Sistema FMUSP-HC: Faculdade de Medicina da Universidade de São Paulo (FMUSP) e Hospital das Clínicas da FMUSPDIAZ, Ana Claudia Marques BarbosaWITKIN, Steven SolALMEIDA-NETO, Cesar deMENDRONE-JUNIOR, AlfredoROCHA, VandersonCOSTA, Silvia FigueiredoRAMOS, Jessica FernandesMENDES-CORREA, Maria Cassia2024-04-052024-04-052024REVISTA DO INSTITUTO DE MEDICINA TROPICAL DE SAO PAULO, v.66, article ID e11, 8p, 20240036-4665https://observatorio.fm.usp.br/handle/OPI/58796Hepatitis C virus (HCV) infection is a significant cause of morbidity and mortality among hematopoietic stem cell transplant (HCT) recipients. In Brazil, its occurrence in HCT recipients remains undetermined. We now report on HCV prevalence in HCT recipients and its clinical consequences. The medical records of all HCT recipients seen at Hospital das Clinicas, Sao Paulo University Medical School, from January 2010 to January 2020 were reviewed to determine HCV serostatus. A retrospective analysis of medical charts was undertaken on all seropositive cases to determine HCV genotype, presence of liver fibrosis, co-infections with other viruses, previous treatments, and clinical evolution of liver pathology after HCT. Of the 1,293 HCT recipients included in the study, seven (0.54%) were HCV antibody-positive and five (0.39%) were also viremic for HCV-RNA. Four of these individuals had moderate to severe liver fibrosis (METAVIR F2/F3) and one was cirrhotic. Two of the viremic patients developed acute liver dysfunction following transplantation. All patients had their acute episode of liver dysfunction resolved with no further complications. Four of the viremic patients were treated for HCV infection with direct acting agents (DAA). Information regarding HCV treatment was lacking for one of the viremic HCV patients due to loss of follow up. Sustained anti-virologic responses were observed in three cases after the use of DAA. The detection of HCV in hematological adults undergoing HCT and its successful treatment with DAA highlight the necessity of testing for HCV both prior to and following transplantation.engopenAccessHepatitis C. Hematopoietic stem cell transplantationPrevalenceClinical outcome.bone-marrow-transplantationrisk-factorsblood-donorsb-virusserologic markersresidual riskhcvrecipientsimpacttransmissionarticleCopyright INST MEDICINA TROPICAL SAO PAULO10.1590/S1678-9946202466011Infectious DiseasesParasitologyTropical Medicine1678-9946