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Yamazaki S, Hishinuma E, Suzuki Y, Ueda A, Kijogi C, Nakayoshi T, Oda A, Saito S, Tadaka S, Kinoshita K, Maekawa M, Sato Y, Kumondai M, Mano N, Hirasawa N, Hiratsuka M. Functional significance of CYP2B6 gene rare allelic variants identified in Japanese individuals. Biochem Pharmacol 2024; 229:116515. [PMID: 39218044 DOI: 10.1016/j.bcp.2024.116515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 08/12/2024] [Accepted: 08/29/2024] [Indexed: 09/04/2024]
Abstract
Cytochrome P450 2B6 (CYP2B6) catalyzes the metabolism of many drugs, including efavirenz and propofol. Genetic polymorphisms in CYP2B6 alter its enzymatic activity and substantially affect its pharmacokinetics. High-frequency variants, such as CYP2B6*6, are associated with the risk of developing side effects due to reduced CYP2B6 activity. However, the impact of rare alterations on enzyme function remains unknown, and some of these variants may significantly decrease the CYP2B6 activity. Therefore, in this study, we evaluated in vitro the functional alterations in 29 missense variants of the CYP2B6 gene identified in 8,380 Japanese individuals. Wild-type CYP2B6 and 29 rare CYP2B6 variants were transiently expressed in mammalian cells. The expression levels of variant CYP2B6 proteins in the microsomal fractions extracted from 293FT cells were assessed using western blotting and reduced-carbon monoxide difference spectroscopy, and a specific peak at 450 nm was detected in the wild-type and 19 variants. Furthermore, kinetic parameters were determined by assaying the reactions with efavirenz and propofol and quantifying the metabolite concentrations. We found that 12 variants had significantly lower or abolished enzymatic activity with both the substrates. In silico three-dimensional docking and molecular-dynamics simulations suggested that these functional changes were due to conformational changes in essential regions, such as the heme-binding site and ligand channels involved in transporting substrates to the active site. These findings have implications for predicting the plasma concentrations of CYP2B6 substrates and controlling their side effects.
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Affiliation(s)
- Shuki Yamazaki
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Eiji Hishinuma
- Advanced Research Center for Innovations in Next-Generation Medicine, Tohoku University, Sendai 980-8573, Japan; Tohoku Medical Megabank Organization, Tohoku University, Sendai 980-8573, Japan
| | - Yuma Suzuki
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Akiko Ueda
- Advanced Research Center for Innovations in Next-Generation Medicine, Tohoku University, Sendai 980-8573, Japan
| | - Caroline Kijogi
- Research Center for Pharmaceutical Development, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Tomoki Nakayoshi
- Graduate School of Information Sciences, Hiroshima City University, Hiroshima 731-3194, Japan; Department of Pharmacy, Faculty of Pharmacy, Meijo University, Nagoya 468-8503, Japan
| | - Akifumi Oda
- Department of Pharmacy, Faculty of Pharmacy, Meijo University, Nagoya 468-8503, Japan
| | - Sakae Saito
- Advanced Research Center for Innovations in Next-Generation Medicine, Tohoku University, Sendai 980-8573, Japan; Tohoku Medical Megabank Organization, Tohoku University, Sendai 980-8573, Japan
| | - Shu Tadaka
- Advanced Research Center for Innovations in Next-Generation Medicine, Tohoku University, Sendai 980-8573, Japan; Tohoku Medical Megabank Organization, Tohoku University, Sendai 980-8573, Japan
| | - Kengo Kinoshita
- Advanced Research Center for Innovations in Next-Generation Medicine, Tohoku University, Sendai 980-8573, Japan; Tohoku Medical Megabank Organization, Tohoku University, Sendai 980-8573, Japan; Graduate School of Information Sciences, Tohoku University, Sendai 980-8575, Japan
| | - Masamitsu Maekawa
- Advanced Research Center for Innovations in Next-Generation Medicine, Tohoku University, Sendai 980-8573, Japan; Department of Pharmaceutical Sciences, Tohoku University Hospital, Sendai 980-8574, Japan
| | - Yu Sato
- Department of Pharmaceutical Sciences, Tohoku University Hospital, Sendai 980-8574, Japan
| | - Masaki Kumondai
- Department of Pharmaceutical Sciences, Tohoku University Hospital, Sendai 980-8574, Japan
| | - Nariyasu Mano
- Department of Pharmaceutical Sciences, Tohoku University Hospital, Sendai 980-8574, Japan
| | - Noriyasu Hirasawa
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan; Advanced Research Center for Innovations in Next-Generation Medicine, Tohoku University, Sendai 980-8573, Japan; Department of Pharmaceutical Sciences, Tohoku University Hospital, Sendai 980-8574, Japan
| | - Masahiro Hiratsuka
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan; Advanced Research Center for Innovations in Next-Generation Medicine, Tohoku University, Sendai 980-8573, Japan; Tohoku Medical Megabank Organization, Tohoku University, Sendai 980-8573, Japan; Department of Pharmaceutical Sciences, Tohoku University Hospital, Sendai 980-8574, Japan.
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Xu X, Chen R, Lu L, Cheng J, He X, Pan H, Zhang M, Yi H, Tang S. Roles of NR1I3 and NR1H4 polymorphisms in the susceptibility to antituberculosis drug-induced liver injury in China: a case‒control study. Front Genet 2024; 15:1428319. [PMID: 39512799 PMCID: PMC11541836 DOI: 10.3389/fgene.2024.1428319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Accepted: 10/08/2024] [Indexed: 11/15/2024] Open
Abstract
Objective The pathogenesis of antituberculosis drug-induced liver injury (AT-DILI) remains largely unknown. The current investigation aimed to determine the genetic contribution of the nuclear receptor subfamily 1 Group I member 3 (NR1I3) and nuclear receptor subfamily 1 Group H member 4 (NR1H4) genes to the risk of AT-DILI in the Chinese population. Methods A 1:4 matched case‒control study was conducted, and five single nucleotide polymorphisms (SNPs) in the NR1I3 and NR1H4 genes were detected and assessed. Utilizing a multivariate conditional logistic regression model, the effects of haplotype and genotype on the risk of AT-DILI were examined. Extended subgroup analysis was carried out based on sex. The distribution of the peak value of serum liver enzymes also compared among different genotypes. Results 224 AT-DILI cases and 896 controls were included in this study. No significant difference was observed in genotypes or haplotypes frequencies between AT-DILI cases and controls. However, comparisons of liver function indicators revealed significant differences in the peak values of alanine aminotransferase (ALT), aspartate aminotransferase (AST) and total bilirubin (TBil) among patients with different genotypes of NR1H4 rs56163822 (GG vs. GT vs. TT, 27.1 U/L vs. 26.0 U/L vs. 23.0 U/L, p = 0.020; 34.0 U/L vs. 31.0 U/L vs. 30.6 U/L, p = 0.008; 15.5 μmol/L vs. 15.0 μmol/L vs. 13.7 μmol/L, p = 0.029, respectively), as well as in the peak values of ALT and AST among male patients with different genotypes of NR1H4 rs56163822 (29.0 U/L vs. 26.9 U/L vs. 22.6 U/L, p = 0.002; 34.0 U/L vs. 32.0 U/L vs. 30.5 U/L, p = 0.019, respectively). Conclusion Based on this 1:4 individual-matched case‒control study, the SNP rs56163822 in the NR1H4 gene may be linked to the susceptibility to AT-DILI in Chinese patients receiving anti-TB treatment. Further studies in larger varied populations are needed to validate our findings.
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Affiliation(s)
- Xiaoyan Xu
- Department of Infectious Disease Control and Prevention, Changshu Center for Disease Control and Prevention, Suzhou, China
| | - Ruina Chen
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Lihuan Lu
- Department of Tuberculosis, The Second People’s Hospital of Changshu, Changshu, China
| | - Jingru Cheng
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Xiaomin He
- Department of Infectious Disease, The People’s Hospital of Taixing, Taixing, China
| | - Hongqiu Pan
- Department of Tuberculosis, The Third People’s Hospital of Zhenjiang Affiliated to Jiangsu University, Zhenjiang, China
| | - Meiling Zhang
- Department of Infectious Disease, The Jurong Hospital Affiliated to Jiangsu University, Jurong, China
| | - Honggang Yi
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Shaowen Tang
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
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Zhang J, Ma S, Zhou W, Feng J, Kang Y, Yang W, Zhang H, Deng F. Genetic polymorphisms of CYP2B6 is a risk of metabolic associated fatty liver disease in Chinese population. Toxicol Appl Pharmacol 2023; 481:116770. [PMID: 37995809 DOI: 10.1016/j.taap.2023.116770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 10/19/2023] [Accepted: 11/18/2023] [Indexed: 11/25/2023]
Abstract
BACKGROUND The expression and activity of cytochrome P450 2B6 (CYP2B6) may be related to the metabolic associated fat liver disease (MAFLD). Since constitutive androstane receptor (CAR) is a classic transcriptional regulator of CYP2B6, and the single nucleotide polymorphisms (SNPs) of CYP2B6 and CAR are both associated with adverse reactions of efavirenz, we hypothesized that genetic polymorphisms of CAR might also result in additional interindividual variability in CYP2B6. This study was devoted to explore the association between CYP2B6 and CAR SNPs and susceptibility to MAFLD. MATERIALS AND METHODS A total of 590 objects of study (118 with MAFLD and 472 healthy control) between December 2014 and April 2018 were retrospectively enrolled. Twenty-two selected SNPs in CYP2B6 and CAR were genotyped with a custom-designed 48-plex SNP Scan TM® Kit. The frequencies of the alleles, genotypes and genetic models of the variants were compared between the two groups. The odds ratios (ORs) and the corresponding 95% confidence intervals (CIs) were calculated. RESULTS The T allele of rs3745274 in CYP2B6 was associated with a decreased risk for MAFLD (OR 0.610; 95% CI: 0.451-0.825, p = 0.001) which was still statistically significant after adjusting with Bonferroni method(p = 0.014) The allele, genotype and genetic model frequencies were similar in the two groups for the other twenty-one SNPs (all P > 0.05). There were no multiplicative or additive interactions between the SNPs. CONCLUSION Our study revealed that rs3745274 variants in CYP2B6 is associated with susceptibility to MAFLD in the Han Chinese population.
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Affiliation(s)
- Jingwei Zhang
- Department of Laboratory Medicine and Department of Blood Transfusion, Chengdu Second People's Hospital, Chengdu, China
| | - Shijie Ma
- Department of Nephrology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Wei Zhou
- Department of Nephrology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Jing Feng
- Department of Traditional Chinese Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Yuwei Kang
- Department of Nephrology, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Wei Yang
- Department of Nephrology, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Heping Zhang
- Department of Nephrology, Affiliated Hospital of North Sichuan Medical College, Nanchong, China.
| | - Fei Deng
- Department of Nephrology, Sichuan Provincial People's Hospital Jinniu Hospital, Chengdu Jinniu District People's Hospital, Chengdu, China; Department of Nephrology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.
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Wiesner A, Skrońska M, Gawlik G, Marcinkowska M, Zagrodzki P, Paśko P. Interactions of Antiretroviral Drugs with Food, Beverages, Dietary Supplements, and Alcohol: A Systematic Review and Meta-analyses. AIDS Behav 2022; 27:1441-1468. [PMID: 36318429 PMCID: PMC10129904 DOI: 10.1007/s10461-022-03880-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/24/2022] [Indexed: 04/28/2023]
Abstract
Multiple factors may affect combined antiretroviral therapy (cART). We investigated the impact of food, beverages, dietary supplements, and alcohol on the pharmacokinetic and pharmacodynamic parameters of 33 antiretroviral drugs. Systematic review in adherence to PRISMA guidelines was performed, with 109 reports of 120 studies included. For each drug, meta-analyses or qualitative analyses were conducted. We have found clinically significant interactions with food for more than half of antiretroviral agents. The following drugs should be taken with or immediately after the meal: tenofovir disoproxil, etravirine, rilpivirine, dolutegravir, elvitegravir, atazanavir, darunavir, lopinavir, nelfinavir, ritonavir, saquinavir. Didanosine, zalcitabine, zidovudine, efavirenz, amprenavir, fosamprenavir, and indinavir should be taken on an empty stomach for maximum patient benefit. Antiretroviral agents not mentioned above can be administered regardless of food. There is insufficient evidence available to make recommendations about consuming juice or alcohol with antiretroviral drugs. Resolving drug-food interactions may contribute to maximized cART effectiveness and safety.
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Affiliation(s)
- Agnieszka Wiesner
- Department of Food Chemistry and Nutrition, Faculty of Pharmacy, Jagiellonian University Medical College, 9 Medyczna Str., 30-688, Kraków, Poland
| | - Magdalena Skrońska
- Department of Food Chemistry and Nutrition, Faculty of Pharmacy, Jagiellonian University Medical College, 9 Medyczna Str., 30-688, Kraków, Poland
| | - Gabriela Gawlik
- Department of Community and Public Health, Idaho State University, 1311 E Central Dr, Meridian, ID, 83642, USA
| | - Monika Marcinkowska
- Department of Medicinal Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, 9 Medyczna Str., 30-688, Kraków, Poland
| | - Paweł Zagrodzki
- Department of Food Chemistry and Nutrition, Faculty of Pharmacy, Jagiellonian University Medical College, 9 Medyczna Str., 30-688, Kraków, Poland
| | - Paweł Paśko
- Department of Food Chemistry and Nutrition, Faculty of Pharmacy, Jagiellonian University Medical College, 9 Medyczna Str., 30-688, Kraków, Poland.
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Quantitative Prediction of Drug Interactions Caused by Cytochrome P450 2B6 Inhibition or Induction. Clin Pharmacokinet 2022; 61:1297-1306. [PMID: 35857278 DOI: 10.1007/s40262-022-01153-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/29/2022] [Indexed: 11/03/2022]
Abstract
BACKGROUND Numerous drugs have the potential to be affected by cytochrome P450 (CYP) 2B6-mediated drug-drug interactions (DDIs). OBJECTIVES In this work, we extend a static approach to the prediction of the extent of pharmacokinetics DDIs between substrates and inhibitors or inducers of CYP2B6. METHODS This approach is based on the calculation of two parameters (the contribution ratio [CR], representing the fraction of dose of the substrate metabolized via this pathway and the inhibitory or inducing potency of the perpetrator [IR or IC, respectively]) calculated from the area under the concentration-time curve (AUC) ratios obtained in in-vivo DDI studies. RESULTS Forty-eight studies involving 5 substrates, 11 inhibitors and 18 inducers of CYP2B6 (overall 15 inhibition and 33 induction studies) were divided into test and validation sets and considered for estimation of the parameters. The proposed approach demonstrated a fair accuracy for predicting the extent of DDI related to CYP2B6 inhibition and induction, all predictions related to the validation test (N = 18) being 50-200% of the observed ratios. CONCLUSIONS This methodology can be used for proposing initial dose adaptations to be adopted, for example in clinical use or for designing DDI studies involving this enzyme.
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Liu X, Shang J, Fu Q, Lu L, Deng J, Tang Y, Li J, Mei D, Zhang B, Zhang S. The Effects of Cumulative Dose and Polymorphisms in CYP2B6 on the Mitotane Plasma Trough Concentrations in Chinese Patients With Advanced Adrenocortical Carcinoma. Front Oncol 2022; 12:919027. [PMID: 35847963 PMCID: PMC9281498 DOI: 10.3389/fonc.2022.919027] [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: 04/13/2022] [Accepted: 05/30/2022] [Indexed: 11/23/2022] Open
Abstract
Mitotane is the only drug approved to treat adrenocortical carcinoma (ACC), and a relationship of pharmacokinetic/pharmacodynamic has been characterized. However, limited evidence concerning affecting factors in large interindividual variability of the pharmacokinetics of mitotane is available. To address this question, a retrospective analysis was performed on ACC Chinese patients treated with mitotane for more than 3 months. Mitotane plasma trough concentrations were detected at the steady state, and CYP2B6, CYP3A4, and pregnane X receptor (PXR) polymorphisms were genotyped. After examining homogeneous pharmacologic data, we restricted the analyses to 36 patients that received mitotane for a median (interquartile range, IQR) of 9 months (5.00–22.50) with a median dose of 2 g/day (2.00–2.50). As a result, drug exposure was significantly influenced by the cumulative dose of mitotane, and CYP2B6 516GG and CYP2B6 26570CC were at high risk to be below the therapeutic range of mitotane. No association was found between mitotane concentrations with CYP3A4 or PXR polymorphism. Our data firstly indicated that the cumulative dose of mitotane and polymorphisms of CYP2B6 516 and CYP2B6 26570 might significantly affect mitotane plasma trough concentrations in Chinese ACC patients.
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Affiliation(s)
- Xin Liu
- Department of Pharmacy, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Beijing, China
| | - Junmei Shang
- Department of Pharmacy, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Beijing, China
- Chinese Academy of Medical Sciences and Peking Union Medical College, Institute of Materia Medica, Beijing, China
| | - Qiang Fu
- Department of Pharmacy, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Beijing, China
| | - Lin Lu
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Beijing, China
- Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jianhua Deng
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Beijing, China
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yan Tang
- Department of Pharmacy, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Beijing, China
| | - Jiantao Li
- Department of Pharmacy, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Beijing, China
| | - Dan Mei
- Department of Pharmacy, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Beijing, China
| | - Bo Zhang
- Department of Pharmacy, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Beijing, China
- *Correspondence: Bo Zhang, ; Shuyang Zhang,
| | - Shuyang Zhang
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Beijing, China
- Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- *Correspondence: Bo Zhang, ; Shuyang Zhang,
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Ximenez JP, Elias ABR, Nardotto GHB, Barroso PF, Bollela VR, Lanchote VL, Suarez-Kurtz G. Pharmacogenetic predictors of variability in efavirenz pharmacokinetics in an admixed Brazilian HIV cohort. Br J Clin Pharmacol 2022; 88:4585-4594. [PMID: 35514050 DOI: 10.1111/bcp.15387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 04/25/2022] [Accepted: 04/27/2022] [Indexed: 11/24/2022] Open
Abstract
AIMS To investigate the influence of pharmacogenetic polymorphisms on efavirenz (EFV) exposure and metabolism in HIV-infected Brazilians under treatment with EFV-containing antiretroviral (ART) regimens. METHODS HIV-positive adults (n=82) on stable ART regimens containing 600 mg EFV once daily for at least 6 months were recruited at two university hospitals. Blood samples collected at mid-dose interval were used to quantify the plasma concentrations of EFV (denoted [EFV]), its major metabolite 8-OH-EFV ([8-OH-EFV]) and [8-OH-EFV]/[EFV] metabolic ratio, and to genotype single nucleotide polymorphisms (SNPs) in CYP2B6 (rs3745274, c.516G>T; rs28399499, c.983T>C) and ABCB1 (rs3842, c.4036G>A). CYP2B6 metabolic phenotypes were inferred from the CYP2B6 diplotypes. Linear regression modeling was applied to identify sociodemographic, clinical and pharmacogenetic predictors of [EFV] and [8-OH-EFV]/[EFV] metabolic ratio. RESULTS Wide (50-fold) interindividual variation in [EFV], [8-OH-EFV] and [8-OH-EFV]/[EFV] was observed; 69.5% of participants had [EFV] within the nominal therapeutic range (1000-4000 ng/ml), while 19.5%, and 11.0% had [EFV] below and above this range, respectively. Multiple regression modeling retained only CYP2B6 metabolic phenotypes or the combined rs3745274 and rs28399499 genotypes, as significant predictors of [EFV] and [8-OH-EFV]/[EFV]. CONCLUSION EFV exposure and disposition varied widely among HIV-infected Brazilians under stable treatment with EFV-containing ART regimens. About one-tenth of the participants had [EFV] exceeding nominal supratherapeutic concentration (4000 ng/mL), but reported tolerance to the ARV regimens, while one fifth of participants had nominal subtherapeutic [EFV] (<1000 ng/ml) but adequate virological response. Genotype for the two CYP2B6 SNPs studied explained 48% of variation in [EFV] and 35% of variation in [8-OH-EFV]/[EFV].
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Affiliation(s)
- João Paulo Ximenez
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | | | | | - Paulo Feijó Barroso
- Hospital Universitário Clementino Fraga Filho, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Valdes Roberto Bollela
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Vera Lucia Lanchote
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
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Polymorphisms at CYP enzymes, NR1I2 and NR1I3 in association with virologic response to antiretroviral therapy in Brazilian HIV-positive individuals. THE PHARMACOGENOMICS JOURNAL 2022; 22:33-38. [PMID: 34504302 DOI: 10.1038/s41397-021-00254-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 08/17/2021] [Accepted: 08/26/2021] [Indexed: 02/07/2023]
Abstract
Virologic failure of antiretroviral therapy (ART) may be explained by single nucleotide polymorphisms (SNPs) in drug absorption and metabolism genes. Here, we characterized the associations between polymorphisms in cytochrome P450 enzymes' genes CYP2B6 and CYP3A4/A5, nuclear receptor genes NR1I2/3, and initial ART efficacy among 203 HIV-positive individuals from Rio de Janeiro. Association between SNPs and virologic control was evaluated after 6 and 12 months of follow-up using Cox regression models. The SNP rs2307424 (NR1I3) was associated with increased virologic response after 12 months of treatment, while rs1523127 (NR1I2), rs3003596, and rs2502815 (NR1I3) were associated with decreased response. Increased virologic response after 12 months (adjHR = 1.54; p = 0.02) was also observed among carriers of the NR1I3 haplotype rs2502815G-rs3003596A-rs2307424A versus the reference haplotype G-A-G. Our results suggest that NR1I2 and NR1I3 variants are associated with virologic responses to ART among Brazilians.
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Desta Z, El-Boraie A, Gong L, Somogyi AA, Lauschke VM, Dandara C, Klein K, Miller NA, Klein TE, Tyndale RF, Whirl-Carrillo M, Gaedigk A. PharmVar GeneFocus: CYP2B6. Clin Pharmacol Ther 2021; 110:82-97. [PMID: 33448339 DOI: 10.1002/cpt.2166] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 12/21/2020] [Indexed: 12/12/2022]
Abstract
The Pharmacogene Variation Consortium (PharmVar) catalogs star (*) allele nomenclature for the polymorphic human CYP2B6 gene. Genetic variation within the CYP2B6 gene locus impacts the metabolism or bioactivation of clinically important drugs. Of particular importance are efficacy and safety concerns regarding: efavirenz, which is used for the treatment of HIV type-1 infection; methadone, a mainstay in the treatment of opioid use disorder and as an analgesic; ketamine, used as an antidepressant and analgesic; and bupropion, which is prescribed to treat depression and for smoking cessation. This GeneFocus provides a comprehensive overview and summary of CYP2B6 and describes how haplotype information catalogued by PharmVar is utilized by the Pharmacogenomics Knowledgebase (PharmGKB) and the Clinical Pharmacogenetics Implementation Consortium (CPIC).
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Affiliation(s)
- Zeruesenay Desta
- Division of Clinical Pharmacology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Ahmed El-Boraie
- Centre for Addiction and Mental Health and Departments of Pharmacology & Toxicology, and Psychiatry, University of Toronto, Toronto, Canada
| | - Li Gong
- Department of Biomedical Data Science, Stanford University, Stanford, California, USA
| | - Andrew A Somogyi
- Discipline of Pharmacology, Adelaide Medical School, University of Adelaide, Adelaide, Australia
| | - Volker M Lauschke
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Collet Dandara
- Division of Human Genetics, Department of Pathology & Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Kathrin Klein
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Stuttgart, Germany.,University of Tuebingen, Tuebingen, Germany
| | - Neil A Miller
- Genomic Medicine Center, Children's Mercy, Kansas City, Missouri, USA.,School of Medicine, University of Missouri-Kansas City, Kansas City, Missouri, USA
| | - Teri E Klein
- Department of Biomedical Data Science, Stanford University, Stanford, California, USA
| | - Rachel F Tyndale
- Centre for Addiction and Mental Health and Departments of Pharmacology & Toxicology, and Psychiatry, University of Toronto, Toronto, Canada
| | | | - Andrea Gaedigk
- Division of Clinical Pharmacology, Toxicology & Therapeutic Innovation, Children's Mercy, Kansas City, Missouri, USA.,School of Medicine, University of Missouri-Kansas City, Kansas City, Missouri, USA
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Influence of selected polymorphisms in disposition genes on lumefantrine pharmacokinetics when coadministered with efavirenz. Pharmacogenet Genomics 2021; 30:96-106. [PMID: 32209837 DOI: 10.1097/fpc.0000000000000401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Coadministration of artemether-lumefantrine and efavirenz has been shown to result in significant interactions. The influence of functional genetic polymorphisms in selected CYPs on the magnitude of this interaction was investigated in pregnant and nonpregnant adults. METHOD A standard 3-day regimen of artemether-lumefantrine was administered to each patient on steady-state efavirenz-based antiretroviral therapy (ART). Pharmacokinetic parameters were obtained from intensive plasma concentration-time data. Genotyping data were tested for compliance with Hardy-Weinberg equilibrium by Chi-square test. Linear regressions, Mann-Whitney U-test or Kruskal-Wallis tests were conducted to examine the association of lumefantrine plasma level with CYP2B6 c.516G>T, NR1I3 152c-1089T>C, CYP2B6 c.983T>C, CYP3A5*3 and CYP3A4*22. RESULTS Among a total of 69 malaria-HIV coinfected patients (34 nonpregnant and 35 pregnant), median (interquartile range) age was 33 (27-36.5) years and body weight was 59.5 (50-67.5) kg. In nonpregnant group, CYP2B6 c.516G>T was significantly associated with lower log Cday 7 of lumefantrine using multivariate linear regressions (β = -0.239; P = 0.013). In 59% of women with CYP2B6 c.516T, Cday 7 of lumefantrine was below the target of 280 ng/mL compared to 47% in the noncarriers. CYP2B6 c.983T>C significantly associated with higher log Cday 7 of desbutyl lumefantrine in both pregnant (β = 0.383; P = 0.033) and nonpregnant (β = 0.395; P = 0.023) groups. Composite genotypes for both CYP2B6 Single-nucleotide polymorphisms strongly associated with lumefantrine plasma concentration. An associative trend between lumefantrine pharmacokinetics and NR1I3 152c-1089T>C genotypes indicated that 70% of the Cday 7 of lumefantrine in those with NR1I3 152c-1089TT genotype was below 280 ng/mL compared to 53% in those with NR1I3 152c-1089CC or CT genotype. CONCLUSION The findings revealed that the efavirenz-lumefantrine interaction was accentuated in the group with CYP2B6 c.516T, c.983C and NR1I3 152c-1089T alleles. This warrants further investigations of other drug-drug interactions for optimising dosing in genetically defined subgroups, particularly during drug development.
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Physiologically Based Pharmacokinetic/Pharmacodynamic Modeling to Predict the Impact of CYP2C9 Genetic Polymorphisms, Co-Medication and Formulation on the Pharmacokinetics and Pharmacodynamics of Flurbiprofen. Pharmaceutics 2020; 12:pharmaceutics12111049. [PMID: 33147873 PMCID: PMC7693160 DOI: 10.3390/pharmaceutics12111049] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 10/23/2020] [Accepted: 10/26/2020] [Indexed: 02/01/2023] Open
Abstract
Physiologically based pharmacokinetic/pharmacodynamic (PBPK/PD) models can serve as a powerful framework for predicting the influence as well as the interaction of formulation, genetic polymorphism and co-medication on the pharmacokinetics and pharmacodynamics of drug substances. In this study, flurbiprofen, a potent non-steroid anti-inflammatory drug, was chosen as a model drug. Flurbiprofen has absolute bioavailability of ~95% and linear pharmacokinetics in the dose range of 50–300 mg. Its absorption is considered variable and complex, often associated with double peak phenomena, and its pharmacokinetics are characterized by high inter-subject variability, mainly due to its metabolism by the polymorphic CYP2C9 (fmCYP2C9 ≥ 0.71). In this study, by leveraging in vitro, in silico and in vivo data, an integrated PBPK/PD model with mechanistic absorption was developed and evaluated against clinical data from PK, PD, drug-drug and gene-drug interaction studies. The PBPK model successfully predicted (within 2-fold) 36 out of 38 observed concentration-time profiles of flurbiprofen as well as the CYP2C9 genetic effects after administration of different intravenous and oral dosage forms over a dose range of 40–300 mg in both Caucasian and Chinese healthy volunteers. All model predictions for Cmax, AUCinf and CL/F were within two-fold of their respective mean or geometric mean values, while 90% of the predictions of Cmax, 81% of the predictions of AUCinf and 74% of the predictions of Cl/F were within 1.25 fold. In addition, the drug-drug and drug-gene interactions were predicted within 1.5-fold of the observed interaction ratios (AUC, Cmax ratios). The validated PBPK model was further expanded by linking it to an inhibitory Emax model describing the analgesic efficacy of flurbiprofen and applying it to explore the effect of formulation and genetic polymorphisms on the onset and duration of pain relief. This comprehensive PBPK/PD analysis, along with a detailed translational biopharmaceutic framework including appropriately designed biorelevant in vitro experiments and in vitro-in vivo extrapolation, provided mechanistic insight on the impact of formulation and genetic variations, two major determinants of the population variability, on the PK/PD of flurbiprofen. Clinically relevant specifications and potential dose adjustments were also proposed. Overall, the present work highlights the value of a translational PBPK/PD approach, tailored to target populations and genotypes, as an approach towards achieving personalized medicine.
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Yoon HY, Cho YA, Yee J, Gwak HS. Effects of CYP2B6 polymorphisms on plasma nevirapine concentrations: a systematic review and meta-analysis. Sci Rep 2020; 10:17390. [PMID: 33060725 PMCID: PMC7562737 DOI: 10.1038/s41598-020-74506-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Accepted: 09/21/2020] [Indexed: 12/25/2022] Open
Abstract
Cytochrome P450 (CYP) is involved in the metabolism of nevirapine (NVP); especially, CYP2B6 has been known to be one of the main enzymes involved in NVP metabolism. The objective of this study was to investigate the effects of CYP2B6 variants on plasma concentrations of NVP by a systematic review and meta-analysis. A search for qualifying studies published until April 2020 was conducted using the EMBASE, PubMed, and Web of Science databases. The mean difference (MD) and 95% confidence intervals (CIs) were calculated. Data analysis was performed using R Studio (version 3.6) and Review Manager (version 5.3). In total, data from six studies involving 634 patients were analyzed in the systematic review and five studies in the meta-analysis. We found that carriers of the CYP2B6 516TT genotype had a 2.18 µg/mL higher NVP concentration than did the GG or GT (95% CI 1.28-3.08). In the respective comparisons of the three genotypes, it was found that the MD was 1.87 µg/mL between the TT and GT groups, 2.53 µg/mL between TT and GG, and 0.60 µg/mL between GT and GG. This meta-analysis confirmed that CYP2B6 polymorphisms was associated with plasma NVP concentrations. Therefore, CYP2B6 genotyping may be useful to predict the responses to NVP.
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Affiliation(s)
- Ha Young Yoon
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea
| | - Young Ah Cho
- College of Pharmacy, Gyeongsang National University, Jinju, Gyeongnam, 52828, Republic of Korea.,Mokhwa Convalescent Hospital, Jinju, Gyeongnam, 52828, Republic of Korea
| | - Jeong Yee
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea.
| | - Hye Sun Gwak
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea.
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Chen R, Chen J, Xun J, Hu Z, Huang Q, Zhang R, Steinhart C, Shen Y, Liu L, Lu H. Pharmacogenomics and pharmacokinetics of efavirenz 400 or 600 mg in 184 treatment-naive HIV-infected patients in China. Pharmacogenomics 2020; 21:945-956. [PMID: 32838647 DOI: 10.2217/pgs-2019-0169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Background: The pharmacogenomics and pharmacokinetics/pharmacodynamics of 400 mg efavirenz have rarely been reported. Materials & methods: A total of 184 treatment-naive HIV-infected patients were randomly assigned (1:1) to receive a lower dose (tenofovir disoproxil 200 mg, efavirenz 400 mg and lamivudine) or a standard dose regimen. Relationships between pharmacogenomics and efavirenz pharmacokinetics/pharmacodynamics were explored at 48 weeks. Results: There was no relationship between pharmacogenomics and adverse reactions of the central nervous system and antiretoviral efficacy. CYP2B6 516G>T, 785A>G, 18492C>T and ABCB1 3435C>T T/C were associated with higher efavirenz plasma levels in the standard but not the lower dose group. No relationship was found between pharmacogenomics and antiretoviral efficacy. Patients who were <60 kg had higher efavirenz concentration compared with those with weight ≥60 kg when using 600 mg efavirenz, this was not observed with 400 mg efavirenz. Conclusion: The effect of pharmacogenomics and body weight on the efavirenz concentration was significant in the 600 mg group but not in the 400 mg group.
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Affiliation(s)
- Rong Chen
- Department of Infection & Immunology, Shanghai Public Health Clinical Center, Fudan University. Shanghai, 201508, China.,Department of Pharmacy, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Jun Chen
- Department of Infection & Immunology, Shanghai Public Health Clinical Center, Fudan University. Shanghai, 201508, China
| | - Jingna Xun
- Department of Infection & Immunology, Shanghai Public Health Clinical Center, Fudan University. Shanghai, 201508, China
| | - Zhiliang Hu
- Department of Infectious Disease, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Nanjing, 210003, China
| | - Qiong Huang
- Yunnan AIDS Care Center (YNACC), Yunnan Provincial Infectious Disease Hospital, Kunming, 650500, China
| | - Renfang Zhang
- Department of Infection & Immunology, Shanghai Public Health Clinical Center, Fudan University. Shanghai, 201508, China
| | - Corky Steinhart
- CAN Community Health, FL 34232, USA.,Department of Internal Medicine, The University of Central Florida, College of Medicine, FL 32827, USA
| | - Yinzhong Shen
- Department of Infection & Immunology, Shanghai Public Health Clinical Center, Fudan University. Shanghai, 201508, China
| | - Li Liu
- Department of Infection & Immunology, Shanghai Public Health Clinical Center, Fudan University. Shanghai, 201508, China
| | - Hongzhou Lu
- Department of Infection & Immunology, Shanghai Public Health Clinical Center, Fudan University. Shanghai, 201508, China
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De Benedetto I, Trunfio M, Guastamacchia G, Bonora S, Calcagno A. A review of the potential mechanisms of neuronal toxicity associated with antiretroviral drugs. J Neurovirol 2020; 26:642-651. [PMID: 32737860 DOI: 10.1007/s13365-020-00874-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 05/25/2020] [Accepted: 06/15/2020] [Indexed: 12/17/2022]
Abstract
Highly active antiretroviral treatment has led to unprecedented efficacy and tolerability in people living with HIV. This effect was also observed in the central nervous system with the nowadays uncommon observation of dementias; yet in more recent works milder forms are still reported in 20-30% of optimally treated individuals. The idea of a subclinical neuronal toxicity induced by antiretrovirals has been proposed and was somehow supported by the late-emerging effects associated with efavirenz use. In this manuscript we are reviewing all the potential mechanisms by which antiretroviral drugs have been associated with in vitro, ex vivo, or in vivo toxicity to cells pertaining to the central nervous system (neurons, astrocytes, oligodendrocytes, and endothelial cells). These include direct or indirect effects and pathological pathways such as amyloid deposition, damage to small cerebral vessels, and impairment in neurotransmission. The aim of this review is therefore to provide a detailed description of the available literature in order to guide further clinical research for improving patients' neurocognition and quality of life.
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Affiliation(s)
- Ilaria De Benedetto
- Department of Medical Sciences, School of Infectious and Tropical Diseases, University of Torino, c/o Amedeo di Savoia Hospital - Corso Svizzera 164, 10169, Torino, Italy.
| | - Mattia Trunfio
- Department of Medical Sciences, School of Infectious and Tropical Diseases, University of Torino, c/o Amedeo di Savoia Hospital - Corso Svizzera 164, 10169, Torino, Italy
| | | | - Stefano Bonora
- Department of Medical Sciences, School of Infectious and Tropical Diseases, University of Torino, c/o Amedeo di Savoia Hospital - Corso Svizzera 164, 10169, Torino, Italy
| | - Andrea Calcagno
- Department of Medical Sciences, School of Infectious and Tropical Diseases, University of Torino, c/o Amedeo di Savoia Hospital - Corso Svizzera 164, 10169, Torino, Italy
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Law JKC, Butler LT, Hamill MM. Predictors of Discontinuation of Efavirenz as Treatment for HIV, Due to Neuropsychiatric Side Effects, in a Multi-Ethnic Sample in the United Kingdom. AIDS Res Hum Retroviruses 2020; 36:459-466. [PMID: 31931589 DOI: 10.1089/aid.2019.0193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Efavirenz (EFV) is one of the most commonly prescribed antiretroviral therapy (ART) medications for human immunodeficiency virus-infected adults because of its favorable pharmacokinetic profile and well-documented efficacy. Nonetheless, neuropsychiatric adverse events (AE) occur in almost half of the EFV users and it is the main reason for treatment discontinuation. To identify the sociodemographic characteristics and reported neuropsychiatric side effects that placed EFV users at an increased risk of discontinuation in a multi-ethnic sample in the United Kingdom. A retrospective medical records analysis of patients prescribed EFV-containing ART in an outpatient sexual health clinic between 2010 and 2016. One hundred forty-nine medical records were reviewed. Fifty-five patients discontinued EFV within the study period. About 55.7% of patients suffered from at least one neuropsychiatric AE, the most commonly recorded symptoms were depression, vivid dreams, dizziness, and sleep disturbance. There was an inverse relationship between number of AE and EFV continuation [adjust odds ratio (OR) = 0.12; confidence interval (95% CI) = 0.03-0.44, p < .05]. Furthermore, neuropsychiatric symptoms, including depression (adjust OR = 3.01; 95% CI = 1.30-6.96, p < .05), sleep disturbance (adjust OR = 3.00; 95% CI = 1.10-8.19, p < .05), and vivid dreams (adjust OR = 2.51; 95% CI = 1.05-6.00, p < .05), were independent predictors of EFV discontinuation. The findings revealed that patients who did not experience any neuropsychiatric side effects were eight times more likely to stay on an EFV-containing regimen than those who suffered from more than three symptoms. Additionally, patients who experienced depression or sleep disturbance were at threefold elevated risk of discontinuing an EFV-based regimen. The implications for clinical practice are discussed.
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Affiliation(s)
- Johnson Kai Chun Law
- School of Psychology and Clinical Language Sciences, University of Reading, Reading, United Kingdom
| | - Laurie T Butler
- School of Psychology and Clinical Language Sciences, University of Reading, Reading, United Kingdom
- Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, United Kingdom
| | - Matthew M Hamill
- Division of Infectious Diseases, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
- Department of Sexual Health, Berkshire Healthcare NHS Foundation Trust, Bracknell, United Kingdom
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