Incidence of opportunistic viral infections in hepatitis C virus nucleic acid test negative recipients of kidneys from hepatitis C virus nucleic acid test positive donors.

Background: In kidney transplantation, concerns have been raised regarding increased incidence of viral opportunistic infections in hepatitis C virus (HCV) nucleic acid test (NAT)‐negative (‐) recipients who received HCV NAT‐positive (+) donor kidneys, specifically BK polyomavirus (BKPyV), cytomegalovirus (CMV), and Epstein‐Barr virus (EBV). The purpose of this study was to determine the incidence of these three viral opportunistic infections in HCV NAT‐ recipients who have undergone kidney transplantation with HCV NAT+ donor kidneys at our institution. Methods: This was an Institutional Review Board‐approved, single‐center, retrospective case‐control study of HCV NAT‐ kidney transplant recipients with HCV NAT+ donors from 2018 to 2021. The primary outcome was the cumulative incidence of viral infections of BKPyV, CMV, and/or EBV within 1 year following kidney transplantation. Results: A total of 231 patients were included, 77 in the exposed (donor HCV NAT+) group and 154 in the control (donor HCV NAT‐) group. The adjusted cumulative incidence of viremia within 1 year did not statistically differ between groups (77% exposed group versus 66% for the control group, hazard ratio 1.34, 95% confidence interval 0.95–1.89). In addition, no statistically significant differences were observed for secondary outcomes with the exception of CMV viremia (62% exposed versus 49% control, p = 0.021). However, there were more patients in the exposed group at high risk for CMV viremia based on serostatus (CMV Donor+/Recipient‐, D+/R‐). Conclusion: Among patients who received HCV NAT+ donor kidneys, no clear association was observed between exposure to HCV NAT+ donor kidneys and viral infections of BKPyV, CMV, or EBV. [ABSTRACT FROM AUTHOR]