the cut-off value of viremia that best discriminates the risk of progression to nephropathy was greater than the value usually reported, which is 10000copies/mL. (AU)

• Processo FAPESP: 10/01710-3 - Determinação da prevalência e caracterização molecular dos poliomavírus humanos - bk e jc - em pacientes submetidos a transplante renal
• Beneficiário: Renato dos Reis Oliveira
• Linha de fomento: Bolsas no Brasil - Doutorado