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Introduction: There have been no prospective clinical studies investigating adherence and tolerability of HIV post-exposure prophylaxis (PEP) in China. Tolerability, adherence, and transmitted drug resistance are concerns, especially when single-tablet regimen (STR) usage is low. The present study aimed to explore the safety, tolerability, and adherence of regimens containing albuvirtide (ABT) compared with recommended non-STR antiretrovirals for HIV PEP. Methods: This was a prospective, open-label, multicenter cohort study. The subjects were stratified into 3 groups based on their preference: ABT ? Dolutegravir (DTG) (Group 1), ABT ? Tenofovir disoproxil fumarate (TDF) ? Lamivudine (3TC) (Group 2), and DTG ? TDF ? 3TC (Group 3). All enrolled subjects received PEP within 72 h after exposure and continued for 28 days, and were followedup for 12 weeks. Results: A total of 330 participants were enrolled in the three groups. Most participants were male (87.2%). Sexual contact was the most frequent mode of exposure (91.9%). The average time from exposure to treatment was 26.8 ± 19.5 h. There were no statistically significant differences between the three study groups with respect to completion of oral medication at 28 days. The 28-day completion rate was shown to be significantly higher with ABT versus oral (88.9% vs. 64.0%; p\0.0001), and adherence with ABT was 94.4% compared to 75.7% with oral PEP (p\0.0001). Subjects in ABT-containing Group 1 exhibited higher adherence than those in Group 3 (87.3% vs. 72.9%; p\0.05). None of the participants reported serious adverse drug reactions which led to withdrawal from the study. All the drug regimens were found to be safe and well tolerated. No HIV incident case was observed during the study period.Conclusions: ABT-containing regimens (ABT ? DTG or ABT ? TDF ? 3TC) offer a good option for HIV PEP due to higher completion rates and adherence than the DTG ? TDF ? 3TC regimen. The overall safety was comparable and acceptable among the three groups.Jingmin Nie and Feng Sun have contributed equally to this work.

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