ArticleInfection and drug resistance2022
High Prevalence of Doravirine Resistance in HIV-1-Infected Patients with Virological Failure to an NNRTI-Based Single-Tablet Regimen.
Article in Infection and drug resistance, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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5 authors at 4 institutions in 1 country.
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Abstract
Purpose: This study aimed to investigate the prevalence of resistance to a non-nucleoside reverse transcriptase inhibitor (NNRTI)-based single-tablet regimen (STR) in Taiwanese patients and clarify the clinical implications of using doravirine in patients who fail NNRTI treatment. Patients and Methods: Taiwanese patients infected with HIV-1 who failed NNRTI-based STR treatment were enrolled in this retrospective cohort study from 2015 to 2020. Mutations associated with drug resistance were identified using the 2019 International Antiviral Society-USA list of drug-resistant mutations in HIV, and drug susceptibility was assessed according to the Stanford HIV Drug Resistance Database version 9. Median values of continuous variables were compared between two groups using the Mann-Whitney Results: A total of 107 patients were included, of whom 29 were treatment failure to the initial STRs, and 78 failed treatment after switching to an STR. Seventy-four patients failed treatment with TDF/FTC/EFV (Atripla), 30 with TDF/FTC/RPV (Complera) and 3 with TAF/FTC/RPV (Odefsey). The prevalence rates of resistance to nucleoside reverse transcriptase inhibitors (NRTIs), NNRTIs, protease inhibitors (PIs) and integrase strand transfer inhibitors (INSTIs) were 76%, 86%, 3% and 2%, respectively. Among the 29 patients failure to the initial STRs, 62% developed doravirine resistance, compared to 64% of the 78 the patients who failed treatment after switching to an STR. There were no significant differences in the prevalence of specific NNRTI or doravirine resistance-associated mutations between these two groups. The patients with K65R mutations were more likely to have NNRTI resistance (p = 0.037) and doravirine resistance (p < 0.001). Conclusion: Our findings showed a high rate of doravirine cross-resistance in patients with NNRTI-based STR treatment failure. Doravirine should be used cautiously as a salvage regimen in patients who fail NNRTI treatment.
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