RT Journal Article T1 Evaluation of hepatitis C viral RNA persistence in HIV-infected patients with long-term sustained virological response by droplet digital PCR. A1 Frias, Mario A1 Rivero-Juarez, Antonio A1 Tellez, Francisco A1 Palacios, Rosario A1 Jimenez-Arranz, Alvaro A1 Pineda, Juan A A1 Merino, Dolores A1 Gomez-Vidal, Maria Amparo A1 Perez-Camacho, Ines A1 Camacho, Angela A1 Rivero, Antonio K1 AGS - Campo de Gibraltar Oeste AB Several studies have reported the persistence of HCV RNA in liver and/or peripheral blood mononuclear cells (PBMCs) in spite of undetectable viremia in patients who have achieved sustained virological response (SVR). This event, defined as occult HCV infection, remains controversial and low titers of persistent virus may be underestimated because it has not yet been analyzed by a highly sensitive test such as droplet digital PCR (ddPCR). This method provides an alternate ultra-sensitive detection technique for very low numbers of copies of viral RNA or DNA. The aim of this study was to evaluate the persistence of HCV in HIV-coinfected patients with long-term SVR using ddPCR. For each patient, the presence of HCV RNA in serum and PBMCs at baseline was determined by nested RT-ddPCR. Patients with HCV RNA in PBMCs at baseline were followed until the end of the study. One hundred and twenty-three patients were analyzed for persistence of HCV RNA in serum and PBMCs. Persistence of HCV was not found in serum in any patient. HCV RNA was detected in PBMCs in one patient (0.81%; 95% CI: 0.04-3.94) and resolved spontaneously during follow-up. Persistence of HCV RNA in PBMCs is not a common event in HIV/HCV co-infected patients with long-term SVR evaluated by RT-ddPCR. PB Nature Publishing Group YR 2019 FD 2019-08-13 LK http://hdl.handle.net/10668/14458 UL http://hdl.handle.net/10668/14458 LA en NO Frías M, Rivero-Juárez A, Téllez F, Palacios R, Jiménez-Arranz Á, Pineda JA, et al. Evaluation of hepatitis C viral RNA persistence in HIV-infected patients with long-term sustained virological response by droplet digital PCR. Sci Rep. 2019 Aug 29;9(1):12507 NO This work was supported by the Fundación Progreso y Salud, Consejería de Salud de la Junta de Andalucía (grants for health research projects: refs. PI0036/2010; PI0187/2013), the Ministerio de Sanidad (RD12/0017/0012) integrated in the Plan Nacional de I+D+I, and cofnanced by the ISCIII-Subdirección General de Evaluación and the Fondo Europeo de Desarrollo Regional (FEDER), the Fundación para la Investigación en Salud (FIS) del Instituto Carlos III (PI15/01017), and the Red de Investigación en SIDA de España ISCIII-RETIC (Grant Number: RD16/0025/0034). A. Rivero Juárez and M. Frías are the recipient of a Miguel Servet and Sara Borrell postdoctoral perfection grants by the Ministerio de Ciencia, Innovación y Universidades of Spain (CP18/00111) and (CD18/00091), respectively. DS RISalud RD Apr 11, 2025