1
|
Scallon AJ, Hassan SA, Qian SR, Gao Y, Oyaro P, Brown E, Wagude J, Mukui I, Kinywa E, Oluoch F, Odhiambo F, Oyaro B, Kingwara L, Yongo N, Karauki E, Otieno L, John-Stewart GC, Abuogi LL, Patel RC. "I feel drug resistance testing allowed us to make an informed decision": qualitative insights on the role of HIV drug resistance mutation testing among children and pregnant women living with HIV in western Kenya. BMC Health Serv Res 2023; 23:908. [PMID: 37620855 PMCID: PMC10463841 DOI: 10.1186/s12913-023-09804-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Accepted: 07/10/2023] [Indexed: 08/26/2023] Open
Abstract
BACKGROUND Pregnant women and children living with HIV in Kenya achieve viral suppression (VS) at lower rates than other adults. While many factors contribute to these low rates, the acquisition and development of HIV drug resistance mutations (DRMs) are a contributing factor. Recognizing the significance of DRMs in treatment decisions, resource-limited settings are scaling up national DRM testing programs. From provider and patient perspectives, however, optimal ways to operationalize and scale-up DRM testing in such settings remain unclear. METHODS Our mixed methods study evaluates the attitudes towards, facilitators to, and barriers to DRM testing approaches among children and pregnant women on antiretroviral therapy (ART) in five HIV treatment facilities in Kenya. We conducted 68 key informant interviews (KIIs) from December 2019 to December 2020 with adolescents, caregivers, pregnant women newly initiating ART or with a high viral load, and providers, laboratory/facility leadership, and policy makers. Our KII guides covered the following domains: (1) DRM testing experiences in routine care and through our intervention and (2) barriers and facilitators to routine and point-of-care DRM testing scale-up. We used inductive coding and thematic analysis to identify dominant themes with convergent and divergent subthemes. RESULTS The following themes emerged from our analysis: (1) DRM testing and counseling were valuable to clinical decision-making and reassuring to patients, with timely results allowing providers to change patient ART regimens faster; (2) providers and policymakers desired an amended and potentially decentralized DRM testing process that incorporates quicker sample-to-results turn-around-time, less burdensome procedures, and greater patient and provider "empowerment" to increase comfort with testing protocols; (3) facility-level delays, deriving from overworked facilities and sample tracking difficulties, were highlighted as areas for improvement. CONCLUSIONS DRM testing has the potential to considerably improve patient health outcomes. Key informants recognized several obstacles to implementation and desired a more simplified, time-efficient, and potentially decentralized DRM testing process that builds provider comfort and confidence with DRM testing protocols. Further investigating the implementation, endurance, and effectiveness of DRM testing training is critical to addressing the barriers and areas of improvement highlighted in our study. TRIAL REGISTRATION NCT03820323.
Collapse
Affiliation(s)
- Andrea J Scallon
- Jackson School of International Studies, University of Washington, Seattle, USA
| | - Shukri A Hassan
- Department of Medicine, University of Washington, 325 9th Ave, Seattle, WA, 98105, USA
| | | | - Yuandi Gao
- School of Public Health, University of Washington, Seattle, USA
| | | | | | | | - Irene Mukui
- Drugs for Neglected Diseases Initiative, Nairobi, Kenya
| | | | | | - Francesca Odhiambo
- Family AIDS Care and Education Services, Kenya Medical Research Institute, Kisumu, Kenya
| | - Boaz Oyaro
- Kenya Medical Research Institute-CDC, Kisian, Kenya
| | - Leonard Kingwara
- National HIV Reference Laboratory, Ministry of Health, Nairobi, Kenya
| | | | | | - Lindah Otieno
- Family AIDS Care and Education Services, Kenya Medical Research Institute, Kisumu, Kenya
| | - Grace C John-Stewart
- Department of Medicine, University of Washington, 325 9th Ave, Seattle, WA, 98105, USA
- Departments of Global Health, University of Washington, 325 9th Ave, WA, 98105, Seattle, USA
- Department of Pediatrics, University of Washington, Seattle, USA
- Department of Epidemiology, University of Washington, Seattle, USA
| | - Lisa L Abuogi
- Department of Pediatrics, University of Colorado, Denver, USA
| | - Rena C Patel
- Department of Medicine, University of Washington, 325 9th Ave, Seattle, WA, 98105, USA.
- Departments of Global Health, University of Washington, 325 9th Ave, WA, 98105, Seattle, USA.
| |
Collapse
|
2
|
Yap JK, Gauran IIM. Bayesian variable selection using Knockoffs with applications to genomics. Comput Stat 2022; 38:1-20. [PMID: 36157067 PMCID: PMC9483350 DOI: 10.1007/s00180-022-01283-8] [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: 03/22/2021] [Accepted: 09/08/2022] [Indexed: 11/25/2022]
Abstract
Given the costliness of HIV drug therapy research, it is important not only to maximize true positive rate (TPR) by identifying which genetic markers are related to drug resistance, but also to minimize false discovery rate (FDR) by reducing the number of incorrect markers unrelated to drug resistance. In this study, we propose a multiple testing procedure that unifies key concepts in computational statistics, namely Model-free Knockoffs, Bayesian variable selection, and the local false discovery rate. We develop an algorithm that utilizes the augmented data-Knockoff matrix and implement Bayesian Lasso. We then identify signals using test statistics based on Markov Chain Monte Carlo outputs and local false discovery rate. We test our proposed methods against non-bayesian methods such as Benjamini-Hochberg (BHq) and Lasso regression in terms TPR and FDR. Using numerical studies, we show the proposed method yields lower FDR compared to BHq and Lasso for certain cases, such as for low and equi-dimensional cases. We also discuss an application to an HIV-1 data set, which aims to be applied analyzing genetic markers linked to drug resistant HIV in the Philippines in future work.
Collapse
Affiliation(s)
- Jurel K. Yap
- School of Statistics, University of the Philippines Diliman, Quezon City, Philippines
- School of Government, Ateneo de Manila University, Quezon City, Philippines
| | - Iris Ivy M. Gauran
- Biostatistics Group, Computer, Electrical, Mathematical Sciences, and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| |
Collapse
|
3
|
Antiretroviral (ARV) Drug Resistance and HIV-1 Subtypes among Injecting Drug Users in the Coastal Region of Kenya. Adv Virol 2022; 2022:3217749. [PMID: 35186083 PMCID: PMC8853818 DOI: 10.1155/2022/3217749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 01/18/2022] [Indexed: 11/21/2022] Open
Abstract
HIV-1 genetic diversity results into the development of widespread drug-resistant mutations (DRMs) for the first-line retroviral therapy. Nevertheless, few studies have investigated the relationship between DRMs and HIV-1 subtypes among HIV-positive injecting drug users (IDUs). This study therefore determined the association between HIV-1 genotypes and DRMs among the 200 IDUs. Stanford HIV Drug Resistance Database was used to interpret DRMs. The five HIV-1 genotypes circulating among the IDUs were A1 (25 (53.2%)), A2 (2 (4.3%)), B (2 (4.3%)), C (9 (19.1%)), and D (9 (19.1%)). The proportions of DRMs were A1 (12 (52.2%)), A2 (1 (4.3%)), B (0 (0.0%)), C (5 (21.7%)), and D (5 (21.7%)). Due to the large proportion of drug resistance across all HIV-1 subtypes, surveillance and behavioral studies need to be explored as IDUs may be spreading the drug resistance to the general population. In addition, further characterization of DRMs including all the relevant clinical parameters among the larger population of IDUs is critical for effective drug resistance surveillance.
Collapse
|
4
|
Maruapula D, MacLeod IJ, Moyo S, Musonda R, Seatla K, Molebatsi K, Leteane M, Essex M, Gaseitsiwe S, Rowley CF. Use of a mutation-specific genotyping method to assess for HIV-1 drug resistance in antiretroviral-naïve HIV-1 Subtype C-infected patients in Botswana. AAS Open Res 2021; 3:50. [PMID: 34036243 PMCID: PMC8112461 DOI: 10.12688/aasopenres.13107.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/19/2021] [Indexed: 11/20/2022] Open
Abstract
Background: HIV-1 drug resistance poses a major threat to the success of antiretroviral therapy. The high costs of available HIV drug resistance assays prohibit their routine usage in resource-limited settings. Pan-degenerate amplification and adaptation (PANDAA), a focused genotyping approach based on quantitative PCR (qPCR), promises a fast and cost-effective way to detect HIV drug resistance mutations (HIVDRMs). Given the high cost of current genotyping methods, we sought to use PANDAA for screening key HIVDRMs in antiretroviral-naïve individuals at codons 103, 106 and 184 of the HIV-1 reverse transcriptase gene. Mutations selected at these positions have been shown to be the most common driver mutations in treatment failure. Methods: A total of 103 samples from antiretroviral-naïve individuals previously genotyped by Sanger population sequencing were used to assess and verify the performance of PANDAA. PANDAA samples were run on the ABI 7500 Sequence Detection System to genotype the K103N, V106M and M184V HIVDRMs. In addition, the cost per sample and reaction times were compared. Results: Sanger population sequencing and PANDAA detected K103N mutation in three (2.9%) out of 103 participants. There was no evidence of baseline V106M and M184V mutations observed in our study. To genotype the six HIVDRMs it costs approximately 40 USD using PANDAA, while the reagents cost per test for Sanger population sequencing is approximately 100 USD per sample. PANDAA was performed quicker compared to Sanger sequencing, 2 hours for PANDAA versus 15 hours for Sanger sequencing. Conclusion: The performance of PANDAA and Sanger population sequencing demonstrated complete concordance. PANDAA could improve patient management by providing quick and relatively cheap access to drug-resistance information.
Collapse
Affiliation(s)
- Dorcas Maruapula
- Botswana Harvard AIDS Institute Partnership, Gaborone, Botswana
- University of Botswana, Gaborone, Botswana
| | - Iain J. MacLeod
- Harvard T.H Chan School of Public Health, Boston, MA, USA
- Aldatu Biosciences, Watertown, MA, USA
| | - Sikhulile Moyo
- Botswana Harvard AIDS Institute Partnership, Gaborone, Botswana
- Harvard T.H Chan School of Public Health, Boston, MA, USA
| | | | - Kaelo Seatla
- Botswana Harvard AIDS Institute Partnership, Gaborone, Botswana
- University of Botswana, Gaborone, Botswana
| | - Kesaobaka Molebatsi
- Botswana Harvard AIDS Institute Partnership, Gaborone, Botswana
- University of Botswana, Gaborone, Botswana
| | | | - Max Essex
- Botswana Harvard AIDS Institute Partnership, Gaborone, Botswana
- Harvard T.H Chan School of Public Health, Boston, MA, USA
| | - Simani Gaseitsiwe
- Botswana Harvard AIDS Institute Partnership, Gaborone, Botswana
- Harvard T.H Chan School of Public Health, Boston, MA, USA
| | - Christopher F. Rowley
- Harvard T.H Chan School of Public Health, Boston, MA, USA
- Beth Israel Deaconess Medical Center, Boston, MA, USA
| |
Collapse
|
5
|
Maruapula D, MacLeod IJ, Moyo S, Musonda R, Seatla K, Molebatsi K, Leteane M, Essex M, Gaseitsiwe S, Rowley CF. Use of a mutation-specific genotyping method to assess for HIV-1 drug resistance in antiretroviral-naïve HIV-1 Subtype C-infected patients in Botswana. AAS Open Res 2020; 3:50. [PMID: 34036243 PMCID: PMC8112461 DOI: 10.12688/aasopenres.13107.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/29/2020] [Indexed: 10/20/2023] Open
Abstract
Background: HIV-1 drug resistance poses a major threat to the success of antiretroviral therapy. The high costs of available HIV drug resistance assays prohibit their routine usage in resource-limited settings. Pan-degenerate amplification and adaptation (PANDAA), a focused genotyping approach based on quantitative PCR (qPCR), promises a fast and cost-effective way to detect HIV drug resistance mutations (HIVDRMs). Given the high cost of current genotyping methods, we sought to use PANDAA for screening key HIVDRMs in antiretroviral-naïve individuals at codons 103, 106 and 184 of the HIV-1 reverse transcriptase gene. Mutations selected at these positions have been shown to be the most common driver mutations in treatment failure. Methods: A total of 103 samples from antiretroviral-naïve individuals previously genotyped by Sanger population sequencing were used to assess and verify the performance of PANDAA. PANDAA samples were run on the ABI 7500 Sequence Detection System to genotype the K103N, V106M and M184V HIVDRMs. In addition, the cost per sample and reaction times were compared. Results: Sanger population sequencing and PANDAA detected K103N mutation in three (2.9%) out of 103 participants. There was no evidence of baseline V106M and M184V mutations observed in our study. To genotype the six HIVDRMs it costs approximately 40 USD using PANDAA, while the reagents cost per test for Sanger population sequencing is approximately 100 USD per sample. PANDAA was performed quicker compared to Sanger sequencing, 2 hours for PANDAA versus 15 hours for Sanger sequencing. Conclusion: The performance of PANDAA and Sanger population sequencing demonstrated complete concordance. PANDAA could improve patient management by providing quick and relatively cheap access to drug-resistance information.
Collapse
Affiliation(s)
- Dorcas Maruapula
- Botswana Harvard AIDS Institute Partnership, Gaborone, Botswana
- University of Botswana, Gaborone, Botswana
| | - Iain J. MacLeod
- Harvard T.H Chan School of Public Health, Boston, MA, USA
- Aldatu Biosciences, Watertown, MA, USA
| | - Sikhulile Moyo
- Botswana Harvard AIDS Institute Partnership, Gaborone, Botswana
- Harvard T.H Chan School of Public Health, Boston, MA, USA
| | | | - Kaelo Seatla
- Botswana Harvard AIDS Institute Partnership, Gaborone, Botswana
- University of Botswana, Gaborone, Botswana
| | - Kesaobaka Molebatsi
- Botswana Harvard AIDS Institute Partnership, Gaborone, Botswana
- University of Botswana, Gaborone, Botswana
| | | | - Max Essex
- Botswana Harvard AIDS Institute Partnership, Gaborone, Botswana
- Harvard T.H Chan School of Public Health, Boston, MA, USA
| | - Simani Gaseitsiwe
- Botswana Harvard AIDS Institute Partnership, Gaborone, Botswana
- Harvard T.H Chan School of Public Health, Boston, MA, USA
| | - Christopher F. Rowley
- Harvard T.H Chan School of Public Health, Boston, MA, USA
- Beth Israel Deaconess Medical Center, Boston, MA, USA
| |
Collapse
|
6
|
Zhang X, Chen J, Yu F, Wang C, Ren R, Wang Q, Tan S, Jiang S, Liu S, Li L. 3-Hydroxyphthalic Anhydride- Modified Rabbit Anti-PAP IgG as a Potential Bifunctional HIV-1 Entry Inhibitor. Front Microbiol 2018; 9:1330. [PMID: 29971062 PMCID: PMC6018217 DOI: 10.3389/fmicb.2018.01330] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 05/30/2018] [Indexed: 01/08/2023] Open
Abstract
Several studies have reported that amyloid fibrils in human semen formed from a naturally occurring peptide fragment of prostatic acidic phosphatase (PAP248-286), known as semen-derived enhancer of viral infection (SEVI), could dramatically enhance human immunodeficiency virus type 1 (HIV-1) infection. Accordingly, SEVI might serve as a novel target for new antiviral drugs or microbicide candidates for the prevention of sexually transmitted HIV. Theoretically, a special anti-PAP or anti-SEVI antibody could reduce the enhancement of viral infection by blocking the binding of HIV and SEVI fibrils. Here, 3-hydroxyphthalic anhydride modified anti-PAP248-286 antibody, named HP-API, exhibited broad-spectrum and highly effective anti-HIV-1 activities on different subtypes and tropism. By using time-of-addition, cell–cell fusion and a single-cycle HIV-1 infection assays, we demonstrated that HP-API is an HIV-1 entry/fusion inhibitor. Mechanism studies suggest that HP-API inhibited HIV-1 entry/fusion by targeting both HIV-1 gp120 envelop and CD4 receptor on the host cell specifically. It is noteworthy that HP-API abrogated the formation of SEVI fibrils and partially interfered with SEVI-mediated enhancement of HIV-1 infection. Based on these findings, HP-API could be considered a bifunctional HIV-1 entry/fusion inhibitor with high potential.
Collapse
Affiliation(s)
- Xuanxuan Zhang
- Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Jinquan Chen
- Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China.,Jiangsu Food and Pharmaceutical Science College, Huai'an, China
| | - Fei Yu
- Key Laboratory of Medical Molecular Virology of Ministries of Education and Health, School of Basic Medical Sciences and Shanghai Public Health Clinical Center, Fudan University, Shanghai, China.,College of Life Sciences, Agricultural University of Hebei, Baoding, China
| | - Chunyan Wang
- Center for Clinical Laboratory, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ruxia Ren
- Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Qian Wang
- Key Laboratory of Medical Molecular Virology of Ministries of Education and Health, School of Basic Medical Sciences and Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Suiyi Tan
- Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Shibo Jiang
- Key Laboratory of Medical Molecular Virology of Ministries of Education and Health, School of Basic Medical Sciences and Shanghai Public Health Clinical Center, Fudan University, Shanghai, China.,Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY, United States
| | - Shuwen Liu
- Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Lin Li
- Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| |
Collapse
|
7
|
Yin S, Zhang X, Lai F, Liang T, Wen J, Lin W, Qiu J, Liu S, Li L. Trilobatin as an HIV-1 entry inhibitor targeting the HIV-1 Gp41 envelope. FEBS Lett 2018; 592:2361-2377. [PMID: 29802645 DOI: 10.1002/1873-3468.13113] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 05/04/2018] [Accepted: 05/17/2018] [Indexed: 12/16/2022]
Abstract
HIV-1 transmembrane protein gp41 plays a crucial role by forming a stable six-helix bundle during HIV entry. Due to highly conserved sequence of gp41, the development of an effective and safe small-molecule compound targeting gp41 is a good choice. Currently, natural polyanionic ingredients with anti-HIV activities have aroused concern. Here, we first discovered that a glycosylated dihydrochalcone, trilobatin, exhibited broad anti-HIV-1 activity and low cytotoxicity in vitro. Site-directed mutagenesis analysis suggested that the hydrophobic residue (I564) located in gp41 pocket-forming site is pivotal for anti-HIV activity of trilobatin. Furthermore, trilobatin displayed synergistic anti-HIV activities combined with other antiretroviral agents. Trilobatin has a good potential to be developed as a small-molecule HIV-1 entry inhibitor for clinical combination therapy.
Collapse
Affiliation(s)
- Shuwen Yin
- Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Xuanxuan Zhang
- Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Fangyuan Lai
- Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Taizhen Liang
- Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Jiayong Wen
- Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Wanying Lin
- Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Jiayin Qiu
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Shuwen Liu
- Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Lin Li
- Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| |
Collapse
|