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Soko ND, Muyambo S, Dandara MTL, Kampira E, Blom D, Jones ESW, Rayner B, Shamley D, Sinxadi P, Dandara C. Towards Evidence-Based Implementation of Pharmacogenomics in Southern Africa: Comorbidities and Polypharmacy Profiles across Diseases. J Pers Med 2023; 13:1185. [PMID: 37623436 PMCID: PMC10455498 DOI: 10.3390/jpm13081185] [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: 06/13/2023] [Revised: 07/21/2023] [Accepted: 07/23/2023] [Indexed: 08/26/2023] Open
Abstract
Pharmacogenomics may improve patient care by guiding drug selection and dosing; however, this requires prior knowledge of the pharmacogenomics of drugs commonly used in a specific setting. The aim of this study was to identify a preliminary set of pharmacogenetic variants important in Southern Africa. We describe comorbidities in 3997 patients from Malawi, South Africa, and Zimbabwe. These patient cohorts were included in pharmacogenomic studies of anticoagulation, dyslipidemia, hypertension, HIV and breast cancer. The 20 topmost prescribed drugs in this population were identified. Using the literature, a list of pharmacogenes vital in the response to the top 20 drugs was constructed leading to drug-gene pairs potentially informative in translation of pharmacogenomics. The most reported morbidity was hypertension (58.4%), making antihypertensives the most prescribed drugs, particularly amlodipine. Dyslipidemia occurred in 31.5% of the participants, and statins were the most frequently prescribed as cholesterol-lowering drugs. HIV was reported in 20.3% of the study participants, with lamivudine/stavudine/efavirenz being the most prescribed antiretroviral combination. Based on these data, pharmacogenes of immediate interest in Southern African populations include ABCB1, CYP2B6, CYP2C9, CYP2C19, CYP2D6, CYP3A4, CYP3A5, SLC22A1, SLCO1B1 and UGT1A1. Variants in these genes are a good starting point for pharmacogenomic translation programs in Southern Africa.
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Affiliation(s)
- Nyarai Desiree Soko
- Platform for Pharmacogenomics Research and Translation (PREMED), University of Cape Town, South African Medical Research Council, Cape Town 7935, South Africa
- Department of Pharmaceutical Technology, School of Allied Health Sciences, Harare Institute of Technology, Harare, Zimbabwe
- Pharmacogenomics and Drug Metabolism Research Group, Division of Human Genetics, Department of Pathology and Institute of Infectious Diseases and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town 7935, South Africa
| | - Sarudzai Muyambo
- Department of Biological Sciences and Ecology, Faculty of Science, University of Zimbabwe, Harare, Zimbabwe
| | - Michelle T. L. Dandara
- Platform for Pharmacogenomics Research and Translation (PREMED), University of Cape Town, South African Medical Research Council, Cape Town 7935, South Africa
| | - Elizabeth Kampira
- Medical Laboratory Sciences, School of Life Sciences and Health Professionals, Kamuzu University of Health Sciences (KUHES), Blantyre, Malawi
| | - Dirk Blom
- Platform for Pharmacogenomics Research and Translation (PREMED), University of Cape Town, South African Medical Research Council, Cape Town 7935, South Africa
- Division of Lipidology and Cape Heart Institute, Department of Medicine, Groote Schuur Hospital and Faculty of Health Sciences, University of Cape Town, Cape Town 7935, South Africa
| | - Erika S. W. Jones
- Platform for Pharmacogenomics Research and Translation (PREMED), University of Cape Town, South African Medical Research Council, Cape Town 7935, South Africa
- Division of Nephrology and Hypertension, Department of Medicine, Groote Schuur Hospital and Faculty of Health Sciences, University of Cape Town, Cape Town 7935, South Africa
| | - Brian Rayner
- Platform for Pharmacogenomics Research and Translation (PREMED), University of Cape Town, South African Medical Research Council, Cape Town 7935, South Africa
| | - Delva Shamley
- Division of Clinical Anatomy and Biological Anthropology, Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town 7935, South Africa
| | - Phumla Sinxadi
- Platform for Pharmacogenomics Research and Translation (PREMED), University of Cape Town, South African Medical Research Council, Cape Town 7935, South Africa
- Division of Clinical Pharmacology, Department of Medicine, Groote Schuur Hospital and Faculty of Health Sciences, University of Cape Town, Cape Town 7935, South Africa
| | - Collet Dandara
- Department of Pharmaceutical Technology, School of Allied Health Sciences, Harare Institute of Technology, Harare, Zimbabwe
- Pharmacogenomics and Drug Metabolism Research Group, Division of Human Genetics, Department of Pathology and Institute of Infectious Diseases and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town 7935, South Africa
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Sun L, Wang Z, Liu T, Zhao Q, Yu G, Sun Y, Xue X, You J, Yue Z, Mi Z, Liu H, Zhang F. TAP2 drives HLA-B*13:01-linked dapsone hypersensitivity syndrome tolerance and reactivity. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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3
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Daly AK. Pharmacogenetics of the cytochromes P450: Selected pharmacological and toxicological aspects. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2022; 95:49-72. [PMID: 35953163 DOI: 10.1016/bs.apha.2022.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
With the availability of detailed genomic data on all 57 human cytochrome P450 genes, it is clear that there is substantial variability in gene product activity with functionally significant polymorphisms reported across almost all isoforms. This article is concerned mainly with 13 P450 isoforms of particular relevance to xenobiotic metabolism. After brief review of the extent of polymorphism in each, the relevance of selected P450 isoforms to both adverse drug reaction and disease susceptibility is considered in detail. Bleeding due to warfarin and other coumarin anticoagulants is considered as an example of a type A reaction with idiosyncratic adverse drug reactions affecting the liver and skin as type B. It is clear that CYP2C9 variants contribute significantly to warfarin dose requirement and also risk of bleeding, with a minor contribution from CYP4F2. In the case of idiosyncratic adverse drug reactions, CYP2B6 variants appear relevant to both liver and skin reactions to several drugs with CYP2C9 variants also relevant to phenytoin-related skin rash. The relevance of P450 genotype to disease susceptibility is also considered but detailed genetic studies now suggest that CYP2A6 is the only P450 relevant to risk of lung cancer with alleles associated with low or absent activity clearly protective against disease. Other cytochrome P450 genotypes are generally not predictors for risk of cancer or other complex disease development.
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Affiliation(s)
- Ann K Daly
- Translational and Clinical Research Institute, Newcastle University, Newcastle Upon Tyne, United Kingdom.
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Kwara A. Could pharmacogenetics aid the prediction of nevirapine pharmacokinetics and allow individualized treatment? Pharmacogenomics 2021; 22:881-884. [PMID: 34505542 DOI: 10.2217/pgs-2021-0106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Tweetable abstract The large interindividual variability in nevirapine pharmacokinetics and clinical effects that remains unexplained by pharmacogenetic prediction is a major limitation for individualized nevirapine treatment.
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Affiliation(s)
- Awewura Kwara
- Department of Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA
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5
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Langmia IM, Just KS, Yamoune S, Brockmöller J, Masimirembwa C, Stingl JC. CYP2B6 Functional Variability in Drug Metabolism and Exposure Across Populations-Implication for Drug Safety, Dosing, and Individualized Therapy. Front Genet 2021; 12:692234. [PMID: 34322158 PMCID: PMC8313315 DOI: 10.3389/fgene.2021.692234] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 06/14/2021] [Indexed: 12/11/2022] Open
Abstract
Adverse drug reactions (ADRs) are one of the major causes of morbidity and mortality worldwide. It is well-known that individual genetic make-up is one of the causative factors of ADRs. Approximately 14 million single nucleotide polymorphisms (SNPs) are distributed throughout the entire human genome and every patient has a distinct genetic make-up which influences their response to drug therapy. Cytochrome P450 2B6 (CYP2B6) is involved in the metabolism of antiretroviral, antimalarial, anticancer, and antidepressant drugs. These drug classes are commonly in use worldwide and face specific population variability in side effects and dosing. Parts of this variability may be caused by single nucleotide polymorphisms (SNPs) in the CYP2B6 gene that are associated with altered protein expression and catalytic function. Population variability in the CYP2B6 gene leads to changes in drug metabolism which may result in adverse drug reactions or therapeutic failure. So far more than 30 non-synonymous variants in CYP2B6 gene have been reported. The occurrence of these variants show intra and interpopulation variability, thus affecting drug efficacy at individual and population level. Differences in disease conditions and affordability of drug therapy further explain why some individuals or populations are more exposed to CYP2B6 pharmacogenomics associated ADRs than others. Variabilities in drug efficacy associated with the pharmacogenomics of CYP2B6 have been reported in various populations. The aim of this review is to highlight reports from various ethnicities that emphasize on the relationship between CYP2B6 pharmacogenomics variability and the occurrence of adverse drug reactions. In vitro and in vivo studies evaluating the catalytic activity of CYP2B6 variants using various substrates will also be discussed. While implementation of pharmacogenomic testing for personalized drug therapy has made big progress, less data on pharmacogenetics of drug safety has been gained in terms of CYP2B6 substrates. Therefore, reviewing the existing evidence on population variability in CYP2B6 and ADR risk profiles suggests that, in addition to other factors, the knowledge on pharmacogenomics of CYP2B6 in patient treatment may be useful for the development of personalized medicine with regards to genotype-based prescription.
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Affiliation(s)
- Immaculate M. Langmia
- Institute of Clinical Pharmacology, University Hospital of Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany
| | - Katja S. Just
- Institute of Clinical Pharmacology, University Hospital of Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany
| | - Sabrina Yamoune
- Institute of Clinical Pharmacology, University Hospital of Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany
| | - Jürgen Brockmöller
- Department of Clinical Pharmacology, University Medical Center Göttingen, Georg-August University, Göttingen, Germany
| | - Collen Masimirembwa
- African Institute of Biomedical Science and Technology (AiBST), Harare, Zimbabwe
| | - Julia C. Stingl
- Institute of Clinical Pharmacology, University Hospital of Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany
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Li Y, Deshpande P, Hertzman RJ, Palubinsky AM, Gibson A, Phillips EJ. Genomic Risk Factors Driving Immune-Mediated Delayed Drug Hypersensitivity Reactions. Front Genet 2021; 12:641905. [PMID: 33936169 PMCID: PMC8085493 DOI: 10.3389/fgene.2021.641905] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 03/08/2021] [Indexed: 12/19/2022] Open
Abstract
Adverse drug reactions (ADRs) remain associated with significant mortality. Delayed hypersensitivity reactions (DHRs) that occur greater than 6 h following drug administration are T-cell mediated with many severe DHRs now associated with human leukocyte antigen (HLA) risk alleles, opening pathways for clinical prediction and prevention. However, incomplete negative predictive value (NPV), low positive predictive value (PPV), and a large number needed to test (NNT) to prevent one case have practically prevented large-scale and cost-effective screening implementation. Additional factors outside of HLA contributing to risk of severe T-cell-mediated DHRs include variation in drug metabolism, T-cell receptor (TCR) specificity, and, most recently, HLA-presented immunopeptidome-processing efficiencies via endoplasmic reticulum aminopeptidase (ERAP). Active research continues toward identification of other highly polymorphic factors likely to impose risk. These include those previously associated with T-cell-mediated HLA-associated infectious or auto-immune disease such as Killer cell immunoglobulin-like receptors (KIR), epistatically linked with HLA class I to regulate NK- and T-cell-mediated cytotoxic degranulation, and co-inhibitory signaling pathways for which therapeutic blockade in cancer immunotherapy is now associated with an increased incidence of DHRs. As such, the field now recognizes that susceptibility is not simply a static product of genetics but that individuals may experience dynamic risk, skewed toward immune activation through therapeutic interventions and epigenetic modifications driven by ecological exposures. This review provides an updated overview of current and proposed genetic factors thought to predispose risk for severe T-cell-mediated DHRs.
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Affiliation(s)
- Yueran Li
- Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, WA, Australia
| | - Pooja Deshpande
- Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, WA, Australia
| | - Rebecca J. Hertzman
- Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, WA, Australia
| | - Amy M. Palubinsky
- Department of Medicine, Vanderbilt University Medical Centre, Nashville, TN, United States
| | - Andrew Gibson
- Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, WA, Australia
| | - Elizabeth J. Phillips
- Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, WA, Australia
- Department of Medicine, Vanderbilt University Medical Centre, Nashville, TN, United States
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Doña I, Jurado-Escobar R, Pérez-Sánchez N, Laguna JJ, Bartra J, Testera-Montes A, de Santa María RS, Torres MJ, Cornejo-García JA. Genetic Variants Associated With Drug-Induced Hypersensitivity Reactions: towards Precision Medicine? CURRENT TREATMENT OPTIONS IN ALLERGY 2021. [DOI: 10.1007/s40521-020-00278-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Tong H, Phan NVT, Nguyen TT, Nguyen DV, Vo NS, Le L. Review on Databases and Bioinformatic Approaches on Pharmacogenomics of Adverse Drug Reactions. PHARMACOGENOMICS & PERSONALIZED MEDICINE 2021; 14:61-75. [PMID: 33469342 PMCID: PMC7812041 DOI: 10.2147/pgpm.s290781] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 12/26/2020] [Indexed: 12/27/2022]
Abstract
Pharmacogenomics has been used effectively in studying adverse drug reactions by determining the person-specific genetic factors associated with individual response to a drug. Current approaches have revealed the significant importance of sequencing technologies and sequence analysis strategies for interpreting the contribution of genetic variation in developing adverse reactions. Advance in next generation sequencing and platform brings new opportunities in validating the genetic candidates in certain reactions, and could be used to develop the preemptive tests to predict the outcome of the variation in a personal response to a drug. With the highly accumulated available data recently, the in silico approach with data analysis and modeling plays as other important alternatives which significantly support the final decisions in the transformation from research to clinical applications such as diagnosis and treatments for various types of adverse responses.
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Affiliation(s)
- Hang Tong
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam.,Vietnam National University, Ho Chi Minh City, Vietnam
| | - Nga V T Phan
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam.,Vietnam National University, Ho Chi Minh City, Vietnam
| | - Thanh T Nguyen
- Department of Translational Biomedical Informatics, Vingroup Big Data Institute, Hanoi, Vietnam
| | - Dinh V Nguyen
- Department of Respiratory, Allergy and Clinical Immunology, Vinmec International Hospital, Hanoi, Vietnam.,College of Health Sciences, VinUniversity, Hanoi, Vietnam
| | - Nam S Vo
- Department of Translational Biomedical Informatics, Vingroup Big Data Institute, Hanoi, Vietnam
| | - Ly Le
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam.,Vietnam National University, Ho Chi Minh City, Vietnam.,Department of Translational Biomedical Informatics, Vingroup Big Data Institute, Hanoi, Vietnam
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9
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Kuijper E, French L, Tensen C, Vermeer M, Bouwes Bavinck J. Clinical and pathogenic aspects of the severe cutaneous adverse reaction epidermal necrolysis (EN). J Eur Acad Dermatol Venereol 2020; 34:1957-1971. [PMID: 32415695 PMCID: PMC7496676 DOI: 10.1111/jdv.16339] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 02/25/2020] [Indexed: 12/12/2022]
Abstract
The severe cutaneous adverse reaction epidermal necrolysis (EN) which includes toxic epidermal necrolysis and the milder Stevens-Johnson syndrome is characterized by epidermal loss due to massive keratinocyte apoptosis and/or necroptosis. EN is often caused by a drug mediating a specific TCR-HLA interaction via the (pro)hapten, pharmacological interaction or altered peptide loading mechanism involving a self-peptide presented by keratinocytes. (Memory) CD8 + T cells are activated and exhibit cytotoxicity against keratinocytes via the perforin/granzyme B and granulysin pathway and Fas/FasL interaction. Alternatively drug-induced annexin release by CD14 + monocytes can induce formyl peptide receptor 1 death of keratinocytes by necroptosis. Subsequent keratinocyte death stimulates local inflammation, activating other immune cells producing pro-inflammatory molecules and downregulating regulatory T cells. Widespread epidermal necrolysis and inflammation can induce life-threatening systemic effects, leading to high mortality rates. Research into genetic susceptibility aims to identify risk factors for eventual prevention of EN. Specific HLA class I alleles show the strongest association with EN, but risk variants have also been identified in genes involved in drug metabolism, cellular drug uptake, peptide presentation and function of CD8 + T cells and other immune cells involved in cytotoxic responses. After the acute phase of EN, long-term symptoms can remain or arise mainly affecting the skin and eyes. Mucosal sequelae are characterized by occlusions and strictures due to adherence of denuded surfaces and fibrosis following mucosal inflammation. In addition, systemic pathology can cause acute and chronic hepatic and renal symptoms. EN has a large psychological impact and strongly affects health-related quality of life among EN survivors.
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Affiliation(s)
- E.C. Kuijper
- Department of DermatologyLeiden University Medical CentreLeidenThe Netherlands
| | - L.E. French
- Department of Dermatology and AllergyUniversity HospitalLMU MunichMunichGermany
| | - C.P. Tensen
- Department of DermatologyLeiden University Medical CentreLeidenThe Netherlands
| | - M.H. Vermeer
- Department of DermatologyLeiden University Medical CentreLeidenThe Netherlands
| | - J.N. Bouwes Bavinck
- Department of DermatologyLeiden University Medical CentreLeidenThe Netherlands
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10
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Oussalah A, Yip V, Mayorga C, Blanca M, Barbaud A, Nakonechna A, Cernadas J, Gotua M, Brockow K, Caubet J, Bircher A, Atanaskovic‐Markovic M, Demoly P, Kase‐Tanno L, Terreehorst I, Laguna JJ, Romano A, Guéant J, Pirmohamed M. Genetic variants associated with T cell-mediated cutaneous adverse drug reactions: A PRISMA-compliant systematic review-An EAACI position paper. Allergy 2020; 75:1069-1098. [PMID: 31899808 DOI: 10.1111/all.14174] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 09/27/2019] [Accepted: 10/23/2019] [Indexed: 12/11/2022]
Abstract
Drug hypersensitivity reactions (DHRs) are associated with high global morbidity and mortality. Cutaneous T cell-mediated reactions classically occur more than 6 hours after drug administration and include life-threatening conditions such as toxic epidermal necrolysis, Stevens-Johnson syndrome, and hypersensitivity syndrome. Over the last 20 years, significant advances have been made in our understanding of the pathogenesis of DHRs with the identification of human leukocyte antigens as predisposing factors. This has led to the development of pharmacogenetic screening tests, such as HLA-B*57:01 in abacavir therapy, which has successfully reduced the incidence of abacavir hypersensitivity reactions. We have completed a PRISMA-compliant systematic review to identify genetic associations that have been reported in DHRs. In total, 105 studies (5554 cases and 123 548 controls) have been included in the review reporting genetic associations with carbamazepine (n = 31), other aromatic antiepileptic drugs (n = 24), abacavir (n = 11), nevirapine (n = 14), trimethoprim-sulfamethoxazole (n = 11), dapsone (n = 4), allopurinol (n = 10), and other drugs (n = 5). The most commonly reported genetic variants associated with DHRs are located in human leukocyte antigen genes and genes involved in drug metabolism pathways. Increasing our understanding of genetic variants that contribute to DHRs will allow us to improve diagnosis, develop new treatments, and predict and prevent DHRs in the future.
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Affiliation(s)
- Abderrahim Oussalah
- INSERM UMR_S 1256 NGERE – Nutrition, Genetics, and Environmental Risk Exposure Faculty of Medicine of Nancy University of Lorraine Nancy France
- Department of Molecular Medicine Division of Biochemistry, Molecular Biology, and Nutrition University Hospital of Nancy Nancy France
| | - Vincent Yip
- Department of Molecular and Clinical Pharmacology MRC Centre for Drug Safety Science University of Liverpool Liverpool UK
- Royal Liverpool and Broadgreen University Hospital NHS Trust Liverpool UK
- The Wolfson Centre for Personalized Medicine Institute of Translational Medicine University of Liverpool Liverpool UK
| | - Cristobalina Mayorga
- Allergy Research Group Instituto de Investigación Biomédica de Málaga‐IBIMA‐ARADyAL Málaga Spain
- Allergy Unit Hospital Regional Universitario de Málaga‐ARADyAL Málaga Spain
| | - Miguel Blanca
- Allergy Research Group Instituto de Investigación Biomédica de Málaga‐IBIMA‐ARADyAL Málaga Spain
- Allergy Unit Hospital Regional Universitario de Málaga‐ARADyAL Málaga Spain
| | - Annick Barbaud
- Dermatology and Allergology Department Tenon Hospital (AP‐HP) Sorbonne Universities UPMC University Paris 06 Paris France
| | - Alla Nakonechna
- Allergy and Immunology Clinic Royal Liverpool and Broadgreen University Hospital Liverpool UK
| | - Josefina Cernadas
- Department of Allergy and Clinical Immunology Centro Hospitalar Universitário de Sâo João Porto Portugal
- Allergy Clinic Hospital Lusíadas Porto Portugal
| | - Maia Gotua
- Center for Allergy and Immunology Research Tbilisi Georgia
| | - Knut Brockow
- Klinik für Dermatologie und Allergologie am Biederstein Technische Universität München München Germany
| | | | - Andreas Bircher
- Dermatologie/Allergologie Universitätsspital Basel Basel Switzerland
| | - Marina Atanaskovic‐Markovic
- Medical Faculty Department of Allergology and Pulmonology University Children's Hospital University of Belgrade Belgrade Serbia
| | - Pascal Demoly
- Division of Allergy Department of Pulmonology Hôpital Arnaud de Villeneuve University Hospital of Montpellier Montpellier France
| | | | - Ingrid Terreehorst
- Academisch Medisch Centrum University of Amsterdam Amsterdam Netherlands
| | | | | | - Jean‐Louis Guéant
- INSERM UMR_S 1256 NGERE – Nutrition, Genetics, and Environmental Risk Exposure Faculty of Medicine of Nancy University of Lorraine Nancy France
- Department of Molecular Medicine Division of Biochemistry, Molecular Biology, and Nutrition University Hospital of Nancy Nancy France
| | - Munir Pirmohamed
- Department of Molecular and Clinical Pharmacology MRC Centre for Drug Safety Science University of Liverpool Liverpool UK
- Royal Liverpool and Broadgreen University Hospital NHS Trust Liverpool UK
- The Wolfson Centre for Personalized Medicine Institute of Translational Medicine University of Liverpool Liverpool UK
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11
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Nguefeu Nkenfou C, Atogho Tiedeu B, Nguefeu Nkenfou C, Nji AM, Chedjou JP, Tah Fomboh C, Kouanfack C, Mbacham WF. Adverse Drug Reactions Associated with CYP 2B6 Polymorphisms in HIV/AIDS-Treated Patients in Yaoundé, Cameroon. Appl Clin Genet 2019; 12:261-268. [PMID: 31920362 PMCID: PMC6941599 DOI: 10.2147/tacg.s226318] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 11/23/2019] [Indexed: 01/04/2023] Open
Abstract
PURPOSE The metabolism of antiretroviral drugs is subject to individual variations of the CYP 2B6 gene. The objective of this study was to evaluate the prevalence of CYP 2B6 516 G>T and 983 T>C polymorphisms and investigate their association with the development of adverse drug reactions (ADRs) in people living with HIV/AIDS in Cameroon. PATIENTS AND METHODS A total number of 122 patients, attending the Yaoundé Central Hospital HIV Day Clinic, consented to take part in this study. Blood specimens were collected and DNA was extracted using the Chelex method. Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) was performed for the detection of CYP 2B6 Single-Nucleotide Polymorphisms (SNPs). Genotype frequencies were compared between groups with or without ADRs. Logistic regression analysis was performed to assess association between genotype and adverse effects of antiretroviral therapy (ART). RESULTS Three types of metabolizers were identified: extensive, intermediate and slow. For the 516G>T polymorphism, prevalences of 8.2% GG, 65.6% GT and 26.2% TT were obtained. For the 983T>C polymorphism, 89.3% TT, 4.1% CT and 6.6% CC prevalences were obtained. Those homozygous for the wild-type allele (516GG) were less likely to develop ADR with a statistically significant difference (OR=0.885, P=0.029). For the CYP2B6 T983C SNP, homozygous mutants (CC) may present a higher risk (threefold) of developing adverse reactions (OR=2.677, P=0.164). CONCLUSION These findings demonstrate that ADRs among HIV/AIDS patients under ART may be associated with the genetic variability of the metabolizing enzyme CYP 2B6. Genotyping for this gene may guide the better administration of Efavirenz and Nevirapine to Cameroonian patients.
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Affiliation(s)
- Carine Nguefeu Nkenfou
- Department of Biochemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
- The Biotechnology Center, University of Yaoundé I, Yaoundé, Cameroon
| | - Barbara Atogho Tiedeu
- Department of Biochemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
- The Biotechnology Center, University of Yaoundé I, Yaoundé, Cameroon
| | - Celine Nguefeu Nkenfou
- Systems Biology, Chantal Biya’ International Reference Centre for Research on HIV and AIDS Prevention and Management (CBIRC), Yaoundé, Cameroon
- Department of Biology, Higher Teachers’ Training College, University of Yaoundé I, Yaoundé, Cameroon
- Molecular Biology Center Yaoundé, Yaoundé, Cameroon
| | - Akindeh M Nji
- Department of Biochemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
- The Biotechnology Center, University of Yaoundé I, Yaoundé, Cameroon
| | - Jean Paul Chedjou
- Department of Biochemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
- The Biotechnology Center, University of Yaoundé I, Yaoundé, Cameroon
| | - Calvino Tah Fomboh
- The Biotechnology Center, University of Yaoundé I, Yaoundé, Cameroon
- Catholic University of Yaoundé (UCAC), Yaoundé, Cameroon
| | - Charles Kouanfack
- Day Care Unit, Central Hospital Yaoundé, Yaoundé, Cameroon
- Department of Public Health, Faculty of Medicine and Pharmaceutical Sciences, University of Dschang, Dschang, Cameroon
| | - Wilfred F Mbacham
- Department of Biochemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
- The Biotechnology Center, University of Yaoundé I, Yaoundé, Cameroon
- Department of Public Health, Faculty of Medicine and Biomedical Sciences, University of Yaoundé I, Yaoundé, Cameroon
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12
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Pérez-Sánchez N, Jurado-Escobar R, Doña I, Soriano-Gomis V, Moreno-Aguilar C, Bartra J, Isidoro-García M, Torres MJ, Cornejo-García JA. Pharmacogenomics as a Tool for Management of Drug Hypersensitivity Reactions. CURRENT TREATMENT OPTIONS IN ALLERGY 2019. [DOI: 10.1007/s40521-019-0199-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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Stillemans G, Belkhir L, Hesselink DA, Haufroid V, Elens L. Pharmacogenetic associations with cytochrome P450 in antiretroviral therapy: what does the future hold? Expert Opin Drug Metab Toxicol 2018; 14:601-611. [PMID: 29775551 DOI: 10.1080/17425255.2018.1478964] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Several antiretroviral drugs used to treat infection with the human immunodeficiency virus (HIV) are substrates of enzymes belonging to the cytochrome P450 (CYP) superfamily, which are polymorphically expressed. It may therefore be useful to take into account the genetic variation in these enzymes to predict the likelihood of anti-HIV treatment success, toxicity and the potential for drug-drug interactions. Areas covered: In this manuscript, the authors discuss the current state of knowledge regarding pharmacogenetic associations between CYP and all major antiretrovirals, as well as the importance of these associations. Expert opinion: While many pharmacogenetic associations for CYP have been described in the literature, replication studies are sometimes lacking. The implementation of this knowledge in clinical practice also remains difficult. Further efforts are required both to expand this field of knowledge and to enable its use in everyday clinical practice.
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Affiliation(s)
- Gabriel Stillemans
- a Integrated Pharmacometrics, Pharmacogenomics and Pharmacokinetics , Louvain Drug Research Institute, Université catholique de Louvain , Brussels , Belgium.,b Louvain centre for Toxicology and Applied Pharmacology, Institut de recherche expérimentale et clinique , Université catholique de Louvain , Brussels , Belgium
| | - Leila Belkhir
- b Louvain centre for Toxicology and Applied Pharmacology, Institut de recherche expérimentale et clinique , Université catholique de Louvain , Brussels , Belgium.,c AIDS Reference Center, Department of Internal Medicine , Cliniques universitaires Saint-Luc, Université catholique de Louvain , Brussels , Belgium
| | - Dennis A Hesselink
- d Department of Internal Medicine, Division of Nephrology and Transplantation and Rotterdam Transplant Group. Erasmus MC , University Medical Center Rotterdam , Rotterdam , The Netherlands
| | - Vincent Haufroid
- b Louvain centre for Toxicology and Applied Pharmacology, Institut de recherche expérimentale et clinique , Université catholique de Louvain , Brussels , Belgium.,e Department of Clinical Chemistry , Cliniques universitaires Saint-Luc , Brussels , Belgium
| | - Laure Elens
- a Integrated Pharmacometrics, Pharmacogenomics and Pharmacokinetics , Louvain Drug Research Institute, Université catholique de Louvain , Brussels , Belgium.,b Louvain centre for Toxicology and Applied Pharmacology, Institut de recherche expérimentale et clinique , Université catholique de Louvain , Brussels , Belgium
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14
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Sukasem C, Katsila T, Tempark T, Patrinos GP, Chantratita W. Drug-Induced Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis Call for Optimum Patient Stratification and Theranostics via Pharmacogenomics. Annu Rev Genomics Hum Genet 2018; 19:329-353. [PMID: 29652519 DOI: 10.1146/annurev-genom-083115-022324] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The Global Genomic Medicine Collaborative, a multinational coalition of genomic and policy experts working to implement genomics in clinical care, considers pharmacogenomics to be among the first areas in genomic medicine that can provide guidance in routine clinical practice, by linking genetic variation and drug response. Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are severe life-threatening reactions to medications with a high incidence worldwide. Genomic screening prior to drug administration is a key opportunity and potential paradigm for using genomic medicine to reduce morbidity and mortality and ultimately eliminate one of the most devastating adverse drug reactions. This review focuses on the current understanding of the surveillance, pathogenesis, and treatment of SJS/TEN, including the role of genomics and pharmacogenomics in the etiology, treatment, and eradication of preventable causes of drug-induced SJS/TEN. Gaps, unmet needs, and priorities for future research have been identified for the optimal management of drug-induced SJS/TEN in various ethnic populations. Pharmacogenomics holds great promise for optimal patient stratification and theranostics, yet its clinical implementation needs to be cost-effective and sustainable.
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Affiliation(s)
- Chonlaphat Sukasem
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand.,Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC), Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand.,South East Asian Pharmacogenomics Research Network (SEAPHARM)
| | - Theodora Katsila
- Department of Pharmacy, School of Health Sciences, University of Patras, GR-26504 Patras, Greece
| | - Therdpong Tempark
- Department of Pediatrics, Faculty of Medicine, King Chulalongkorn Memorial Hospital, Chulalongkorn University, Bangkok 10330, Thailand
| | - George P Patrinos
- Department of Pharmacy, School of Health Sciences, University of Patras, GR-26504 Patras, Greece.,Department of Pathology, College of Medicine and Health Sciences, United Arab Emirates University, Al-Ain, United Arab Emirates
| | - Wasun Chantratita
- South East Asian Pharmacogenomics Research Network (SEAPHARM).,Excellence Center for Medical Genomics, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand;
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15
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Cusato J, Allegra S, Nicolò AD, Calcagno A, D'Avolio A. Precision medicine for HIV: where are we? Pharmacogenomics 2018; 19:145-165. [DOI: 10.2217/pgs-2017-0123] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
To date, antiretroviral therapy is highly effective in HIV-affected patients, but the individualization of such a life-long therapy may be advised. This review briefly summarizes the main factors involved in the potential personalization of antiretroviral treatment. Relevant articles in English were identified by PubMed and recent congresses’ abstracts. Foremost influences concerning pharmacodynamics, therapeutic drug monitoring, pharmacogenetics, comorbidities, immune recovery and viral characteristics affecting the healthcare of HIV-positive patients are listed here. Furthermore, pharmacoeconomic aspects are mentioned. Applying pharmacokinetic and pharmacogenetic knowledge may be informative and guide the better choice of treatment in order to achieve long-term efficacy and avoid adverse events. Randomized investigations of the clinical relevance of tailored antiretroviral regimens are needed in order to obtain a better management of HIV/AIDS-affected patients.
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Affiliation(s)
- Jessica Cusato
- Department of Medical Sciences; University of Turin – ASL ‘Città di Torino’ Laboratory of Clinical Pharmacology and Pharmacogenetics; Amedeo di Savoia Hospital, Turin, Italy
| | - Sarah Allegra
- Department of Medical Sciences; University of Turin – ASL ‘Città di Torino’ Laboratory of Clinical Pharmacology and Pharmacogenetics; Amedeo di Savoia Hospital, Turin, Italy
| | - Amedeo De Nicolò
- Department of Medical Sciences; University of Turin – ASL ‘Città di Torino’ Laboratory of Clinical Pharmacology and Pharmacogenetics; Amedeo di Savoia Hospital, Turin, Italy
| | - Andrea Calcagno
- Department of Medical Sciences; University of Turin – ASL ‘Città di Torino’ Laboratory of Clinical Pharmacology and Pharmacogenetics; Amedeo di Savoia Hospital, Turin, Italy
| | - Antonio D'Avolio
- Department of Medical Sciences; University of Turin – ASL ‘Città di Torino’ Laboratory of Clinical Pharmacology and Pharmacogenetics; Amedeo di Savoia Hospital, Turin, Italy
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16
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Ciccacci C, Latini A, Politi C, Mancinelli S, Marazzi MC, Novelli G, Palombi L, Borgiani P. Impact of glutathione transferases genes polymorphisms in nevirapine adverse reactions: a possible role for GSTM1 in SJS/TEN susceptibility. Eur J Clin Pharmacol 2017; 73:1253-1259. [PMID: 28689274 DOI: 10.1007/s00228-017-2295-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 06/29/2017] [Indexed: 12/12/2022]
Abstract
PURPOSE Nevirapine (NVP) is used in developing countries as first-line treatment of HIV infection. Unfortunately, its use is associated with common serious adverse drug reactions, such as liver toxicity and the most severe and rare Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN). GSTT1 and GSTM1 genes code for enzymes involved in the metabolism of a wide range of drugs. We hypothesized that this gene variability could be implicated in NVP adverse reactions. METHODS We analyzed the GSTM1 and GSTT1 null genotypes by multiplex PCR in a population of 181 patients from Mozambique, treated with NVP. A case/control association study was performed. We also counted the number of risk alleles in SJS/TEN patients and in controls, including the GSTM1 null genotype and four previously identified risk alleles in CYP2B6, HCP5, and TRAF3IP2 genes. RESULTS Among patients, 27 had developed SJS/TEN and 76 had developed hepatotoxicity during the treatment. The GSTM1 null genotype was more frequent in the cases with SJS/TEN than in the controls (OR = 2.94, P = 0.027). This association is also observed when other risk factors are taken into account, by a multivariate analysis (P = 0.024 and OR = 3.58). The risk allele counting analysis revealed a significantly higher risk for SJS/TEN in patients carrying three or four risk alleles. Moreover, all subjects with five or six risk alleles developed SJS/TEN, while subjects without any risk alleles were present only in the control group. CONCLUSIONS We observed an association between GSTM1 and SJS/TEN susceptibility. Moreover, GSTM1 contributes to the definition of a genetic risk profile for SJS/TEN susceptibility.
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Affiliation(s)
- Cinzia Ciccacci
- Department of Biomedicine and Prevention, Genetics Section, University of Rome Tor Vergata, Via Montpellier 1, 00133, Rome, Italy.
| | - Andrea Latini
- Department of Biomedicine and Prevention, Genetics Section, University of Rome Tor Vergata, Via Montpellier 1, 00133, Rome, Italy
| | - Cristina Politi
- Department of Biomedicine and Prevention, Genetics Section, University of Rome Tor Vergata, Via Montpellier 1, 00133, Rome, Italy
| | - Sandro Mancinelli
- Department of Biomedicine and Prevention, Epidemiology Section, University of Rome Tor Vergata, 00133, Rome, Italy
| | - Maria C Marazzi
- Department of Human Sciences, LUMSA University, 00193, Rome, Italy
| | - Giuseppe Novelli
- Department of Biomedicine and Prevention, Genetics Section, University of Rome Tor Vergata, Via Montpellier 1, 00133, Rome, Italy
| | - Leonardo Palombi
- Department of Biomedicine and Prevention, Epidemiology Section, University of Rome Tor Vergata, 00133, Rome, Italy
| | - Paola Borgiani
- Department of Biomedicine and Prevention, Genetics Section, University of Rome Tor Vergata, Via Montpellier 1, 00133, Rome, Italy
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17
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Dekker SJ, Zhang Y, Vos JC, Vermeulen NPE, Commandeur JNM. Different Reactive Metabolites of Nevirapine Require Distinct Glutathione S-Transferase Isoforms for Bioinactivation. Chem Res Toxicol 2016; 29:2136-2144. [DOI: 10.1021/acs.chemrestox.6b00250] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Stefan J. Dekker
- Division of Molecular Toxicology,
Amsterdam Institute for Molecules Medicine and Systems (AIMMS), Vrije Universiteit, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Yongjie Zhang
- Division of Molecular Toxicology,
Amsterdam Institute for Molecules Medicine and Systems (AIMMS), Vrije Universiteit, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - J. Chris Vos
- Division of Molecular Toxicology,
Amsterdam Institute for Molecules Medicine and Systems (AIMMS), Vrije Universiteit, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Nico P. E. Vermeulen
- Division of Molecular Toxicology,
Amsterdam Institute for Molecules Medicine and Systems (AIMMS), Vrije Universiteit, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Jan N. M. Commandeur
- Division of Molecular Toxicology,
Amsterdam Institute for Molecules Medicine and Systems (AIMMS), Vrije Universiteit, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
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18
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Pharmacokinetic, Pharmacogenetic, and Other Factors Influencing CNS Penetration of Antiretrovirals. AIDS Res Treat 2016; 2016:2587094. [PMID: 27777797 PMCID: PMC5061948 DOI: 10.1155/2016/2587094] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 08/21/2016] [Indexed: 12/22/2022] Open
Abstract
Neurological complications associated with the human immunodeficiency virus (HIV) are a matter of great concern. While antiretroviral (ARV) drugs are the cornerstone of HIV treatment and typically produce neurological benefit, some ARV drugs have limited CNS penetration while others have been associated with neurotoxicity. CNS penetration is a function of several factors including sieving role of blood-brain and blood-CSF barriers and activity of innate drug transporters. Other factors are related to pharmacokinetics and pharmacogenetics of the specific ARV agent or mediated by drug interactions, local inflammation, and blood flow. In this review, we provide an overview of the various factors influencing CNS penetration of ARV drugs with an emphasis on those commonly used in sub-Saharan Africa. We also summarize some key associations between ARV drug penetration, CNS efficacy, and neurotoxicity.
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19
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Mhandire D, Lacerda M, Castel S, Mhandire K, Zhou D, Swart M, Shamu T, Smith P, Musingwini T, Wiesner L, Stray-Pedersen B, Dandara C. Effects of CYP2B6 and CYP1A2 Genetic Variation on Nevirapine Plasma Concentration and Pharmacodynamics as Measured by CD4 Cell Count in Zimbabwean HIV-Infected Patients. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2016; 19:553-62. [PMID: 26348712 DOI: 10.1089/omi.2015.0104] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The extremely high prevalence of HIV/AIDS in sub-Saharan Africa and limitations of current antiretroviral medicines demand new tools to optimize therapy such as pharmacogenomics for person-to-person variations. African populations exhibit greater genetic diversity than other world populations, thus making it difficult to extrapolate findings from one population to another. Nevirapine, an antiretroviral medicine, displays large plasma concentration variability which adversely impacts therapeutic virological response. This study, therefore, aimed to identify sources of variability in nevirapine pharmacokinetics and pharmacodynamics, focusing on genetic variation in CYP2B6 and CYP1A2. Using a cross-sectional study design, 118 HIV-infected adult Zimbabwean patients on nevirapine-containing highly active antiretroviral therapy (HAART) were characterized for three key functional single nucleotide polymorphisms (SNPs), CYP2B6 c.516G>T (rs3745274), CYP2B6 c.983T>C (rs28399499), and CYP1A2 g.-163C>A (rs762551). We investigated whether genotypes at these loci were associated with nevirapine plasma concentration, a therapeutic biomarker, and CD4 cell count, a biomarker of disease progression. CYP2B6 and CYP1A2 were chosen as the candidate genes based on reports in literature, as well as their prominence in the metabolism of efavirenz, a drug in the same class with nevirapine. Nevirapine plasma concentration was determined using LC-MS/MS. The mean nevirapine concentration for CYP2B6 c.516T/T genotype differed significantly from that of 516G/G (p < 0.001) and 516G/T (p < 0.01) genotypes, respectively. There were also significant differences in mean nevirapine concentration between CYP2B6 c.983T > C genotypes (p = 0.04). Importantly, the CYP1A2 g.-163C>A SNP was significantly associated with the pharmacodynamics endpoint, the CD4 cell count (p = 0.012). Variant allele frequencies for the three SNPs observed in this Zimbabwean group were similar to other African population groups but different to observations among Caucasian and Asian populations. We conclude that CYP2B6 c.516G>T and CYP2B6 c.983T>C could be important sources of nevirapine pharmacokinetic variability that could be considered for dosage optimization, while CYP1A2 g.-163C>A seems to be associated with HIV disease progression. These inter- and intra-population pharmacokinetic and pharmacodynamics differences suggest that a single prescribed dosage may not be appropriate for the treatment of disease. Further research into a personalized nevirapine regimen is required.
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Affiliation(s)
- Doreen Mhandire
- 1 Department of Chemical Pathology, College of Health Sciences, University of Zimbabwe , Harare, Zimbabwe
| | - Miguel Lacerda
- 2 Department of Statistical Sciences, Faculty of Science, University of Cape Town , Cape Town, South Africa
| | - Sandra Castel
- 3 Division of Clinical Pharmacology, Department of Medicine, Faculty of Health Sciences, University of Cape Town , Cape Town, South Africa
| | - Kudakwashe Mhandire
- 1 Department of Chemical Pathology, College of Health Sciences, University of Zimbabwe , Harare, Zimbabwe
| | - Danai Zhou
- 4 Department of Medical Laboratory Sciences, College of Health Sciences, University of Zimbabwe , Harare, Zimbabwe .,7 Institute of Clinical Medicine, University of Oslo , Oslo, Norway
| | - Marelize Swart
- 5 Division of Human Genetics, Department of Clinical Laboratory Sciences and Institute for Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town , Cape Town, South Africa
| | | | - Peter Smith
- 3 Division of Clinical Pharmacology, Department of Medicine, Faculty of Health Sciences, University of Cape Town , Cape Town, South Africa
| | - Tutsirai Musingwini
- 4 Department of Medical Laboratory Sciences, College of Health Sciences, University of Zimbabwe , Harare, Zimbabwe
| | - Lubbe Wiesner
- 3 Division of Clinical Pharmacology, Department of Medicine, Faculty of Health Sciences, University of Cape Town , Cape Town, South Africa
| | | | - Collet Dandara
- 5 Division of Human Genetics, Department of Clinical Laboratory Sciences and Institute for Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town , Cape Town, South Africa
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20
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Mpeta B, Kampira E, Castel S, Mpye KL, Soko ND, Wiesner L, Smith P, Skelton M, Lacerda M, Dandara C. Differences in genetic variants in lopinavir disposition among HIV-infected Bantu Africans. Pharmacogenomics 2016; 17:679-90. [PMID: 27142945 DOI: 10.2217/pgs.16.14] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
INTRODUCTION Variability in lopinavir (LPV) plasma concentration among patients could be due to genetic polymorphisms. This study set to evaluate significance of variants in CYP3A4/5, SLCO1B1 and ABCC2 on LPV plasma concentration among African HIV-positive patients. MATERIALS & METHODS Eighty-six HIV-positive participants on ritonavir (LPV/r) were genetically characterized and LPV plasma concentration determined. RESULTS & DISCUSSION LPV plasma concentrations differed >188-fold (range 0.0206-38.6 µg/ml). Both CYP3A4*22 and SLCO1B1 rs4149056G (c.521C) were not observed in this cohort. CYP3A4*1B, CYP3A5*3, CYP3A5*6 and ABCC2 c.1249G>A which have been associated with LPV plasma concentration, showed no significant association. CONCLUSION These findings highlight the need to include African groups in genomics research to identify variants of pharmacogenomics significance.
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Affiliation(s)
- Bafokeng Mpeta
- Division of Human Genetics, Department of Pathology (formerly Clinical Laboratory Sciences) & Institute of Infectious Disease & Molecular Medicine, Faculty of Health Sciences, University of Cape Town, South Africa
| | - Elizabeth Kampira
- Malawi College of Health Sciences, University of Malawi, Blantyre, Malawi
| | - Sandra Castel
- Division of Clinical Pharmacology, Department of Medicine, Faculty of Health Sciences, University of Cape Town, South Africa
| | - Keleabetswe L Mpye
- Division of Human Genetics, Department of Pathology (formerly Clinical Laboratory Sciences) & Institute of Infectious Disease & Molecular Medicine, Faculty of Health Sciences, University of Cape Town, South Africa
| | - Nyarai D Soko
- Division of Human Genetics, Department of Pathology (formerly Clinical Laboratory Sciences) & Institute of Infectious Disease & Molecular Medicine, Faculty of Health Sciences, University of Cape Town, South Africa
| | - Lubbe Wiesner
- Division of Clinical Pharmacology, Department of Medicine, Faculty of Health Sciences, University of Cape Town, South Africa
| | - Peter Smith
- Division of Clinical Pharmacology, Department of Medicine, Faculty of Health Sciences, University of Cape Town, South Africa
| | - Michelle Skelton
- Division of Human Genetics, Department of Pathology (formerly Clinical Laboratory Sciences) & Institute of Infectious Disease & Molecular Medicine, Faculty of Health Sciences, University of Cape Town, South Africa
| | - Miguel Lacerda
- Department of Statistical Sciences, Faculty of Science, University of Cape Town, South Africa
| | - Collet Dandara
- Division of Human Genetics, Department of Pathology (formerly Clinical Laboratory Sciences) & Institute of Infectious Disease & Molecular Medicine, Faculty of Health Sciences, University of Cape Town, South Africa
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21
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Hernández Arroyo MJ, Cabrera Figueroa SE, Valverde Merino MP, Hurlé ADG. A pharmacist’s role in the individualization of treatment of HIV patients. Per Med 2016; 13:169-188. [DOI: 10.2217/pme.15.54] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The pharmacological treatment of HIV is complex and varies considerably among patients, as does the response of patients to therapy, requiring treatment plans that are closely tailored to individual needs. Pharmacists can take an active role in individualizing care by employing their knowledge of pharmacokinetics and pharmacogenetics and by interacting directly with patients in counseling sessions. These strategies promote the following: maintenance of plasma concentrations of antiretroviral agents within therapeutic ranges, prediction of pharmacological response of patients with certain genetic characteristics, and clinical control of HIV through the correct use of antiretroviral treatments. Together, these strategies can be used to tailor antiretroviral therapy to individual patients, thus improving treatment efficacy and safety.
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Affiliation(s)
| | - Salvador Enrique Cabrera Figueroa
- Pharmacy Institute, University Austral of Chile, Valdivia, Chile
- Pharmacy Service, University Hospital of Salamanca, Paseo de San Vicente 58, 37007 Salamanca, Spain
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22
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Rufini S, Ciccacci C, Politi C, Giardina E, Novelli G, Borgiani P. Stevens-Johnson syndrome and toxic epidermal necrolysis: an update on pharmacogenetics studies in drug-induced severe skin reaction. Pharmacogenomics 2015; 16:1989-2002. [PMID: 26555663 DOI: 10.2217/pgs.15.128] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Stevens-Johnson syndrome and toxic epidermal necrolysis are severe, life-threatening drug reactions involving skin and membranes mucous, which are associated with significant morbidity and mortality and triggered, especially by drug exposure. Different studies have demonstrated that drug response is a multifactorial character and that the interindividual variability in this response depends on both environmental and genetic factors. The last ones have a relevant significance. In fact, the identification of new specific genetic markers involved in the response to drugs, will be of great utility to establish a more personalized therapeutic approach and to prevent the appearance of these adverse reactions. In this review, we summarize recent progresses in the Pharmacogenetics studies related to Stevens-Johnson syndrome/toxic epidermal necrolysis reporting the major genetic factors identified in the last years as associated with the disease and highlighting the use of some of these genomic variants in the clinical practice.
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Affiliation(s)
- Sara Rufini
- Department of Biomedicine & Prevention, Genetics Unit, University of Rome "Tor Vergata", Italy
| | - Cinzia Ciccacci
- Department of Biomedicine & Prevention, Genetics Unit, University of Rome "Tor Vergata", Italy
| | - Cristina Politi
- Department of Biomedicine & Prevention, Genetics Unit, University of Rome "Tor Vergata", Italy
| | - Emiliano Giardina
- Department of Biomedicine & Prevention, Genetics Unit, University of Rome "Tor Vergata", Italy.,Laboratory of Molecular Genetics UILDM, Fondazione Santa Lucia, Rome, Italy
| | - Giuseppe Novelli
- Department of Biomedicine & Prevention, Genetics Unit, University of Rome "Tor Vergata", Italy
| | - Paola Borgiani
- Department of Biomedicine & Prevention, Genetics Unit, University of Rome "Tor Vergata", Italy
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23
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White KD, Chung WH, Hung SI, Mallal S, Phillips EJ. Evolving models of the immunopathogenesis of T cell-mediated drug allergy: The role of host, pathogens, and drug response. J Allergy Clin Immunol 2015; 136:219-34; quiz 235. [PMID: 26254049 DOI: 10.1016/j.jaci.2015.05.050] [Citation(s) in RCA: 159] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 05/11/2015] [Accepted: 05/12/2015] [Indexed: 12/12/2022]
Abstract
Immune-mediated (IM) adverse drug reactions (ADRs) are an underrecognized source of preventable morbidity, mortality, and cost. Increasingly, genetic variation in the HLA loci is associated with risk of severe reactions, highlighting the importance of T-cell immune responses in the mechanisms of both B cell-mediated and primary T cell-mediated IM-ADRs. In this review we summarize the role of host genetics, microbes, and drugs in IM-ADR development; expand on the existing models of IM-ADR pathogenesis to address multiple unexplained observations; discuss the implications of this work in clinical practice today; and describe future applications for preclinical drug toxicity screening, drug design, and development.
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Affiliation(s)
- Katie D White
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tenn
| | - Wen-Hung Chung
- Department of Dermatology, Chang Gung Memorial Hospital, Keelung, Taiwan; Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Linkou, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Shuen-Iu Hung
- Program in Molecular Medicine, Institute of Pharmacology, School of Medicine, Infection and Immunity Research Center, National Yang-Ming University, Taipei, Taiwan
| | - Simon Mallal
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tenn; Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, Australia
| | - Elizabeth J Phillips
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tenn; Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, Australia.
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Asensi V, Collazos J, Valle-Garay E. Can antiretroviral therapy be tailored to each human immunodeficiency virus-infected individual? Role of pharmacogenomics. World J Virol 2015; 4:169-177. [PMID: 26279978 PMCID: PMC4534808 DOI: 10.5501/wjv.v4.i3.169] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 05/07/2015] [Accepted: 06/11/2015] [Indexed: 02/05/2023] Open
Abstract
Pharmacogenetics refers to the effect of single nucleotide polymorphisms (SNPs) within human genes on drug therapy outcome. Its study might help clinicians to increase the efficacy of antiretroviral drugs by improving their pharmacokinetics and pharmacodynamics and by decreasing their side effects. HLAB*5701 genotyping to avoid the abacavir-associated hypersensitivity reaction (HSR) is a cost-effective diagnostic tool, with a 100% of negative predictive value, and, therefore, it has been included in the guidelines for treatment of human immunodeficiency virus (HIV) infection. HALDRB*0101 associates with nevirapine-induced HSR. CYP2B6 SNPs modify efavirenz plasma levels and their genotyping help decreasing its central nervous system, hepatic and HSR toxicities. Cytokines SNPs might influence the development of drug-associated lipodystrophy. APOA5, APOB, APOC3 and APOE SNPs modify lipids plasma levels and might influence the coronary artery disease risk of HIV-infected individuals receiving antiretroviral therapy. UGT1A1*28 and ABCB1 (MDR1) 3435C > T SNPs modify atazanavir plasma levels and enhance hyperbilirubinemia. Much more effort needs to be still devoted to complete large prospective studies with multiple SNPs genotyping in order to reveal more clues about the role played by host genetics in antiretroviral drug efficacy and toxicity.
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25
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Borroni RG. Role of dermatology in pharmacogenomics: drug-induced skin injury. Pharmacogenomics 2015; 16:401-12. [PMID: 25823788 DOI: 10.2217/pgs.15.4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Different individuals may respond diversely to the same drug, in terms of efficacy and toxicity. Adverse drug reactions cause about 6% of all hospital admissions and account for up to 9% of hospitalization costs. Drug-induced skin injury (DISI) is the most common presentation of adverse drug reactions, ranging from maculopapular eruptions to severe adverse cutaneous drug reactions (SCARs) with mortality of up to 40%. Specific genetic polymorphisms confer susceptibility to different types of DISI. Identifying patients genetically at risk for SCARs is one of the goals of pharmacogenomics. In this article, the aspects of clinical dermatology relevant to the pharmacogenetics of DISI are reviewed. Many SCARs are now preventable, with consequent reduction of morbidity, mortality and healthcare costs.
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