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Chen H, Liu J, Kang Q, Luo H, Tan N, Pan J, Yang Y, Yu M, Liu D, Xi H, Han Y, Cheng R, Yu Y, Xu X. Resistant-Associated Substitutions Do Not Affect HCV RNA and HCV Core Antigen Clearance During Direct-Acting Antiviral Agent Treatment in a Real-World Setting. Infect Drug Resist 2022; 15:3373-3380. [PMID: 35789797 PMCID: PMC9250317 DOI: 10.2147/idr.s352873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 06/09/2022] [Indexed: 11/23/2022] Open
Abstract
Background Since oral direct-acting antiviral agents (DAAs) became available, the global hepatitis C treatment situation has undergone tremendous changes. However there are still many issues worthy of attention in treatment. Methods We selected 53 HCV-infected patients who were treated and followed up in the Peking University First Hospital from December 2017 to January 2021 to detect the RASs in HCV. Pearson correlation analysis was used to analyze HCV RNA and HCV cAg, the Fisher exact test and chi-square test was used to compare the effects of RASs on the rate of decline of HCV RNA and HCV core antigen (cAg) during DAA treatment. Results The RASs and its prevalence on the NS3 are mainly Y56F 2.56% (1/39), Q80K 23.08% (9/39), S122G 71.79% (28/39), and V170I 38.46% (15/39). On the NS5A were R30Q 10.53% (4/38), P32A 5.26% (2/38), P58S 2.63% (1/39), and Y93H 21.05% (8/38). On NS5B were C316N 71.05% (27/38), C451H 2.63% (1/38), and I585C 2.63% (1/38). There was no significant correlation between the RASs (Y93H, V179I, Q80K, S122G, C316N) and HCV genotype (p > 0.05). The baseline serum HCV RNA and HCV cAg had a significant medium-degree correlation (r = 0.601, p = 0.002). After 1 week of DAA treatment was weak correlation (r = 0.413, p = 0.032). Q80K, S122G, V170I, Y93H, and C316N had no effect on the clearance of HCV RNA and HCV cAg within the first week of DAA treatment (p>0.05). Conclusion The HCV genotype may have a limited impact on the presence of the five RASs (Y93H, V179I, Q80K, S122G, and C316N) as shown in this study. HCV RNA and HCV cAg have a correlation, especially at baseline is the highest; the appearance of some RASs has no effect on DAA treatment in most chronic hepatitis C patients.
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Affiliation(s)
- Hongyu Chen
- Departments of Infectious Diseases, Peking University First Hospital, Beijing, People's Republic of China
| | - Jianxiang Liu
- Department of Gastroenterology, Peking University First Hospital, Beijing, People's Republic of China
| | - Qian Kang
- Departments of Infectious Diseases, Peking University First Hospital, Beijing, People's Republic of China
| | - Hao Luo
- Departments of Infectious Diseases, Peking University First Hospital, Beijing, People's Republic of China
| | - Ning Tan
- Departments of Infectious Diseases, Peking University First Hospital, Beijing, People's Republic of China
| | - Jiali Pan
- Departments of Infectious Diseases, Peking University First Hospital, Beijing, People's Republic of China
| | - Yuqing Yang
- Departments of Infectious Diseases, Peking University First Hospital, Beijing, People's Republic of China
| | - Min Yu
- Departments of Infectious Diseases, Peking University First Hospital, Beijing, People's Republic of China
| | - Dan Liu
- Departments of Infectious Diseases, Peking University First Hospital, Beijing, People's Republic of China
| | - Hongli Xi
- Departments of Infectious Diseases, Peking University First Hospital, Beijing, People's Republic of China
| | - Yifan Han
- Departments of Infectious Diseases, Peking University First Hospital, Beijing, People's Republic of China
| | - Ran Cheng
- Departments of Infectious Diseases, Peking University First Hospital, Beijing, People's Republic of China
| | - Yanyan Yu
- Departments of Infectious Diseases, Peking University First Hospital, Beijing, People's Republic of China
| | - Xiaoyuan Xu
- Departments of Infectious Diseases, Peking University First Hospital, Beijing, People's Republic of China
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Using Treponemal Assay Signal Strength Cutoff Ratios To Predict Syphilis Infection. J Clin Microbiol 2017; 56:JCM.01555-17. [PMID: 29046409 DOI: 10.1128/jcm.01555-17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Syphilis screening with the reverse algorithm, a treponemal test for screening followed by a nontreponemal test if reactive, is increasingly being used. That algorithm has several advantages, including use of an automated screening test, saving on laboratory time and costs, as well as detection of very early syphilis infection. However, under that algorithm, in situations where the treponemal result is positive and the nontreponemal result is nonreactive a second treponemal test must be performed, which may actually lead to inefficiencies in the laboratory. In this issue of the Journal of Clinical Microbiology, Y. F. Fakile et al. (J Clin Microbiol 56:e01165-17, 2017, https://doi.org/10.1128/JCM.01165-17) report the results of their study, which demonstrates the capability of signal strength ratio cutoffs for automated treponemal immunoassays to predict the outcome of repeat treponemal testing. Their findings suggest that anti-treponemal signal strength ratio values above a cutoff value can be used in lieu of repeat treponemal tests.
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