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Saleh Faisal M, Jamil A, Ali N, Alshahrani AM, Almarshad F. Distribution pattern of UGT1A6 and UGT2B7 gene polymorphism and its impact on the pharmacokinetics of valproic acid and carbamazepine: Prospective genetic association study conducted in Pakistani patients with epilepsy. Gene 2024; 892:147886. [PMID: 37820941 DOI: 10.1016/j.gene.2023.147886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 08/14/2023] [Accepted: 10/06/2023] [Indexed: 10/13/2023]
Abstract
BACKGROUND Ethnic variation is one of the important factors in clinical practice that may affect the pharmacokinetics of drugs. The present study aims to determine the distribution pattern of UGT1A6 and UGT2B7 gene polymorphism and its possible impact on the metabolism of valproic acid (VPA) and carbamazepine (CBZ) in patients with epilepsy from Khyber Pakhtunkhwa region of Pakistan. METHODS After the enrollment of targeted patients, blood was collected for genotype analysis through Sanger sequencing. Plasma concentrations of VPA and CBZ were determined by reversed-phase high-performance liquid chromatography (HPLC) at the follow-up visit of third month from the initiation of therapy. The drug plasma levels were correlated with different genotypes of UGT1A6 and UGT2B7 to determine the impact of genetic polymorphism on the drug metabolism. RESULTS Of the total 178 epileptic patients, 120 subjects were prescribed VPA monotherapy while 58 subjects were given CBZ monotherapy. The mean age of the subjects was recorded as 26.1 ± 13.5 years with a predominance of the male gender. Generalized tonic-clonic (GTC) was the most prevalent type of seizure (82%) followed by partial seizure. Genotype analysis revealed that the frequency of homozygous and heterozygous variants of the targeted UGT genes were exceptionally high in the Khyber Pakhtunkhwa population compared to the ethnic groups of other countries. In UGT1A6-A552C and UGT1A6-A541G, AC and AG were the most prevalent genotypes with respective frequencies of 43.2% and 41.1% whereas, in UGT2B7-T161C and UGT2B7-G211T, TC and GG were the most prevalent genotypes with respective frequencies of 42.7% and 99.4%. In the VPA-treated group, the homozygous and heterozygous variants of UGT1A6-A552C and UGT1A6-A541G were significantly associated with lower drug plasma concentrations (p < 0.05). However, none of the genotypes of UGT2B7-T161C revealed any significant association with VPA plasma concentration (p greater than 0.05). In the CBZ-treated group, UGT gene polymorphisms were not recognized to cause alteration in the drug plasma concentrations (p greater than 0.05). CONCLUSION The genetic polymorphisms of UGT1A6, but not UGT2B7 significantly affected the plasma levels of valproic acid. The chosen SNPs did not reveal a role in determining the plasma levels of carbamazepine.
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Affiliation(s)
- Muhammad Saleh Faisal
- Department of Pharmacology, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Khyber Pakhtunkhwa, Pakistan; Department of Pharmacology, Khyber Medical College, Peshawar, Khyber Pakhtunkhwa, Pakistan.
| | - Ayesha Jamil
- Department of Pharmacology, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Khyber Pakhtunkhwa, Pakistan; Department of Pharmacology, Khyber Girls Medical College, Peshawar, Khyber Pakhtunkhwa, Pakistan.
| | - Niaz Ali
- Department of Pharmacology, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Khyber Pakhtunkhwa, Pakistan; Department of Pharmacology, College of Medicine, Shaqra University, Shaqra, Saudi Arabia.
| | | | - Feras Almarshad
- Department of Medicine, College of Medicine, Shaqra University, Shaqra, Saudi Arabia.
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Liao JM, Zhan Y, Zhang Z, Cui JJ, Yin JY. HLA-targeted sequencing reveals the pathogenic role of HLA-B*15:02/HLA-B*13:01 in albendazole-induced liver failure: a case report and a review of the literature. Front Pharmacol 2023; 14:1288068. [PMID: 38027017 PMCID: PMC10670799 DOI: 10.3389/fphar.2023.1288068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 10/27/2023] [Indexed: 12/01/2023] Open
Abstract
Drug-induced liver injury (DILI) is one of the serious adverse drug reactions (ADRs), which belongs to immune-mediated adverse drug reactions (IM-ADRs). As an essential health drug, albendazole has rarely been reported to cause serious liver damage. A young man in his 30 s developed severe jaundice, abnormal transaminases, and poor blood coagulation mechanism after taking albendazole, and eventually developed into severe liver failure. The patient was found heterozygous of HLA-B*15:02 and HLA-B*13:01 through HLA-targeted sequencing, which may have a pathogenic role in the disease. This case report summarizes his presentation, treatment, and prognosis. A useful summary of the diagnosis and associated genetic variant information is provided.
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Affiliation(s)
- Jin-Mao Liao
- Department of Hepotology, Hunan Provincial People’s Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, China
| | - Yan Zhan
- Department of Clinical Pharmacology, Hunan Key Laboratory of Pharmacogenetics, Xiangya Hospital, Central South University, Changsha, China
- Institute of Clinical Pharmacology, Central South University, Changsha, China
- Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Zheng Zhang
- Department of Hepotology, Hunan Provincial People’s Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, China
| | - Jia-Jia Cui
- Department of Clinical Pharmacology, Hunan Key Laboratory of Pharmacogenetics, Xiangya Hospital, Central South University, Changsha, China
- Institute of Clinical Pharmacology, Central South University, Changsha, China
- Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Department of Geriatric Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Ji-Ye Yin
- Department of Clinical Pharmacology, Hunan Key Laboratory of Pharmacogenetics, Xiangya Hospital, Central South University, Changsha, China
- Institute of Clinical Pharmacology, Central South University, Changsha, China
- Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
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Guin D, Hasija Y, Kukreti R. Assessment of clinically actionable pharmacogenetic markers to stratify anti-seizure medications. Pharmacogenomics J 2023; 23:149-160. [PMID: 37626111 DOI: 10.1038/s41397-023-00313-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 07/22/2023] [Accepted: 07/31/2023] [Indexed: 08/27/2023]
Abstract
Epilepsy treatment is challenging due to heterogeneous syndromes, different seizure types and higher inter-individual variability. Identification of genetic variants predicting drug efficacy, tolerability and risk of adverse-effects for anti-seizure medications (ASMs) is essential. Here, we assessed the clinical actionability of known genetic variants, based on their functional and clinical significance and estimated their diagnostic predictability. We performed a systematic PubMed search to identify articles with pharmacogenomic (PGx) information for forty known ASMs. Functional annotation of the identified genetic variants was performed using different in silico tools, and their clinical significance was assessed using the American College of Medical Genetics (ACMG) guidelines for variant pathogenicity, level of evidence (LOE) from PharmGKB and the United States-Food and drug administration (US- FDA) drug labelling with PGx information. Diagnostic predictability of the replicated genetic variants was evaluated by calculating their accuracy. A total of 270 articles were retrieved with PGx evidence associated with 19 ASMs including 178 variants across 93 genes, classifying 26 genetic variants as benign/ likely benign, fourteen as drug response markers and three as risk factors for drug response. Only seventeen of these were replicated, with accuracy (up to 95%) in predicting PGx outcomes specific to six ASMs. Eight out of seventeen variants have FDA-approved PGx drug labelling for clinical implementation. Therefore, the remaining nine variants promise for potential clinical actionability and can be improvised with additional experimental evidence for clinical utility.
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Affiliation(s)
- Debleena Guin
- Genomics and Molecular Medicine Unit, Council of Scientific and Industrial Research (CSIR)-Institute of Genomics and Integrative Biology (IGIB), New Delhi, 110007, India
- Department of Biotechnology, Delhi Technological University, Shahbad Daulatpur, Delhi, 110042, India
| | - Yasha Hasija
- Department of Biotechnology, Delhi Technological University, Shahbad Daulatpur, Delhi, 110042, India
| | - Ritushree Kukreti
- Genomics and Molecular Medicine Unit, Council of Scientific and Industrial Research (CSIR)-Institute of Genomics and Integrative Biology (IGIB), New Delhi, 110007, India.
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, 201002, India.
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Chang BL, Liu JR, Chang SH, See LC. Impact on carbamazepine usage and cutaneous adverse reactions before and after the reimbursement of HLA-B*1502 genotyping in Taiwan, 2000-2017: A nationwide longitudinal study. Epilepsia 2023; 64:2679-2689. [PMID: 37506179 DOI: 10.1111/epi.17726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/25/2023] [Accepted: 07/25/2023] [Indexed: 07/30/2023]
Abstract
OBJECTIVE The HLA-B*1502 allele is strongly associated with carbamazepine (CBZ)-induced Stevens-Johnson syndrome/toxic epidermal necrolysis (SJS/TEN) in the Han Chinese population. This study investigated the impact of HLA-B*1502 screening on CBZ utilization and rates of severe cutaneous allergic reactions (SCARs) and SJS/TEN over time in Taiwan, where screening for HLA-B*1502 genotyping before prescribing CBZ was reimbursed in June 2010. METHODS Using the Taiwan National Health Insurance Research Database, we analyzed 13 277 457 episodes of seeking treatment for epilepsy or neuralgia between 2000 and 2017. Episodes were categorized into quarters based on treatment time. Propensity score-based stabilized weighting (PSSW) ensured well-balanced covariates. The difference in 3-month SCAR and SJS/TEN rates between phase 2 (2011-2017) and phase 1 (2000-2009) was examined using a one-sample Z-test. Pearson correlation coefficients assessed the association between screening rate, the number of CBZ users and nonusers, and SCAR and SJS/TEN rates after HLA-B*1502 genotyping. RESULTS CBZ prescriptions reduced from 7% (2000-2003) to 6% (2004-2010) and 4% (2011-2017). The screening rates of CBZ nonusers and CBZ users increased from 0%, .5% in 2011 to .8%, 16% in 2017, respectively. After PSSW, the mean 3-month SCAR incidence rates (per 10 000 episodes) significantly decreased from phase 1 to phase 2 for CBZ users (6.91 vs. 3.09, p < .0001) and nonusers (1.96 vs. 1.65, p < .0001). SJS/TEN incidence rates (per 10 000 episodes) significantly decreased from phase 1 to phase 2 for CBZ users (2.94 vs. 1.93, p < .0001) but not for nonusers (.71 vs. .74, p = .1492). In phase 2, SCAR incidence rates were significantly and negatively correlated with the screening rate for both CBZ users (r = -.38, p = .0342) and nonusers (r = -.80, p < .001). No significant correlation was found between SJS/TEN incidence rates and screening rates. SIGNIFICANCE Recognizing HLA-B*1502 allele and avoiding CBZ therapy in HLA-B*1502-positive patients is critical for preventing CBZ-induced severe adverse events.
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Affiliation(s)
- Bao-Luen Chang
- Department of Neurology, Chang Gung Memorial Hospital at Linkou, Taoyuan City, Taiwan
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan City, Taiwan
- Neuroscience Research Center, Chang Gung Memorial Hospital at Linkou, Taoyuan City, Taiwan
| | - Jia-Rou Liu
- Department of Public Health, College of Medicine, Chang Gung University, Taoyuan City, Taiwan
| | - Shu-Hao Chang
- Department of Public Health, College of Medicine, Chang Gung University, Taoyuan City, Taiwan
| | - Lai-Chu See
- Department of Public Health, College of Medicine, Chang Gung University, Taoyuan City, Taiwan
- Biostatistics Core Laboratory, Molecular Medicine Research Center, Chang Gung University, Taoyuan City, Taiwan
- Division of Rheumatology, Allergy, and Immunology, Department of Internal Medicine, Chang Gung Memorial Hospital at Linkou, Taoyuan City, Taiwan
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Wahab A, Iqbal A. Black-Box Warnings of Antiseizure Medications: What is Inside the Box? Pharmaceut Med 2023; 37:233-250. [PMID: 37119452 DOI: 10.1007/s40290-023-00475-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/28/2023] [Indexed: 05/01/2023]
Abstract
Antiseizure medications can cause serious adverse reactions and have deleterious drug interactions that often complicate the clinical management of patients. When the US Food and Drug Administration (FDA) wants to alert healthcare providers and patients about the risk of potentially serious or fatal drug reactions, the FDA requires the manufacturers of these medications to format these warnings within a "black-box" border, and prominently display this box on the first section of the package insert; such warnings are called "black-box warnings (BBWs)". The BBW is a way for the FDA to urge physicians to evaluate patients more rigorously and carefully weigh the risks and benefits, before prescribing medication that has the potential to cause serious adverse reactions, and to formulate a plan for close monitoring during therapy. The FDA BBW provides the extra layer of safety but many healthcare providers fail to comply with these warnings. Currently, there are 26 FDA-approved antiseizure medications in the US market, 38% of which have received BBWs, and most of the antiseizure medications with BBWs are older-generation drugs. Some antiseizure medications have multiple BBWs; for example, valproic acid has three BBWs including hepatotoxicity, fetal risk, and pancreatitis, carbamazepine has BBWs of serious skin and hematological reactions, and felbamate also has two BBWs including hepatic failure and aplastic anemia. The purpose of this review is to provide insight into each BBW received by antiseizure medications and discuss the FDA recommendations for evaluating the drug benefit/risk, and for monitoring parameters before the initiation of and during treatment.
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Affiliation(s)
- Abdul Wahab
- Department of Pharmacy, Emory Healthcare, Emory Decatur Hospital, Decatur, GA, 30033, USA.
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Mushiroda T. Avoidance of cutaneous adverse drug reactions induced by antiepileptic drugs based on pharmacogenomics. J Hum Genet 2023; 68:227-230. [PMID: 35534674 DOI: 10.1038/s10038-022-01040-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 04/07/2022] [Accepted: 04/20/2022] [Indexed: 11/09/2022]
Abstract
Pharmacogenomics (PGx) is a research area aimed at identifying genetic factors that are associated with drug responses, including drug efficacy, adverse drug reactions, and the appropriate drug dosage on a case-to-case basis. To promote the clinical implementation of PGx testing, which is currently of limited use in clinical practice, recent research has focused on providing reliable evidence for its clinical utility. In neurology, psychiatry, and neurosurgery, several human leukocyte antigen (HLA) alleles have been reportedly associated with cutaneous adverse drug reactions (cADRs) induced by antiepileptic drugs, which significantly carry the risk of developing cADRs. Prior to using antiepileptic drugs such as carbamazepine and lamotrigine, which are prone to cause severe cADRs, preemptive HLA genetic testing and therapeutic interventions such as drug selection and dosage adjustment based on the results of the tests can reduce the incidence of cADRs in the population before the initiation of treatment.
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Affiliation(s)
- Taisei Mushiroda
- Laboratory for Pharmacogenomics, RIKEN Center for Integrative Medical Sciences, Yokohama, 230-0045, Japan.
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Bensken WP, Fernandez Baca Vaca G, Alberti PM, Khan OI, Ciesielski TH, Jobst BC, Williams SM, Stange KC, Sajatovic M, Koroukian SM. Racial and Ethnic Differences in Antiseizure Medications Among People With Epilepsy on Medicaid: A Case of Potential Inequities. Neurol Clin Pract 2023; 13:e200101. [PMID: 36865639 PMCID: PMC9973322 DOI: 10.1212/cpj.0000000000200101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 10/03/2022] [Indexed: 01/13/2023]
Abstract
Background and Objectives Being on a newer, second-, and third-generation antiseizure medication (ASM) may represent an important marker of quality of care for people with epilepsy. We sought to examine whether there were racial/ethnic differences in their use. Methods Using Medicaid claims data, we identified the type and number of ASMs, as well as the adherence, for people with epilepsy over a 5-year period (2010-2014). We used multilevel logistic regression models to examine the association between newer-generation ASMs and adherence. We then examined whether there were racial/ethnic differences in ASM use in models adjusted for demographics, utilization, year, and comorbidities. Results Among 78,534 adults with epilepsy, 17,729 were Black, and 9,376 were Hispanic. Overall, 25.6% were on older ASMs, and being solely on second-generation ASMs during the study period was associated with better adherence (adjusted odds ratio: 1.17, 95% confidence interval [CI]: 1.11-1.23). Those who saw a neurologist (3.26, 95% CI: 3.13-3.41) or who were newly diagnosed (1.29, 95% CI: 1.16-1.42) had higher odds of being on newer ASMs. Importantly, Black (0.71, 95% CI: 0.68-0.75), Hispanic (0.93, 95% CI: 0.88-0.99), and Native Hawaiian and Other Pacific Island individuals (0.77, 95% CI: 0.67-0.88) had lower odds of being on newer ASMs when compared with White individuals. Discussion Generally, racial and ethnic minoritized people with epilepsy have lower odds of being on newer-generation ASMs. Greater adherence by people who were only on newer ASMs, their greater use among people seeing a neurologist, and the opportunity of a new diagnosis point to actionable leverage points for reducing inequities in epilepsy care.
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Affiliation(s)
- Wyatt P Bensken
- Department of Population and Quantitative Health Sciences (WPB, THC, SMW, KCS, MS), School of Medicine, Case Western Reserve University, Cleveland, OH; Department of Neurology (GFBV), University Hospitals Cleveland Medical Center and School of Medicine, Case Western Reserve University, Cleveland, OH; AAMC Center for Health Justice (PMA), Association of American Medical Colleges, Washington, DC; Epilepsy Center of Excellence (OIK), Baltimore VA Medical Center, US Department of Veterans Affairs, MD; Department of Neurology and Geisel School of Medicine (BCJ), Dartmouth-Hitchcock Medical Center, Lebanon, NH; Center for Community Health Integration (KCS, MS), Department of Sociology, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland; and Departments of Neurology and Psychiatry (SMK), University Hospitals Cleveland Medical Center and School of Medicine, Case Western Reserve University, OH
| | - Guadalupe Fernandez Baca Vaca
- Department of Population and Quantitative Health Sciences (WPB, THC, SMW, KCS, MS), School of Medicine, Case Western Reserve University, Cleveland, OH; Department of Neurology (GFBV), University Hospitals Cleveland Medical Center and School of Medicine, Case Western Reserve University, Cleveland, OH; AAMC Center for Health Justice (PMA), Association of American Medical Colleges, Washington, DC; Epilepsy Center of Excellence (OIK), Baltimore VA Medical Center, US Department of Veterans Affairs, MD; Department of Neurology and Geisel School of Medicine (BCJ), Dartmouth-Hitchcock Medical Center, Lebanon, NH; Center for Community Health Integration (KCS, MS), Department of Sociology, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland; and Departments of Neurology and Psychiatry (SMK), University Hospitals Cleveland Medical Center and School of Medicine, Case Western Reserve University, OH
| | - Philip M Alberti
- Department of Population and Quantitative Health Sciences (WPB, THC, SMW, KCS, MS), School of Medicine, Case Western Reserve University, Cleveland, OH; Department of Neurology (GFBV), University Hospitals Cleveland Medical Center and School of Medicine, Case Western Reserve University, Cleveland, OH; AAMC Center for Health Justice (PMA), Association of American Medical Colleges, Washington, DC; Epilepsy Center of Excellence (OIK), Baltimore VA Medical Center, US Department of Veterans Affairs, MD; Department of Neurology and Geisel School of Medicine (BCJ), Dartmouth-Hitchcock Medical Center, Lebanon, NH; Center for Community Health Integration (KCS, MS), Department of Sociology, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland; and Departments of Neurology and Psychiatry (SMK), University Hospitals Cleveland Medical Center and School of Medicine, Case Western Reserve University, OH
| | - Omar I Khan
- Department of Population and Quantitative Health Sciences (WPB, THC, SMW, KCS, MS), School of Medicine, Case Western Reserve University, Cleveland, OH; Department of Neurology (GFBV), University Hospitals Cleveland Medical Center and School of Medicine, Case Western Reserve University, Cleveland, OH; AAMC Center for Health Justice (PMA), Association of American Medical Colleges, Washington, DC; Epilepsy Center of Excellence (OIK), Baltimore VA Medical Center, US Department of Veterans Affairs, MD; Department of Neurology and Geisel School of Medicine (BCJ), Dartmouth-Hitchcock Medical Center, Lebanon, NH; Center for Community Health Integration (KCS, MS), Department of Sociology, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland; and Departments of Neurology and Psychiatry (SMK), University Hospitals Cleveland Medical Center and School of Medicine, Case Western Reserve University, OH
| | - Timothy H Ciesielski
- Department of Population and Quantitative Health Sciences (WPB, THC, SMW, KCS, MS), School of Medicine, Case Western Reserve University, Cleveland, OH; Department of Neurology (GFBV), University Hospitals Cleveland Medical Center and School of Medicine, Case Western Reserve University, Cleveland, OH; AAMC Center for Health Justice (PMA), Association of American Medical Colleges, Washington, DC; Epilepsy Center of Excellence (OIK), Baltimore VA Medical Center, US Department of Veterans Affairs, MD; Department of Neurology and Geisel School of Medicine (BCJ), Dartmouth-Hitchcock Medical Center, Lebanon, NH; Center for Community Health Integration (KCS, MS), Department of Sociology, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland; and Departments of Neurology and Psychiatry (SMK), University Hospitals Cleveland Medical Center and School of Medicine, Case Western Reserve University, OH
| | - Barbara C Jobst
- Department of Population and Quantitative Health Sciences (WPB, THC, SMW, KCS, MS), School of Medicine, Case Western Reserve University, Cleveland, OH; Department of Neurology (GFBV), University Hospitals Cleveland Medical Center and School of Medicine, Case Western Reserve University, Cleveland, OH; AAMC Center for Health Justice (PMA), Association of American Medical Colleges, Washington, DC; Epilepsy Center of Excellence (OIK), Baltimore VA Medical Center, US Department of Veterans Affairs, MD; Department of Neurology and Geisel School of Medicine (BCJ), Dartmouth-Hitchcock Medical Center, Lebanon, NH; Center for Community Health Integration (KCS, MS), Department of Sociology, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland; and Departments of Neurology and Psychiatry (SMK), University Hospitals Cleveland Medical Center and School of Medicine, Case Western Reserve University, OH
| | - Scott M Williams
- Department of Population and Quantitative Health Sciences (WPB, THC, SMW, KCS, MS), School of Medicine, Case Western Reserve University, Cleveland, OH; Department of Neurology (GFBV), University Hospitals Cleveland Medical Center and School of Medicine, Case Western Reserve University, Cleveland, OH; AAMC Center for Health Justice (PMA), Association of American Medical Colleges, Washington, DC; Epilepsy Center of Excellence (OIK), Baltimore VA Medical Center, US Department of Veterans Affairs, MD; Department of Neurology and Geisel School of Medicine (BCJ), Dartmouth-Hitchcock Medical Center, Lebanon, NH; Center for Community Health Integration (KCS, MS), Department of Sociology, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland; and Departments of Neurology and Psychiatry (SMK), University Hospitals Cleveland Medical Center and School of Medicine, Case Western Reserve University, OH
| | - Kurt C Stange
- Department of Population and Quantitative Health Sciences (WPB, THC, SMW, KCS, MS), School of Medicine, Case Western Reserve University, Cleveland, OH; Department of Neurology (GFBV), University Hospitals Cleveland Medical Center and School of Medicine, Case Western Reserve University, Cleveland, OH; AAMC Center for Health Justice (PMA), Association of American Medical Colleges, Washington, DC; Epilepsy Center of Excellence (OIK), Baltimore VA Medical Center, US Department of Veterans Affairs, MD; Department of Neurology and Geisel School of Medicine (BCJ), Dartmouth-Hitchcock Medical Center, Lebanon, NH; Center for Community Health Integration (KCS, MS), Department of Sociology, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland; and Departments of Neurology and Psychiatry (SMK), University Hospitals Cleveland Medical Center and School of Medicine, Case Western Reserve University, OH
| | - Martha Sajatovic
- Department of Population and Quantitative Health Sciences (WPB, THC, SMW, KCS, MS), School of Medicine, Case Western Reserve University, Cleveland, OH; Department of Neurology (GFBV), University Hospitals Cleveland Medical Center and School of Medicine, Case Western Reserve University, Cleveland, OH; AAMC Center for Health Justice (PMA), Association of American Medical Colleges, Washington, DC; Epilepsy Center of Excellence (OIK), Baltimore VA Medical Center, US Department of Veterans Affairs, MD; Department of Neurology and Geisel School of Medicine (BCJ), Dartmouth-Hitchcock Medical Center, Lebanon, NH; Center for Community Health Integration (KCS, MS), Department of Sociology, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland; and Departments of Neurology and Psychiatry (SMK), University Hospitals Cleveland Medical Center and School of Medicine, Case Western Reserve University, OH
| | - Siran M Koroukian
- Department of Population and Quantitative Health Sciences (WPB, THC, SMW, KCS, MS), School of Medicine, Case Western Reserve University, Cleveland, OH; Department of Neurology (GFBV), University Hospitals Cleveland Medical Center and School of Medicine, Case Western Reserve University, Cleveland, OH; AAMC Center for Health Justice (PMA), Association of American Medical Colleges, Washington, DC; Epilepsy Center of Excellence (OIK), Baltimore VA Medical Center, US Department of Veterans Affairs, MD; Department of Neurology and Geisel School of Medicine (BCJ), Dartmouth-Hitchcock Medical Center, Lebanon, NH; Center for Community Health Integration (KCS, MS), Department of Sociology, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland; and Departments of Neurology and Psychiatry (SMK), University Hospitals Cleveland Medical Center and School of Medicine, Case Western Reserve University, OH
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Chu MT, Chang WC, Pao SC, Hung SI. Delayed Drug Hypersensitivity Reactions: Molecular Recognition, Genetic Susceptibility, and Immune Mediators. Biomedicines 2023; 11:biomedicines11010177. [PMID: 36672685 PMCID: PMC9855900 DOI: 10.3390/biomedicines11010177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 12/29/2022] [Accepted: 01/05/2023] [Indexed: 01/12/2023] Open
Abstract
Drug hypersensitivity reactions are classified into immediate and delayed types, according to the onset time. In contrast to the immediate type, delayed drug hypersensitivity mainly involves T lymphocyte recognition of the drug antigens and cell activation. The clinical presentations of such hypersensitivity are various and range from mild reactions (e.g., maculopapular exanthema (MPE) and fixed drug eruption (FDE)), to drug-induced liver injury (DILI) and severe cutaneous adverse reactions (SCARs) (e.g., Stevens-Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), drug reaction with eosinophilia and systemic symptoms (DRESS), and acute generalized exanthematous pustulosis (AGEP)). The common culprits of delayed drug hypersensitivity include anti-epileptics, antibiotics, anti-gout agents, anti-viral drugs, etc. Delayed drug hypersensitivity is proposed to be initiated by different models of molecular recognition, composed of drug/metabolite antigen and endogenous peptide, HLA presentation, and T cell receptor (TCR) interaction. Increasing the genetic variants of HLA loci and drug metabolic enzymes has been identified to be responsible for delayed drug hypersensitivity. Furthermore, preferential TCR clonotypes, and the activation of cytotoxic proteins/cytokines/chemokines, are also involved in the pathogenesis of delayed drug hypersensitivity. This review provides a summary of the current understanding of the molecular recognition, genetic susceptibility, and immune mediators of delayed drug hypersensitivity.
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Affiliation(s)
- Mu-Tzu Chu
- Cancer Vaccine & Immune Cell Therapy Core Lab, Department of Medical Research, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
| | - Wan-Chun Chang
- Division of Translational Therapeutics, Department of Paediatrics, Faculty of Medicine, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Shih-Cheng Pao
- Cancer Vaccine & Immune Cell Therapy Core Lab, Department of Medical Research, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
- Institute of Pharmacology, School of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Shuen-Iu Hung
- Cancer Vaccine & Immune Cell Therapy Core Lab, Department of Medical Research, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
- Institute of Pharmacology, School of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
- Drug Hypersensitivity Clinical and Research Center, Department of Dermatology, Chang Gung Memorial Hospital, Linkou 333, Taiwan
- Correspondence: or ; Tel.: +886-3-3281200 (ext. 7806)
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Kosloski MP, Li H, Wang S, Mensa F, Kort J, Liu W. Characterizing complex and competing drug-drug interactions between the antiviral regimen of glecaprevir and pibrentasvir with rifampin or carbamazepine. Clin Transl Sci 2023; 16:593-605. [PMID: 36597378 PMCID: PMC10087067 DOI: 10.1111/cts.13471] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 12/12/2022] [Accepted: 12/16/2022] [Indexed: 01/05/2023] Open
Abstract
The fixed-dose combination of the direct acting antivirals glecaprevir (GLE) and pibrentasvir (PIB) is an oral, once-daily treatment for all six major genotypes of chronic hepatitis C virus infection. A single and multiple-dose rifampin study (N = 12) and a carbamazepine study (N = 12) were conducted in healthy subjects to evaluate the effects of CYP3A/P-gp induction and OATP inhibition on the pharmacokinetics of GLE and PIB. In study 1, GLE 300 mg + PIB 120 mg was administered as a single dose either alone, after single and multiple daily doses of rifampin 600 mg, or 24 h after the last rifampin dose. In study 2, GLE 300 mg + PIB 120 mg was administered as a single dose either alone or after multiple doses of carbamazepine 200 mg. Relative to GLE + PIB alone, exposure of GLE was significantly increased by the first co-administered rifampin dose due to OATP inhibition, significantly decreased 24 h after the last rifampin dose due to CYP3A/P-gp induction, and slightly increased when co-administered with steady-state rifampin due to a combination of inhibition and induction forces. Exposure of PIB was not affected when co-administered with the first rifampin dose but was significantly decreased with steady-state rifampin co-administration, or 24 h after the last rifampin dose due to P-gp induction. Carbamazepine significantly decreased GLE and PIB exposure, mainly attributed to P-gp induction. The regimens tested were generally well-tolerated by the subjects and no new safety issues were identified.
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Affiliation(s)
| | - Hong Li
- Data and Statistical Sciences, AbbVie Inc., North Chicago, Illinois, USA
| | - Stanley Wang
- Infectious Disease, AbbVie Inc., North Chicago, Illinois, USA
| | - Federico Mensa
- Infectious Disease, AbbVie Inc., North Chicago, Illinois, USA
| | - Jens Kort
- Medical Affairs, AbbVie Inc., North Chicago, Illinois, USA
| | - Wei Liu
- Clinical Pharmacology, AbbVie Inc., North Chicago, Illinois, USA
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Thomson P, Hammond S, Naisbitt DJ. Pathology of drug hypersensitivity reactions and mechanisms of immune tolerance. Clin Exp Allergy 2022; 52:1379-1390. [PMID: 36177544 DOI: 10.1111/cea.14235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 09/08/2022] [Accepted: 09/25/2022] [Indexed: 01/26/2023]
Abstract
Immune-mediated type IV adverse drug reactions are idiosyncratic in nature, generally not related to the primary or secondary pharmacology of the drug. Due to their complex nature and rarity, these iatrogenic reactions are seldom predicted or encountered during preclinical/early clinical development stages, and often precipitate upon exposure to wider populations (i.e. phase III onwards). They confer a burden on the healthcare sector in both a clinical and financial sense presenting a severe impediment to the drug discovery and development process. Research over the past 50 years has improved our understanding of these reactions markedly as both in vitro and in vivo studies have placed the role of the immune system, in particular; drug-responsive T cells, firmly in the spotlight as the mediators of these reactions. Indeed, the role of different populations of T cells in adverse events and the interaction of drug molecules with HLA proteins expressed on the surface of antigen-presenting cells is of considerable interest. Herein, this review examines the pathways of immune-mediated adverse events including the various T cell subtypes implicated and the mechanisms of T cell activation. Additionally, we address the enigma of immunological tolerance and explore the role tolerance plays in determination of susceptibility to such adverse events even in individuals carrying immunogenic liabilities.
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Affiliation(s)
- Paul Thomson
- Department of Molecular and Clinical Pharmacology, MRC Centre for Drug Safety Science, University of Liverpool, Liverpool, UK
| | - Sean Hammond
- Department of Molecular and Clinical Pharmacology, MRC Centre for Drug Safety Science, University of Liverpool, Liverpool, UK.,ApconiX, Alderley Park, Alderley Edge, UK
| | - Dean J Naisbitt
- Department of Molecular and Clinical Pharmacology, MRC Centre for Drug Safety Science, University of Liverpool, Liverpool, UK
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11
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Manson LEN, Chan PCY, Böhringer S, Guchelaar HJ. Genotyping for HLA risk alleles versus patch tests to diagnose anti-seizure medication induced cutaneous adverse drug reactions. Front Pharmacol 2022; 13:1061419. [DOI: 10.3389/fphar.2022.1061419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 11/08/2022] [Indexed: 11/22/2022] Open
Abstract
Aim: To provide a comparison of genotyping for HLA risk alleles versus patch testing to determine which of these two tests is a better diagnostic tool for cutaneous hypersensitivity reactions caused by anti-seizure medication.Methods: A literature study was performed in PubMed to assess the sensitivity and specificity of HLA genotyping and patch tests for identifying anti-seizure medication induced cutaneous hypersensitivity reactions.Results: This study shows that HLA-B*15:02 genotyping shows high sensitivity for carbamazepine-induced SJS/TEN, especially in Han Chinese and Southeast Asian patients (66.7–100.0%) whereas the sensitivity of patch tests (0.0–62,5%), HLA-A*31:01 (0–50%) and HLA-B*15:11 (18.2–42.9%) are lower. On the contrary, for carbamazepine and phenytoin induced DRESS, patch tests (respectively 70.0–88.9% and 14.3–70.0%) show higher sensitivity than HLA tests (0–66.7% and 0–12.7%). Also for lamotrigine-induced DRESS patch tests perform better than HLA-B*15:02 (33.3–40.0 versus 0%). For anti-seizure medication induced MPE and for oxcarbazepine-induced SCARs more studies are needed.Conclusion: Use of HLA-B genotyping may aid clinicians in the diagnosis of carbamazepine, phenytoin, lamotrigine and oxcarbazepine induced SJS/TEN, particularly in Han Chinese and Southeast Asian patients. On the other hand, patch tests seem to perform better in the diagnosis of carbamazepine and phenytoin induced DRESS.
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12
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Chomean S, Nakkam N, Tassaneeyakul W, Attapong J, Kaset C. Development of label-free electrochemical impedance spectroscopy for the detection of HLA-B*15:02 and HLA-B*15:21 for the prevention of carbamazepine-induced Stevens-Johnson syndrome. Anal Biochem 2022; 658:114931. [PMID: 36191668 DOI: 10.1016/j.ab.2022.114931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/20/2022] [Accepted: 09/23/2022] [Indexed: 11/01/2022]
Abstract
BACKGROUND Carbamazepine (CBZ) is an FDA-approved anticonvulsant that is widely used to treat epilepsy, bipolar disorder, trigeminal neuralgia and chronic pain. Several studies have reported a strong association between HLA-B*15:02 and carbamazepine-induced Stevens-Johnson syndrome (SJS) or toxic epidermal necrolysis (TEN). However, the HLA-B75 serotype (HLA-B*15:02, HLA-B*15:08, HLA-B*15:11 and HLA-B*15:21) has been found in patients with carbamazepine-induced SJS/TEN. METHODS This study aimed to develop label-free electrochemical impedance spectroscopy (EIS) for the detection of HLA-B*15:02 and HLA-B*15:21 after PCR-SSP amplification. A total of 208 DNA samples were tested. The impedance was measured and compared to standard gel electrophoresis. RESULTS The developed label-free EIS identified HLA-B*15:02 and HLA-B*15:21 alleles with 100% sensitivity (95% CI: 86.773%-100.000%) and 95.05% specificity (95% CI: 90.821%-97.714%), comparable to commercial DMSc 15:02 detection kits. CONCLUSIONS We successfully developed a novel PCR-SSP associated with signal impedance changes to detect the HLA-B*15:02 allele and HLA-B*15:21 without downstream amplicon size analysis that is suitable for screening individuals before indication of CBZ therapy.
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Affiliation(s)
- Sirinart Chomean
- Department of Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Pathumthani, Thailand; Thammasat University Research Unit in Medical Technology and Precision Medicine Innovation, Thailand
| | - Nontaya Nakkam
- Department of Pharmacology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | | | - Jirapat Attapong
- Department of Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Pathumthani, Thailand; Thammasat University Research Unit in Medical Technology and Precision Medicine Innovation, Thailand
| | - Chollanot Kaset
- Department of Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Pathumthani, Thailand; Thammasat University Research Unit in Medical Technology and Precision Medicine Innovation, Thailand.
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13
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Xi P, Wang H, Zhong Z, Liu S, Tang J, Guo C, Dai P. rs144012689 is a highly specific representative marker of HLA-B*15:02 in the Chinese population. Pharmacogenomics 2022; 23:835-845. [PMID: 36169168 DOI: 10.2217/pgs-2022-0075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Objective: To develop an accurate and rapid real-time PCR technique for HLA-B*15:02 genotyping and investigate HLA-B*15:02 allele frequency in four ethnic populations in China. Materials & methods: Based on the highly specific representative markers, a real-time PCR assay was developed for HLA-B*15:02 genotyping, and HLA-B*15:02 allele frequencies were screened in four ethnic populations of China. Sequence-based typing was used to validate the accuracy of the assay. Results: The sensitivity and specificity of the assay were 100%, and the detection limit was 0.2 ng. The frequency of HLA-B*15:02 alleles distributed in the Bouyei population was significantly higher than in the Han group (p < 0.01). Neither the Tibetan nor the Uyghur population carried the HLA-B*15:02 haplotype. Conclusion: The authors developed an accurate HLA-B*15:02 genotyping method for evaluating the risk of adverse drug reactions induced by carbamazepine in various ethnic populations in China.
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Affiliation(s)
- Pei Xi
- National Engineering Research Center for Miniaturized Detection Systems, College of Life Science, Northwest University of Xi'an, Shaanxi Province, 710069, China.,Shaanxi Lifegen Co.,Ltd, Building 1, Collaborative Innovation Port, Fengdong New City, Xixian New Area, Xi'an, Shaanxi Province, 712000, China
| | - Hao Wang
- National Engineering Research Center for Miniaturized Detection Systems, College of Life Science, Northwest University of Xi'an, Shaanxi Province, 710069, China
| | - Zihua Zhong
- National Engineering Research Center for Miniaturized Detection Systems, College of Life Science, Northwest University of Xi'an, Shaanxi Province, 710069, China
| | - Shihui Liu
- National Engineering Research Center for Miniaturized Detection Systems, College of Life Science, Northwest University of Xi'an, Shaanxi Province, 710069, China
| | - Jiaxuan Tang
- National Engineering Research Center for Miniaturized Detection Systems, College of Life Science, Northwest University of Xi'an, Shaanxi Province, 710069, China
| | - Chunli Guo
- Pulmonary and Critical Care Medicine, Tongchuan People's Hospital, Tongchuan, Shaanxi Province, People's Republic of China
| | - Penggai Dai
- National Engineering Research Center for Miniaturized Detection Systems, College of Life Science, Northwest University of Xi'an, Shaanxi Province, 710069, China.,Shaanxi Lifegen Co.,Ltd, Building 1, Collaborative Innovation Port, Fengdong New City, Xixian New Area, Xi'an, Shaanxi Province, 712000, China
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14
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Rashid M, Rajan AK, Chhabra M, Kashyap A, Chandran VP, Venkataraman R, Nair S, Thunga G. Role of human leukocyte antigen in anti-epileptic drugs-induced Stevens-Johnson Syndrome/toxic epidermal necrolysis: A meta-analysis. Seizure 2022; 102:36-50. [PMID: 36183454 DOI: 10.1016/j.seizure.2022.09.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 09/14/2022] [Accepted: 09/15/2022] [Indexed: 10/31/2022] Open
Abstract
PURPOSE Antiepileptic drugs (AEDs) are extensively used to manage epilepsy and other comorbidities associated with seizures. Human Leukocyte Antigen (HLA) has a strong association with AED-induced severe cutaneous adverse drug reactions. OBJECTIVE We aimed to perform a systematic review and meta-analysis to identify, critically evaluate, and synthesize the best possible evidence on HLA-associated AED-induced Stevens-Johnson Syndrome/Toxic Epidermal Necrolysis (SJS/TEN). METHODS MEDLINE/PubMed, Scopus, and the Cochrane Library were searched for literature from inception up to July 2022. We included case control studies analyzing association between HLA and AED-induced SJS/TEN. We assessed the studies' risk of bias in using Quality of genetic studies (Q-genie) tool. Outcomes focused on association (risk) between HLA and AED-induced SJS/TEN. The estimated risk was presented in the form of odds ratio (OR). RESULTS We included 37 studies (51,422 participants; 7027 cases and 44,395 controls). There was a significantly higher risk of Carbamazepine-induced SJS/TEN with HLA-A (OR: 1.50; 95% CI: 1.03 to 2.17), HLA-B (OR: 1.94; 95% CI: 1.45 to 2.58), HLA-C (OR: 7.83; 95% CI: 4.72 to 12.98), and HLA-DRB1 (OR: 2.82; 95% CI: 1.94 to 4.12). Lamotrigine-induced SJS/TEN posed a higher risk with HLA-A (OR: 2.38; 95% CI: 1.26 to 4.46) and HLA-B (OR: 2.79; 95% CI: 1.75 to 4.46). Phenytoin-induced SJS/TEN showed a higher risk with HLA-A (OR: 3.47; 95% CI: 2.17 to 5.56), HLA-B (OR: 1.72; 95% CI: 1.38 to 2.15), and HLA-C (OR: 2.92; 95% CI: 1.77 to 4.83). Phenobarbital-induced SJS/TEN had a higher risk with HLA-A (OR: 6.98; 95% CI: 1.81 to 26.84), HLA-B (OR: 2.40; 95% CI: 1.39 to 4.17), and HLA-C (OR: 3.37; 95% CI: 1.03 to 11.01). Zonisamide-induced SJS/TEN was significantly associated with HLA-A*02:07 (OR: 9.77; 95% CI: 3.07 to 31.1), HLA-B*46:01 (OR: 6.73; 95% CI: 2.12 to 21.36), and HLA-DRB1×08:03 (OR: 3.78; 95% CI: 1.20 to 11.97). All other alleles of HLA were observed to have a non-significant association with AED-induced SJS/TEN. All included studies were of good quality, with a score of >50 and a mean score of 54.96 out of 77. CONCLUSION Our study showed a significant association between few variants of HLA alleles and AED-induced SJS/TEN. Evidences from our study could help in population-based studies and in implementation of individualized treatment regimens. These findings could be part of translational research helping in precision therapy.
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Affiliation(s)
- Muhammed Rashid
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Asha K Rajan
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Manik Chhabra
- Department of Pharmacology and Therapeutics, Max Rady College of Medicine, University of Manitoba, Winnipeg, Canada
| | - Ananth Kashyap
- Department of Pharmacy Practice, Sarada Vilas College of Pharmacy, Mysuru, Karnataka, India
| | - Viji Pulikkel Chandran
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Rajesh Venkataraman
- Department of Pharmacy Practice, Sri Adichunchanagari College of Pharmacy, Adichunchanagari University, BG Nagara, Karnataka, India
| | - Sreedharan Nair
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Girish Thunga
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India; Coordinator, Centre for Toxicovigilance and Drug Safety, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India.
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15
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Masmoudi HC, Afify N, Alnaqbi H, Alhalwachi Z, Tay GK, Alsafar H. HLA pharmacogenetic markers of drug hypersensitivity from the perspective of the populations of the Greater Middle East. Pharmacogenomics 2022; 23:695-708. [PMID: 35971864 DOI: 10.2217/pgs-2022-0078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Specific HLA associations with drug hypersensitivity may vary between geographic regions and ethnic groups. There are little to no data related to HLA-drug hypersensitivity on populations who reside in the Greater Middle East (GME), a vast region spanning from Morocco in the west to Pakistan in the east. In this review, the authors intended to summarize the significant HLA alleles associated with hypersensitive drug reactions induced by different drugs, as have been found in different populations, and to summarize the prevalence of these alleles in the specific and diverse populations of the GME. For example, HLA-B*57:01 allele prevalence, associated with abacavir-induced hypersensitivity, ranges from 1% to 3%, and HLA-DPB1*03:01 prevalence, associated with aspirin-induced asthma, ranges from 10% to 14% in the GME population. Studying pharmacogenomic associations in the ethnic groups of the GME may allow the discovery of new associations, confirm ones found with a low evidence rate and enable cost-effectiveness analysis of allele screening before drug use.
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Affiliation(s)
- Hend Chaker Masmoudi
- Center for Biotechnology, Khalifa University of Science & Technology, Abu Dhabi, United Arab Emirates.,Pharmaceutical Sciences Department, Faculty of Pharmacy of Monastir, Monastir, 5000, Tunisia.,Department of Histology & Cytogenetics, Institute Pasteur de Tunis, Tunis, 1002, Tunisia
| | - Nariman Afify
- College of Medicine & Health Sciences, Khalifa University of Science & Technology, Abu Dhabi, P.O. Box 127788, United Arab Emirates
| | - Halima Alnaqbi
- Center for Biotechnology, Khalifa University of Science & Technology, Abu Dhabi, United Arab Emirates.,Department of Biomedical Engineering, Khalifa University of Science & Technology, Abu Dhabi, P.O. Box 127788, United Arab Emirates
| | - Zainab Alhalwachi
- Center for Biotechnology, Khalifa University of Science & Technology, Abu Dhabi, United Arab Emirates
| | - Guan K Tay
- Center for Biotechnology, Khalifa University of Science & Technology, Abu Dhabi, United Arab Emirates.,Faculty of Health & Medical Sciences, UWA Medical School, University of Western Australia, Perth, 6009, Western Australia.,School of Medical & Health Sciences, Edith Cowan University, Joondalup, 6027, Western Australia
| | - Habiba Alsafar
- Center for Biotechnology, Khalifa University of Science & Technology, Abu Dhabi, United Arab Emirates.,College of Medicine & Health Sciences, Khalifa University of Science & Technology, Abu Dhabi, P.O. Box 127788, United Arab Emirates.,Department of Biomedical Engineering, Khalifa University of Science & Technology, Abu Dhabi, P.O. Box 127788, United Arab Emirates
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16
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Min F, Fan C, Zeng Y, He N, Zeng T, Qin B, Shi Y. Carbamazepine-modified HLA-A*24:02-bound peptidome: Implication of CORO1A in skin rash. Int Immunopharmacol 2022; 109:108804. [DOI: 10.1016/j.intimp.2022.108804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 04/01/2022] [Accepted: 04/24/2022] [Indexed: 11/05/2022]
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17
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Elzagallaai AA, Rieder MJ. Genetic markers of drug hypersensitivity in pediatrics: current state and promise. Expert Rev Clin Pharmacol 2022; 15:715-728. [DOI: 10.1080/17512433.2022.2100345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Abdelbaset A Elzagallaai
- Department of Paediatrics Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
- Department of Physiology and Pharmacology Schulich School of Medicine and Dentistry, Western University, London, ON, Canada
| | - Michael J Rieder
- Department of Physiology and Pharmacology Schulich School of Medicine and Dentistry, Western University, London, ON, Canada
- Robarts Research Institute, Western University, London, Ontario, Canada
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18
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Biswas M, Ershadian M, Shobana J, Nguyen A, Sukasem C. Associations of
HLA
genetic variants with carbamazepine‐induced cutaneous adverse drug reactions: An updated meta‐analysis. Clin Transl Sci 2022; 15:1887-1905. [PMID: 35599240 PMCID: PMC9372413 DOI: 10.1111/cts.13291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 03/28/2022] [Accepted: 04/07/2022] [Indexed: 11/12/2022] Open
Abstract
Aggregated risk of carbamazepine (CBZ)‐induced cutaneous adverse drug reactions (cADRs) with different HLA variants are unclear and limited in terms of the power of studies. This study aimed to assess the aggregated risk of CBZ‐induced cADRs associated with carrying the following HLA variants: HLA‐B*15:02, HLA‐B*15:11, HLA‐B*15:21, HLA‐B*38:02, HLA‐B*40:01, HLA‐B*46:01, HLA‐B*58:01, HLA‐A*24:02, and HLA‐A*31:01. Literature was searched in different databases following PRISMA guidelines. The outcomes were measured as odds ratio (OR) using RevMan software by a random/fixed effects model, where p < 0.05 was set as statistical significance. In total, 46 case–control studies met the inclusion criteria and were included in this analysis consisting of 1817 cases and 6614 controls. It was found that case‐patients who carried the HLA‐B*15:02 allele were associated with a significantly increased risk of CBZ‐induced Stevens−Johnson syndrome/toxic epidermal necrolysis (SJS/TEN) compared to controls (OR 26.01; 95% CI 15.88–42.60; p < 0.00001). The aggregated risk of cADRs was slightly higher in Asian compared to Caucasian patients (Asians: OR 14.84; 95% CI 8.95–24.61; p < 0.00001; Caucasians: OR 11.65; 95% CI 1.68–80.70; p = 0.01). Further, HLA‐B*15:11, HLA‐B*15:21, or HLA‐A*31:01 allele was also associated with significantly increased risk of CBZ‐induced cADRs (HLA‐B*15:11: OR 6.08; 95% CI 2.28–16.23; p = 0.0003; HLA‐B*15:21: OR 5.37; 95% CI 2.02–14.28; p = 0.0008; HLA‐A*31:01: OR 5.92; 95% CI 4.35–8.05; p < 0.00001). Other HLA variants were not found to have any significant associations with CBZ‐induced cADRs. Strong associations between the HLA‐B*15:02, HLA‐B*15:11, HLA‐B*15:21, or HLA‐A*31:01 allele with CBZ‐induced cADRs have been established in this analysis. Pharmacogenetic testing of particular HLA alleles before initiation of CBZ therapy may be beneficial to patients and may help to eradicate cADRs substantially.
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Affiliation(s)
- Mohitosh Biswas
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology Faculty of Medicine Ramathibodi Hospital, Mahidol University Bangkok Thailand
- Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC) Ramathibodi Hospital Bangkok Thailand
- Department of Pharmacy University of Rajshahi Rajshahi Bangladesh
| | - Maliheh Ershadian
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology Faculty of Medicine Ramathibodi Hospital, Mahidol University Bangkok Thailand
- Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC) Ramathibodi Hospital Bangkok Thailand
| | - John Shobana
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology Faculty of Medicine Ramathibodi Hospital, Mahidol University Bangkok Thailand
- Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC) Ramathibodi Hospital Bangkok Thailand
| | - Ai‐Hoc Nguyen
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology Faculty of Medicine Ramathibodi Hospital, Mahidol University Bangkok Thailand
- Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC) Ramathibodi Hospital Bangkok Thailand
| | - Chonlaphat Sukasem
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology Faculty of Medicine Ramathibodi Hospital, Mahidol University Bangkok Thailand
- Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC) Ramathibodi Hospital Bangkok Thailand
- Pharmacogenomics and Precision Medicine, The Preventive Genomics & Family Check‐up Services Center Bumrungrad International Hospital Bangkok Thailand
- Department of Pharmacology and Therapeutics, MRC Centre for Drug Safety Science, Institute of Systems, Molecular and Integrative Biology University of Liverpool Liverpool UK
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Chen CB, Wang CW, Chung WH. Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis in the Era of Systems Medicine. Methods Mol Biol 2022; 2486:37-54. [PMID: 35437717 DOI: 10.1007/978-1-0716-2265-0_3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Stevens-Johnson syndrome and toxic epidermal necrolysis (SJS/TEN) are severe mucocutaneous bullous disorders characterized by widespread skin and mucosal necrosis and detachment, which are most commonly triggered by medications. Despite their rarity, these severe cutaneous adverse drug reactions will result in high mortality and morbidity as well as long-term sequela. The immunopathologic mechanisms is mainly cell-mediated cytotoxic reaction against keratinocytes leading to massive skin necrolysis. Subsequent studies have demonstrated that immune synapse composed of cytotoxic T cells with drug-specific human leukocyte antigen (HLA) class I restriction and T cell receptors (TCR) repertoire is the key pathogenic for SJS/TEN. Various cytotoxic proteins and cytokines such as soluble granulysin, perforin, granzyme B, interleukin-15, Fas ligand, interferon-γ, tumor necrosis factor-α have been as mediators involved in the pathogenesis of SJS/TEN. Early recognition and immediate withdrawal of causative agents, and critical multidisciplinary supportive care are key management of SJS/TEN. To date, there is yet to be a sufficient consensus or recommendation for the immunomodulants of the treatment in SJS/TEN. Systemic corticosteroids remain one of the most common treatment options for SJS/TEN, though the efficacy remain uncertain. Currently, there is increasing evidence showing that cyclosporine and TNF-α inhibitors decrease the mortality of SJS/TEN. Further multicenter double-blinded, randomized, placebo-controlled trials are required to confirm the efficacy and safety.
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21
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Tran TH, Lan PT, Khang TH, Luong VH. Systemic Corticosteroid Therapy for Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis in Vietnam: Clinical Evaluation and Analysis of Serum Cytokines. Open Access Maced J Med Sci 2022. [DOI: 10.3889/oamjms.2022.8052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Abstract
BACKGROUND: Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis are severe cutaneous adverse drug reactions. There are some immunological and genetic factors which are believed to be involved in the pathogenesis of SJS/TEN. The treatment of SJS/TEN is still controversial in which several studies showed variable results.
AIMS: To evaluate clinically the efficacy of systemic corticosteroid and to analyze some related cytokines in the treatment of SJS/TEN.
METHODS: This open, pilot and uncontrolled study was conducted at National Hospital of Dermatology and Venereology, in Hanoi, Vietnam, from October 2017 to September 2019. Methylprednisolone was indicated from the first day of hospitalization with the dose of 0.5-2.5 mg/kg/day (calculated according to prednisolone dose) once daily. It was continued until the patients got re-epithelialization. The efficacy of methylprednisolone was evaluated by observing clinically and analyzing related cytokines before and after the treatment.
RESULTS: The mean time of re-epithelialization was 15.9 days, of hospitalization was 15.9 days (range 5-30 days). There was no in-hospital mortality in this study. The most common complication was transient glycaemia (40.6%), there was no patient with sepsis. At the day of hospitalization, serum concentrations of TNF-α, IFN-γ, IL-2, IL-5, IL-13 and IL-10 were significantly higher than those at the day of re-epithelialization (p<0.05). Serum levels of IL-4, did not have significant differences between two time points (p>0.05).
CONCLUSION: The systemic corticosteroid is a good choice in the treatment of SJS/TEN. It can reduce serum levels of some cytokines that help SJS/TEN patients with avoiding mortality.
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22
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Moyer AM, Gandhi MJ. Human Leukocyte Antigen (HLA) Testing in Pharmacogenomics. Methods Mol Biol 2022; 2547:21-45. [PMID: 36068459 DOI: 10.1007/978-1-0716-2573-6_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The genetic region on the short arm of chromosome 6 where the human leukocyte antigen (HLA) genes are located is the major histocompatibility complex. The genes in this region are highly polymorphic, and some loci have a high degree of homology with other genes and pseudogenes. Histocompatibility testing has traditionally been performed in the setting of transplantation and involves determining which specific alleles are present. Several HLA alleles have been associated with disease risk or increased risk of adverse drug reaction (ADR) when treated with certain medications. Testing for these applications differs from traditional histocompatibility in that the desired result is simply presence or absence of the allele of interest, rather than determining which allele is present. At present, the majority of HLA typing is done by molecular methods using commercially available kits. A subset of pharmacogenomics laboratories has developed their own methods, and in some cases, query single nucleotide variants associated with certain HLA alleles rather than directly testing for the allele. In this chapter, a brief introduction to the HLA system is provided, followed by an overview of a variety of testing technologies including those specifically used in pharmacogenomics, and the chapter concludes with details regarding specific HLA alleles associated with ADR.
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Affiliation(s)
- Ann M Moyer
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA.
| | - Manish J Gandhi
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
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23
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Khalili N. The Immunogenetics of Cutaneous Drug Reactions. The Immunogenetics of Dermatologic Diseases 2022. [DOI: 10.1007/978-3-030-92616-8_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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24
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Meng H, Zhang W, Ye X. Association of HLA Alleles with Antiepileptic Drug-Induced Mild Cutaneous Reactions: A Case-Control Study of a Northeast Han Chinese Population. Neurol India 2022; 70:2100-2105. [DOI: 10.4103/0028-3886.359276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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25
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Phung TH, Cong Duong KN, Junio Gloria MA, Nguyen TK. The association between HLA-B*15:02 and phenytoin-induced severe cutaneous adverse reactions: a meta-analysis. Pharmacogenomics 2021; 23:49-59. [PMID: 34816768 DOI: 10.2217/pgs-2021-0126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: Phenytoin (PHT) is a common anticonvulsant agent known for inducing severe cutaneous adverse reactions (SCARs). HLA-B*15:02 as a risk factor of PHT-induced SCARs was reported in numerous studies with inconsistent results. This meta-analysis aimed to establish pooling evidence of this association. Materials & methods: Pooled odds ratios (ORs) with 95% CIs were estimated using a random-effects model. Results: A total of 11 studies on 1389 patients, were included for the analyses. There was a significant association between HLA-B*15:02 and PHT-induced SCAR (pooled OR = 2.29, 95% CI: 1.25-4.19, p = 0.008). Furthermore, there was a significant association regarding Stevens-Johnson syndrome/toxic epidermal necrolysis (OR = 3.63, 95% CI: 2.15-6.13, p < 0.001) but no association regarding drug reaction with eosinophilia and systemic symptom. Conclusion: The results supported the recommendations of HLA-B*15:02 screening before treatment with PHT.
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Affiliation(s)
- Thanh Huong Phung
- Department of Biochemistry, Hanoi University of Pharmacy, Hanoi, Vietnam
| | - Khanh Ngoc Cong Duong
- School of Medicine, Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Mac Ardy Junio Gloria
- Department of Pharmacy, University of The Philippines, Manila College of Pharmacy, Manila, Philippines
| | - Thien Khac Nguyen
- Department of Biochemistry, Hanoi University of Pharmacy, Hanoi, Vietnam
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26
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Wong CSM, Yap DYH, Ip P, Wong WHS, Chua GT, Yeung CK, Chan HHL, Kwok JSY. HLA-B*15:11 status and carbamazepine-induced severe cutaneous adverse drug reactions in HLA-B*15:02 negative Chinese. Int J Dermatol 2021; 61:184-190. [PMID: 34553372 DOI: 10.1111/ijd.15792] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 05/04/2021] [Accepted: 06/29/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND HLA-B*15:11 is associated with carbamazepine (CBZ)-induced severe cutaneous adverse drug reactions (SCARs) in Japanese and some Asian populations, but such data remains relatively limited in Chinese. Routine HLA-B*15:02 screening is mandatory before CBZ commencement, however, SCARs related to CBZ were still observed in non-HLA*B-15:02 carriers. OBJECTIVE We aimed to find out the prevalence of HLA-B*15:11 in Chinese patients and its associations with CBZ-induced SCARs. METHOD We screened 8,328 blood samples collected for HLA allele typing before CBZ commencement during the period of January 2014 to December 2019. In HLA-B*15:02 negative Chinese patients, HLA-B*15:11 status were further screened, and the incidence of SCARs in the CBZ group was compared with the control group without CBZ use. RESULT In this cohort, 1416 out of 8328 patients (17%) tested HLA-B*15:02 positive and were advised to avoid CBZ, while 80 (0.96%) were found to be HLA-B*15:11 positive. In 6911 (83%) patients who tested HLA-B*15:02 negative, 70 (1.01%) were HLA-B*15:11 positive. Five out of 70 (7.14%) patients had SCARs. The incidence of SCARs in HLA-B*15:11 carriers who received CBZ was significantly higher than those without CBZ (17.4% [4/23] vs. 2.13% [1/47], P = 0.037*). The odds ratio was 9.68 (95% CI 1.02-92.4, P = 0.048*). These included: one Stevens-Johnson syndrome (SJS), two DRESS, and one MPE after CBZ use, while one developed MPE after phenytoin use in control. CONCLUSION HLA-B*15:11 is a potential risk factor of CBZ-induced SCARs in HLA-B*15:02 negative Chinese patients. Further screening of HLA-B*15:11 status in those HLA-B*15:02 negative patients is recommended to avoid undesirable SCARs.
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Affiliation(s)
- Christina S M Wong
- Division of Dermatology, Department of Medicine, The Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong
| | - Desmond Y H Yap
- Division of Nephrology, Department of Medicine, The Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong
| | - Patrick Ip
- Department of Paediatrics & Adolescent Medicine, The Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong
| | - Wilfred H S Wong
- Department of Paediatrics & Adolescent Medicine, The Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong
| | - Gilbert T Chua
- Department of Paediatrics & Adolescent Medicine, The Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong
| | - Chi-Keung Yeung
- Division of Dermatology, Department of Medicine, The Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong
| | - Henry H L Chan
- Division of Dermatology, Department of Medicine, The Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong
| | - Janette S Y Kwok
- Division of Transplantation and Immunogenetics, Department of Pathology, Queen Mary Hospital, Hong Kong, Hong Kong
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27
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Ho AMC, Weinshilboum RM, Frye MA, Biernacka JM. Genetics and antiepileptic mood stabilizer treatment response in bipolar disorder: what do we know? Pharmacogenomics 2021; 22:913-925. [PMID: 34486896 DOI: 10.2217/pgs-2021-0041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Antiepileptic mood stabilizers (AED-MS) are often used to treat bipolar disorder (BD). Similar to other mood disorder medications, AED-MS treatment response varies between patients. Identification of biomarkers associated with treatment response may ultimately help with the delivery of individualized treatment and lead to improved treatment efficacy. Here, we conducted a narrative review of the current knowledge of the pharmacogenomics of AED-MS (valproic acid, lamotrigine and carbamazepine) treatment response in BD, including genetic contributions to AED-MS pharmacokinetics. Genes involved in neurotransmitter systems and drug transport have been shown to be associated with AED-MS treatment response. As more studies are conducted, and experimental and analytical methods advance, knowledge of AED-MS pharmacogenomics is expected to grow and contribute to precision medicine in BD.
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Affiliation(s)
- Ada Man-Choi Ho
- Department of Psychiatry & Psychology, Mayo Clinic, Rochester, MN 55905, USA
| | - Richard M Weinshilboum
- Department of Molecular Pharmacology & Experimental Therapeutics, Mayo Clinic, Rochester, MN 55905, USA
| | - Mark A Frye
- Department of Psychiatry & Psychology, Mayo Clinic, Rochester, MN 55905, USA
| | - Joanna M Biernacka
- Department of Psychiatry & Psychology, Mayo Clinic, Rochester, MN 55905, USA.,Department of Quantitative Health Sciences, Mayo Clinic, Rochester, MN 55905, USA
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28
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Yang SC, Chen CB, Lin MY, Zhang ZY, Jia XY, Huang M, Zou YF, Chung WH. Genetics of Severe Cutaneous Adverse Reactions. Front Med (Lausanne) 2021; 8:652091. [PMID: 34336873 PMCID: PMC8319741 DOI: 10.3389/fmed.2021.652091] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 05/11/2021] [Indexed: 12/19/2022] Open
Abstract
Severe cutaneous adverse reactions (SCARs) including Stevens-Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and drug rash with eosinophilia and systemic symptoms (DRESS) are T cells-mediated life-threatening immune reactions, most commonly induced by drug. The last decade has seen significant progress in SCARs research. Recent studies have unveiled the pathogenesis of SCARs involved in susceptible genes, including human leukocyte antigens (HLA) and drugs-T cell receptor (TCR) interaction that may trigger T cell activation with downstream immune signaling of cytokines/chemokines and specific cytotoxic proteins releases. Advances in identification of multiple genetic alleles associated with specific drugs related SCARS in different populations is an important breakthrough in recent years for prevention of SCARs. This article summarized the findings on genetic factors related to SJS/TEN, especially for HLA.
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Affiliation(s)
- Shang-Chen Yang
- Department of Dermatology, Xiamen Chang Gung Allergology Consortium, Xiamen Chang Gung Hospital, Xiamen, China
| | - Chun-Bing Chen
- Department of Dermatology, Xiamen Chang Gung Allergology Consortium, Xiamen Chang Gung Hospital, Xiamen, China.,Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Cancer Vaccine and Immune Cell Therapy Core Laboratory, Department of Medical Research, Chang Gung Memorial Hospital, Taoyuan, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung, Taiwan.,Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan.,Immune-Oncology Center of Excellence, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Mao-Ying Lin
- Department of Dermatology, Xiamen Chang Gung Allergology Consortium, Xiamen Chang Gung Hospital, Xiamen, China
| | - Zhi-Yang Zhang
- Department of Dermatology, Xiamen Chang Gung Allergology Consortium, Xiamen Chang Gung Hospital, Xiamen, China
| | - Xiao-Yan Jia
- Department of Neurology, Xiamen Chang Gung Hospital, Xiamen, China
| | - Ming Huang
- Department of Neurology, Xiamen Chang Gung Hospital, Xiamen, China
| | - Ya-Fen Zou
- Department of Neurology, Xiamen Chang Gung Hospital, Xiamen, China
| | - Wen-Hung Chung
- Department of Dermatology, Xiamen Chang Gung Allergology Consortium, Xiamen Chang Gung Hospital, Xiamen, China.,Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Cancer Vaccine and Immune Cell Therapy Core Laboratory, Department of Medical Research, Chang Gung Memorial Hospital, Taoyuan, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung, Taiwan.,Immune-Oncology Center of Excellence, Chang Gung Memorial Hospital, Linkou, Taiwan.,Department of Dermatology, Beijing Tsinghua Chang Gung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China.,Department of Dermatology, Ruijin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China.,Genomic Medicine Core Laboratory, Chang Gung Memorial Hospital, Linkou, Taiwan
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29
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Sukasem C, Sririttha S, Chaichan C, Nakkrut T, Satapornpong P, Jaruthamsophon K, Jantararoungtong T, Koomdee N, Medhasi S, Oo-Puthinan S, Rerkpattanapipat T, Klaewsongkram J, Rerknimitr P, Tuchinda P, Chularojanamontri L, Tovanabutra N, Suvannang N, Rungrotmongkol T, Saokaew S, Aekplakorn W, Puangpetch A. Spectrum of cutaneous adverse reactions to aromatic antiepileptic drugs and human leukocyte antigen genotypes in Thai patients and meta-analysis. Pharmacogenomics J 2021; 21:682-690. [PMID: 34175889 PMCID: PMC8602035 DOI: 10.1038/s41397-021-00247-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 05/23/2021] [Accepted: 06/14/2021] [Indexed: 11/09/2022]
Abstract
Aromatic antiepileptic drugs (AEDs)-induced cutaneous adverse drug reactions (cADRs) add up to the limited use of the AEDs in the treatment and prevention of seizures. Human leukocyte antigen-B (HLA-B) alleles have been linked to AEDs-induced cADRs. We investigated the association between cADRs (including Stevens-Johnson syndrome; SJS/toxic epidermal necrolysis; TEN, drug reaction with eosinophilia and systemic symptoms; DRESS, and Maculopapular eruption; MPE) caused by AEDs (phenytoin, carbamazepine, lamotrigine, phenobarbital and oxcarbazepine) and HLA-B alleles in Thai population. Through the case-control study, 166 patients with AEDs-induced cADRs, 426 AEDs-tolerant patients (AEDs-tolerant controls), and 470 healthy subjects (Thai population) were collected. The HLA genotypes were detected using the polymerase chain reaction-sequence specific oligonucleotide probe (PCR-SSOP) method. We also performed a meta-analysis with these data and other populations. The carrier rate of HLA-B*15:02 was significantly different between AEDs-induced cADRs group and AEDs-tolerant group (Odds ratio; OR 4.28, 95% Confidence interval; CI 2.64-6.95, p < 0.001), AEDs-induced cADRs group and Thai population (OR 2.15, 95%CI 1.41-3.29, p < 0.001). In meta-analysis showed the strong association HLA-B*15:02 with AEDs-induced cADRs (OR 4.77, 95%CI 1.79-12.73, p < 0.001). Furthermore, HLA-B*15:02 was associated with SJS/TEN induced by AEDs (OR 10.28, 95%CI 6.50-16.28, p < 0.001) Phenytoin (OR 4.12, 95%CI 1.77-9.59, p = 0.001) and carbamazepine (OR 137.69, 95%CI 50.97-371.98, p < 0.001). This study demonstrated that genetic association for AEDs-induced cADRs was phenotype-specific. A strong association between HLA-B*15:02 and AEDs-induced SJS/TEN was demonstrated with an OR of 10.79 (95%CI 5.50-21.16, p < 0.001) when compared with AEDs-tolerant group. On the other hand, the carrier rates of HLA-B*08:01, HLA-B*13:01, and HLA-B*56:02 were significantly higher in the DRESS group compared with the AEDs-tolerant group (p = 0.029, 0.007, and 0.017, respectively). The HLA-B*15:02 allele may represent a risk factor for AEDs-induced cADRs.
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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, Thailand. .,Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC), Ramathibodi Hospital, Bangkok, Thailand. .,The Thai Severe Cutaneous Adverse Drug Reaction (THAI-SCAR) research group, Bangkok, Thailand. .,Pharmacogenomics and Precision Medicine, The Preventive Genomics & Family Check-up Services Center, Bumrungrad International Hospital, Bangkok, Thailand.
| | - Suthida Sririttha
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.,Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC), Ramathibodi Hospital, Bangkok, Thailand.,Department of Clinical Pharmacy Practice, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Chonlawat Chaichan
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.,Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC), Ramathibodi Hospital, Bangkok, Thailand.,Department of Pathology, School of medicine, University of Phayao, Phayao, Thailand
| | - Thapanat Nakkrut
- Department of Pharmacy Practice, Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok, Thailand.,Department of Pharmacy, Neurological Institute of Thailand, Bangkok, Thailand
| | - Patompong Satapornpong
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.,Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC), Ramathibodi Hospital, Bangkok, Thailand.,Division of General Pharmacy Practice, Department of Pharmaceutical Care, College of Pharmacy, Rangsit University, Pathum Thani, Thailand
| | - Kanoot Jaruthamsophon
- Department of Pathology, Faculty of Medicine, Prince of Songkla University, Songkla, Thailand
| | - Thawinee Jantararoungtong
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.,Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC), Ramathibodi Hospital, Bangkok, Thailand
| | - Napatrupron Koomdee
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.,Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC), Ramathibodi Hospital, Bangkok, Thailand
| | - Sadeep Medhasi
- Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Sarawut Oo-Puthinan
- Department of Pharmacy Practice, Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok, Thailand
| | - Ticha Rerkpattanapipat
- The Thai Severe Cutaneous Adverse Drug Reaction (THAI-SCAR) research group, Bangkok, Thailand.,Division of Allergy Immunology and Rheumatology, Department of Medicine, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Jettanong Klaewsongkram
- The Thai Severe Cutaneous Adverse Drug Reaction (THAI-SCAR) research group, Bangkok, Thailand.,Skin and Allergy Research Unit, Division of Allergy and Clinical Immunology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Pawinee Rerknimitr
- The Thai Severe Cutaneous Adverse Drug Reaction (THAI-SCAR) research group, Bangkok, Thailand.,Division of Dermatology, Department of Medicine, Faculty of Medicine, Skin and Allergy Research Unit, Chulalongkorn University, Bangkok, Thailand
| | - Papapit Tuchinda
- The Thai Severe Cutaneous Adverse Drug Reaction (THAI-SCAR) research group, Bangkok, Thailand.,Department of Dermatology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Leena Chularojanamontri
- The Thai Severe Cutaneous Adverse Drug Reaction (THAI-SCAR) research group, Bangkok, Thailand.,Department of Dermatology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Napatra Tovanabutra
- The Thai Severe Cutaneous Adverse Drug Reaction (THAI-SCAR) research group, Bangkok, Thailand.,Division of Dermatology, Department of Internal Medicine, Chiang Mai University, Chiang Mai, Thailand
| | | | - Thanyada Rungrotmongkol
- Structural and Computational Biology Research Unit, Department of Biochemistry, Faculty of Science and Program in Bioinformatics and Computational Biology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Surasak Saokaew
- Division of Pharmacy Practice, Department of Pharmaceutical Care, School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand.,Center of Health Outcomes Research and Therapeutic Safety (Cohorts), School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand.,Unit of Excellence on Clinical Outcomes Research and IntegratioN (UNICORN), School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand
| | - Wichai Aekplakorn
- Department of Community Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Apichaya Puangpetch
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.,Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC), Ramathibodi Hospital, Bangkok, Thailand
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Ogese MO, Watkinson J, Lister A, Faulkner L, Gibson A, Hillegas A, Sakatis MZ, Park BK, Naisbitt DJ. Development of an Improved T-cell Assay to Assess the Intrinsic Immunogenicity of Haptenic Compounds. Toxicol Sci 2021; 175:266-278. [PMID: 32159798 DOI: 10.1093/toxsci/kfaa034] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The prediction of drug hypersensitivity is difficult due to the lack of appropriate models and known risk factors. In vitro naïve T-cell priming assays that assess immunogenicity have been developed. However, their application is limited due requirements for 2 batches of autologous dendritic cells (DC) and inconsistent results; a consequence of single well readouts when exploring reactions where compound-specific T-cell frequency is undefined. Hence, we aimed to develop an improved, but simplified assay, termed the T-cell multiple well assay (T-MWA), that permits assessment of drug-specific activation of naïve T cells, alongside analysis of the strength of the induced response and the number of cultures that respond. DC naïve T-cell coculture, depleted of regulatory T cells (Tregs), was conducted in up to 48 wells for 2 weeks with model haptens (nitroso sulfamethoxazole [SMX-NO], Bandrowski's base [BB], or piperacillin [PIP]). Cultures were rechallenged with hapten and T-cell proliferation was measured using [3H]-thymidine incorporation. Priming of naïve T cells was observed with SMX-NO, with no requirement for DC during restimulation. Greater than 65% of cultures were activated with SMX-NO; with 8.0%, 30.8%, and 27.2% characterized as weak (stimulation index [SI] =1.5-1.9), moderate (SI = 2-3.9), and strong responses (SI > 4), respectively. The number of responding cultures and strength of the response was reproducible when separate blood donations were compared. Coinhibitory checkpoint blockade increased the strength of the proliferative response, but not the number of responding cultures. Moderate to strong priming responses were detected with BB, whereas PIP stimulated only a small number of cultures to proliferate weakly. In drug-responsive cultures inducible CD4+CD25+FoxP3+CD127low Tregs were also identified. To conclude, the T-MWA offers improvements over existing assays and with development it could be used to study multiple HLA-typed donors in a single plate format.
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Affiliation(s)
- Monday O Ogese
- Department of Molecular and Clinical Pharmacology, MRC Centre for Drug Safety Science, University of Liverpool, LiverpoolL69 3GE, UK
| | - Joel Watkinson
- Department of Molecular and Clinical Pharmacology, MRC Centre for Drug Safety Science, University of Liverpool, LiverpoolL69 3GE, UK
| | - Adam Lister
- Department of Molecular and Clinical Pharmacology, MRC Centre for Drug Safety Science, University of Liverpool, LiverpoolL69 3GE, UK
| | - Lee Faulkner
- Department of Molecular and Clinical Pharmacology, MRC Centre for Drug Safety Science, University of Liverpool, LiverpoolL69 3GE, UK
| | - Andrew Gibson
- Department of Molecular and Clinical Pharmacology, MRC Centre for Drug Safety Science, University of Liverpool, LiverpoolL69 3GE, UK.,Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, Western Australia, Australia
| | - Aimee Hillegas
- Immunological Toxicology, In Vitro In Vivo Translation, GlaxoSmithKline, Collegeville, Pennsylvania
| | - Melanie Z Sakatis
- Investigative Safety & Drug Metabolism, In Vitro In Vivo Translation, GlaxoSmithKline,HertfordshireSG12 0DP, UK
| | - Brian Kevin Park
- Department of Molecular and Clinical Pharmacology, MRC Centre for Drug Safety Science, University of Liverpool, LiverpoolL69 3GE, UK
| | - Dean J Naisbitt
- Department of Molecular and Clinical Pharmacology, MRC Centre for Drug Safety Science, University of Liverpool, LiverpoolL69 3GE, UK
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31
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Ahmed AF, Sukasem C, Sabbah MA, Musa NF, Mohamed Noor DA, Daud NAA. Genetic Determinants in HLA and Cytochrome P450 Genes in the Risk of Aromatic Antiepileptic-Induced Severe Cutaneous Adverse Reactions. J Pers Med 2021; 11:383. [PMID: 34067134 PMCID: PMC8150699 DOI: 10.3390/jpm11050383] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/20/2021] [Accepted: 04/28/2021] [Indexed: 12/19/2022] Open
Abstract
Adverse drug reaction (ADR) is a pressing health problem, and one of the main reasons for treatment failure with antiepileptic drugs. This has become apparent in the event of severe cutaneous adverse reactions (SCARs), which can be life-threatening. In this review, four hypotheses were identified to describe how the immune system is triggered in the development of SCARs, which predominantly involve the human leukocyte antigen (HLA) proteins. Several genetic variations in HLA genes have been shown to be strongly associated with the susceptibility to developing SCARs when prescribed carbamazepine or phenytoin. These genetic variations were also shown to be prevalent in certain populations. Apart from the HLA genes, other genes proposed to affect the risk of SCARs are genes encoding for CYP450 drug-metabolising enzymes, which are involved in the pharmacokinetics of offending drugs. Genetic variants in CYP2C9 and CYPC19 enzymes were also suggested to modulate the risk of SCARs in some populations. This review summarizes the literature on the manifestation and aetiology of antiepileptic-induced SCARs, updates on pharmacogenetic markers associated with this reaction and the implementation of pre-emptive testing as a preventive strategy for SCARs.
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Affiliation(s)
- Ali Fadhel Ahmed
- Discipline of Clinical Pharmacy, School of Pharmaceutical Sciences, Universiti Sains Malaysia, Pulau Pinang 11800, Malaysia or (A.F.A.); (D.A.M.N.)
| | - Chonlaphat Sukasem
- Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand;
- Laboratory for Pharmacogenomics, Somdech Phra Debaratana Medical Center (SDMC), Ramathibodi Hospital, Bangkok 10400, Thailand
- The Thai Severe Cutaneous Adverse Drug Reaction (THAI-SCAR) Research Group, Chulalongkorn University, Bangkok 10330, Thailand
- Advanced Research and Development Laboratory, Bumrungrad International Hospital, Bangkok 10110, Thailand
| | - Majeed Arsheed Sabbah
- Forensic DNA for Research and Training Centre, Alnahrain University, Baghdad 64074, Iraq;
| | - Nur Fadhlina Musa
- Human Genome Center, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kota Bharu 16150, Malaysia;
| | - Dzul Azri Mohamed Noor
- Discipline of Clinical Pharmacy, School of Pharmaceutical Sciences, Universiti Sains Malaysia, Pulau Pinang 11800, Malaysia or (A.F.A.); (D.A.M.N.)
| | - Nur Aizati Athirah Daud
- Discipline of Clinical Pharmacy, School of Pharmaceutical Sciences, Universiti Sains Malaysia, Pulau Pinang 11800, Malaysia or (A.F.A.); (D.A.M.N.)
- Human Genome Center, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kota Bharu 16150, Malaysia;
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Mori F, Blanca-Lopez N, Caubet JC, Demoly P, Du Toit G, Gomes ER, Kuyucu S, Romano A, Soyer O, Tsabouri S, Atanaskovic-Markovic M. Delayed hypersensitivity to antiepileptic drugs in children. Pediatr Allergy Immunol 2021; 32:425-436. [PMID: 33205474 DOI: 10.1111/pai.13409] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 11/03/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND Antiepileptic drugs (AEDs) are widely used for the treatment of epilepsy, but they can be associated with the development of mainly delayed/non-immediate hypersensitivity reactions (HRs). Although these reactions are usually cutaneous, self-limited, and spontaneously resolve within days after drug discontinuation, sometime HR reactions to AEDs can be severe and life-threatening. AIM This paper seeks to show examples on practical management of AED HRs in children starting from a review of what it is already known in literature. RESULTS Risk factors include age, history of previous AEDs reactions, viral infections, concomitant medications, and genetic factors. The diagnostic workup consists of in vivo (intradermal testing and patch testing) and in vitro tests [serological investigation to exclude the role of viral infection, lymphocyte transformation test (LTT), cytokine detection in ELISpot assays, and granulysin (Grl) in flow cytometry. Treatment is based on a prompt drug discontinuation and mainly on the use of glucocorticoids. CONCLUSION Dealing with AED HRs is challenging. The primary goal in the diagnosis and management of HRs to AEDs should be trying to accurately identify the causal trigger and simultaneously identify a safe and effective alternative anticonvulsant. There is therefore an ongoing need to improve our knowledge of HS reactions due to AED medications and in particular to improve our diagnostic capabilities.
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Affiliation(s)
- Francesca Mori
- Allergy Unit, Department of Pediatric Medicine, Meyer Children's Hospital, Florence, Italy
| | | | - Jean-Christoph Caubet
- Pediatric Allergy Unit, Department of Child and Adolescent, Geneva University Hospital, Geneva, Switzerland
| | - Pascal Demoly
- Département de Pneumologie et Addictologie, Centre Hospitalier Universitaire de Montpellier, Hôpital Arnaud de Villeneuve, univ Montpellier, Montpellier, France.,Institut Pierre-Louis D'épidémiologie et de Santé Publique, Équipe EPAR, Sorbonne Université, INSERM, Paris, France
| | - George Du Toit
- Children's Allergy Service, Evelina Children's Hospital, Guy's and St Thomas', London, UK.,Women and Children's Health, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Eva R Gomes
- Allergy Department, Centro Hospitalar Universitário do Porto, Porto, Portugal
| | - Semanur Kuyucu
- Department of Pediatric Allergy and Immunology, Faculty of Medicine, Mersin University, Mersin, Turkey
| | - Antonino Romano
- IRCCS Oasi Maria S.S., Troina, Italy.,Fondazione Mediterranea G.B. Morgagni, Italy
| | - Ozge Soyer
- Department of Pediatric Allergy, School of Medicine, Hacettepe University, Ankara, Turkey
| | - Sophia Tsabouri
- Department of Paediatrics, Faculty of Medicine, School of Medicine, University of Ioannina, Ioannina, Greece
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33
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Ding D, Zhou D, Sander JW, Wang W, Li S, Hong Z. Epilepsy in China: major progress in the past two decades. Lancet Neurol 2021; 20:316-326. [PMID: 33743240 DOI: 10.1016/s1474-4422(21)00023-5] [Citation(s) in RCA: 72] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Revised: 12/15/2020] [Accepted: 01/07/2021] [Indexed: 02/08/2023]
Abstract
China has approximately 10 million people with epilepsy. There is a vast epilepsy treatment gap in China, mainly driven by deficiencies in health-care delivery and social discrimination resulting from cultural beliefs about epilepsy. WHO's Global Campaign Against Epilepsy project in China showed that it was possible to treat epilepsy in primary care settings, which was a notable milestone. The China Association Against Epilepsy has been a necessary force to stimulate interest in epilepsy care and research by the medical and scientific community. Nearly 20 different anti-seizure medications are now available in China. Non-pharmacological options are also available, but there are still unmet needs for epilepsy management. The Chinese epilepsy research portfolio is varied, but the areas in which there are the most concentrated focus and expertise are epidemiology and clinical research. The challenges for further improvement in delivering care for people with epilepsy in China are primarily related to public health and reducing inequalities within this vast country.
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Affiliation(s)
- Ding Ding
- Institute of Neurology, Huashan Hospital, Fudan University, Shanghai, China
| | - Dong Zhou
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, China
| | - Josemir W Sander
- NIHR University College London Hospitals Biomedical Research Centre, UCL Queen Square Institute of Neurology, London, UK; Chalfont Centre for Epilepsy, Chalfont St Peter, Buckinghamshire, UK; Stichting Epilepsie Instellingen Nederland, Heemstede, Netherlands.
| | - Wenzhi Wang
- Department of Neuroepidemiology, Beijing Neurosurgical Institute, Beijing, China
| | - Shichuo Li
- China Association against Epilepsy, Beijing, China
| | - Zhen Hong
- Institute of Neurology, Huashan Hospital, Fudan University, Shanghai, China
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34
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Fonseca DJ, Morel A, Llinás-Caballero K, Bolívar-Salazar D, Laissue P. Whole-Exome Sequencing in Patients Affected by Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis Reveals New Variants Potentially Contributing to the Phenotype. Pharmgenomics Pers Med 2021; 14:287-299. [PMID: 33688237 PMCID: PMC7935440 DOI: 10.2147/pgpm.s289869] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Accepted: 12/26/2020] [Indexed: 12/17/2022]
Abstract
Background Adverse drug reactions (ADRs) are frequent occurring events that can essentially be defined as harmful or unpleasant symptoms secondary to the use of a medicinal product. ADRs involve a wide spectrum of clinical manifestations ranging from minor itching and rash to life-threatening reactions. Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are rare ADRs. SJS-TEN may be considered a polygenic pathology due to additive/epistatic effects caused by sequence variants in numerous genes. Next-generation sequencing (NGS) represents a potentially interesting exploration tool in such scenario as it facilitates the simultaneous analysis of large genomic regions and genes at affordable cost. Methods The present study has involved using whole-exome sequencing (WES) for the first time on SJS-TEN patients. It involved robust and innovative multistep bioinformatics analysis focusing on 313 candidate genes potentially participating in the disease’s aetiology, specific drugs’ metabolism and gene regulation. Results We identified combinations of frequently occurring and rare variants that may contribute to the disease’s pathogenesis. Depending on the specific drug being taken, different variants (and alleles) in NAT2, CYP2D8, CYP2B6, ABCC2, UGT2B7 and TCF3 were identified as coherent candidates representing potential future markers for SJS-TEN. Conclusion The present study proposed and has described (for the first time) a large-scale genomic analysis of patients affected by SJS-TEN. The genes and variants identified represent relevant candidates potentially participating in the disease’s pathogenesis. Corroborating that proposed by others, we found that complex combinations of frequently occurring and rare variants participating in particular drug metabolism molecular cascades could be associated with the phenotype. TCF3 TF may be considered a coherent candidate for SJS-TEN that should be analysed in new cohorts of patients having ADRs.
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Affiliation(s)
- Dora Janeth Fonseca
- Center for Research in Genetics and Genomics-CIGGUR, GENIUROS Research Group, School of Medicine and Health Sciences, Universidad Del Rosario, Bogotá, Colombia
| | - Adrien Morel
- Center for Research in Genetics and Genomics-CIGGUR, GENIUROS Research Group, School of Medicine and Health Sciences, Universidad Del Rosario, Bogotá, Colombia
| | - Kevin Llinás-Caballero
- Center for Research in Genetics and Genomics-CIGGUR, GENIUROS Research Group, School of Medicine and Health Sciences, Universidad Del Rosario, Bogotá, Colombia
| | - David Bolívar-Salazar
- Center for Research in Genetics and Genomics-CIGGUR, GENIUROS Research Group, School of Medicine and Health Sciences, Universidad Del Rosario, Bogotá, Colombia
| | - Paul Laissue
- Center for Research in Genetics and Genomics-CIGGUR, GENIUROS Research Group, School of Medicine and Health Sciences, Universidad Del Rosario, Bogotá, Colombia.,BIOPAS Laboratoires, Orphan Diseases Unit, BIOPAS GROUP, Bogotá, Colombia
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35
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Abstract
A key goal of clinical care is to treat patients as individuals and to approach therapeutics in such a way that it has optimal efficacy and minimal toxicity. With swift technological advances, such as genomic sequencing and molecular targeted drug exploitation, the concept of precision medicine has been robustly promoted in recent years. Precision medicine endeavors to demarcate diseases using multiple data sources from genomics to digital health metrics in order to facilitate an individualized yet "evidence-based" decision regarding diagnostic and therapeutic approaches. In this way, therapeutics can be centered toward patients based on their molecular presentation rather than grouping them into broad categories with a "one size fits all" approach. This review article is aimed to provide a broad overview of the advent and emergence of precision medicine in view of its current implications.
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Affiliation(s)
- Neha Akhoon
- Department of Pharmacology, Armed Forces Medical College, Pune, Maharashtra, India
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36
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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? Curr Treat Options Allergy 2021. [DOI: 10.1007/s40521-020-00278-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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37
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Tan THL, Perucca P, O'Brien TJ, Kwan P, Monif M. Inflammation, ictogenesis, and epileptogenesis: An exploration through human disease. Epilepsia 2020; 62:303-324. [PMID: 33316111 DOI: 10.1111/epi.16788] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/21/2020] [Accepted: 11/22/2020] [Indexed: 12/14/2022]
Abstract
Epilepsy is seen historically as a disease of aberrant neuronal signaling manifesting as seizures. With the discovery of numerous auto-antibodies and the subsequent growth in understanding of autoimmune encephalitis, there has been an increasing emphasis on the contribution of the innate and adaptive immune system to ictogenesis and epileptogenesis. Pathogenic antibodies, complement activation, CD8+ cytotoxic T cells, and microglial activation are seen, to various degrees, in different seizure-associated neuroinflammatory and autoimmune conditions. These aberrant immune responses are thought to cause disruptions in neuronal signaling, generation of acute symptomatic seizures, and, in some cases, the development of long-term autoimmune epilepsy. Although early treatment with immunomodulatory therapies improves outcomes in autoimmune encephalitides and autoimmune epilepsies, patient identification and treatment selection are not always clear-cut. This review examines the role of the different components of the immune system in various forms of seizure disorders including autoimmune encephalitis, autoimmune epilepsy, Rasmussen encephalitis, febrile infection-related epilepsy syndrome (FIRES), and new-onset refractory status epilepticus (NORSE). In particular, the pathophysiology and unique cytokine profiles seen in these disorders and their links with diagnosis, prognosis, and treatment decision-making are discussed.
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Affiliation(s)
- Tracie Huey-Lin Tan
- Department of Neuroscience, Central Clinical School, Faculty of Medicine, Nursing and Health Science, Monash University, Melbourne, Victoria, Australia.,Department of Neurology, Alfred Hospital, Melbourne, Victoria, Australia.,Department of Neurology, Royal Melbourne Hospital, Melbourne, Victoria, Australia
| | - Piero Perucca
- Department of Neuroscience, Central Clinical School, Faculty of Medicine, Nursing and Health Science, Monash University, Melbourne, Victoria, Australia.,Department of Neurology, Alfred Hospital, Melbourne, Victoria, Australia.,Department of Neurology, Royal Melbourne Hospital, Melbourne, Victoria, Australia
| | - Terence J O'Brien
- Department of Neuroscience, Central Clinical School, Faculty of Medicine, Nursing and Health Science, Monash University, Melbourne, Victoria, Australia.,Department of Neurology, Alfred Hospital, Melbourne, Victoria, Australia.,Department of Neurology, Royal Melbourne Hospital, Melbourne, Victoria, Australia
| | - Patrick Kwan
- Department of Neuroscience, Central Clinical School, Faculty of Medicine, Nursing and Health Science, Monash University, Melbourne, Victoria, Australia.,Department of Neurology, Alfred Hospital, Melbourne, Victoria, Australia
| | - Mastura Monif
- Department of Neuroscience, Central Clinical School, Faculty of Medicine, Nursing and Health Science, Monash University, Melbourne, Victoria, Australia.,Department of Neurology, Alfred Hospital, Melbourne, Victoria, Australia.,Department of Neurology, Royal Melbourne Hospital, Melbourne, Victoria, Australia
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38
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Nabbout R, Kuchenbuch M. Impact of predictive, preventive and precision medicine strategies in epilepsy. Nat Rev Neurol 2020; 16:674-88. [PMID: 33077944 DOI: 10.1038/s41582-020-0409-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/01/2020] [Indexed: 12/15/2022]
Abstract
Over the last decade, advances in genetics, neuroimaging and EEG have enabled the aetiology of epilepsy to be identified earlier in the disease course than ever before. At the same time, progress in the study of experimental models of epilepsy has provided a better understanding of the mechanisms underlying the condition and has enabled the identification of therapies that target specific aetiologies. We are now witnessing the impact of these advances in our daily clinical practice. Thus, now is the time for a paradigm shift in epilepsy treatment from a reactive attitude, treating patients after the onset of epilepsy and the initiation of seizures, to a proactive attitude that is more broadly integrated into a 'P4 medicine' approach. This P4 approach, which is personalized, predictive, preventive and participatory, puts patients at the centre of their own care and, ultimately, aims to prevent the onset of epilepsy. This aim will be achieved by adapting epilepsy treatments not only to a given syndrome but also to a given patient and moving from the usual anti-seizure treatments to personalized treatments designed to target specific aetiologies. In this Review, we present the current state of this ongoing revolution, emphasizing the impact on clinical practice.
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39
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Noy A, Wainstock T, Sheiner E, Leibson T, Horev A, Pariente G. Maternal known drug allergy and long-term dermatological morbidity of the offspring. Am J Reprod Immunol 2020; 85:e13356. [PMID: 33025676 DOI: 10.1111/aji.13356] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 08/13/2020] [Accepted: 09/28/2020] [Indexed: 12/17/2022] Open
Abstract
Drug allergy is associated with adverse short-term perinatal outcomes such as caesarian delivery and preterm delivery. The aim of the present study was to determine whether being born to a mother with known drug allergy increases the risk for long-term dermatological morbidity of the offspring. A population-based cohort study, comparing long-term dermatological morbidity of offspring to mothers with and without known drug allergy, was conducted. Dermatological morbidity was assessed up to the age of 18 years according to a predefined set of ICD-9 codes associated with hospitalization of the offspring. A Kaplan-Meier survival curve was used to compare cumulative incidence of long-term dermatological morbidity, and a Cox proportional hazards model was constructed to control of confounders. During the study period, 243,682 deliveries met the inclusion criteria, of them 4% (n = 9756) were of mothers with known drug allergy. Offspring born to mothers with known drug allergy had higher rates of long-term dermatological morbidity Likewise, the cumulative incidence of long-term dermatological morbidity was higher as compared with those without known drug allergy (Kaplan-Meier log-rank P = .021). Using a Cox proportional hazards model, controlling for confounders, being born to a mother with known drug allergy was found to be an independent risk factor for long-term dermatological morbidity of the offspring (adjusted HR 1.2, 95% CI 1.03-1.33, P = .016). Being born to a mother with known drug allergy is independently associated with higher risk for long-term dermatological morbidity of the offspring.
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Affiliation(s)
- Ariel Noy
- Faculty of Health Sciences, Joyce & irving Goldman Medical School at Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Tamar Wainstock
- Department of Public Health, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Eyal Sheiner
- Department of Obstetrics and Gynecology, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Tom Leibson
- Department of Pediatrics, Mount Sinai Hospital, Toronto, ON, Canada.,Division of Clinical Pharmacology and Toxicology, Hospital for Sick Children, Toronto, ON, Canada
| | - Amir Horev
- Department of Dermatology and Venereology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Gali Pariente
- Department of Obstetrics and Gynecology, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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40
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Abou-Taleb DAE, El-Sayed AM, Ghabesha AA, Hassan SB. Severe cutaneous adverse drug reactions: Incidence, clinical patterns, causative drugs and modalities of treatment in Assiut University Hospital, Upper Egypt. Dermatol Ther 2020; 33:e14176. [PMID: 32779328 DOI: 10.1111/dth.14176] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 08/01/2020] [Accepted: 08/04/2020] [Indexed: 11/29/2022]
Abstract
Stevens-Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and overlap SJS/TEN are life-threatening diseases that are most frequently caused by drugs. Much debate remains about the role of systemic corticosteroids (SCs) in their treatment. Our aim to determine the incidence, causative drugs, the role and side effects of SCs in severe cutaneous adverse reactions (SCARs), in Assiut University Hospital (AUH). Patients This study was conducted in Department of Dermatology at AUH, from 2012 to 2017. All patients with SJS, overlap SJS/TEN and TEN admitted during this period were included in the study. Eighty-three patients with SCARs were included in this study. The most common type was SJS (67.5%). The incidence ranged from 1.7% in 2012 to 7.7% in 2017. Carbamazepine, valproic acid, lamotrigine, diclofenac sodium, and flucloxacillin-amoxicillin were the most common causative drugs. The most common side effects of SCs were peptic ulcer (55.5%) and hypertension (51.8%). The mortality rate in patients treated with SCs was 100% in TEN, 33.3% in overlap SJS/TEN and 16.3% in SJS. The patients of SCARs must be aware of the causative drugs and must never be re-administered. SCs in treatment of SCARs may increase the complications and the mortality rate.
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Affiliation(s)
- Doaa A E Abou-Taleb
- Faculty of Medicine, Department of Dermatology, Venereology, and Andrology, Assiut University, Assiut, Egypt
| | - Ahmed M El-Sayed
- Faculty of Pharmacy, Department of Pharmaceutics, Assiut University, Assiut, Egypt
| | | | - Sahar B Hassan
- Faculty of Pharmacy, Department of Clinical Pharmacy, Assiut University, Assiut, Egypt
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41
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Lo C, Nguyen S, Yang C, Witt L, Wen A, Liao TV, Nguyen J, Lin B, Altman RB, Palaniappan L. Pharmacogenomics in Asian Subpopulations and Impacts on Commonly Prescribed Medications. Clin Transl Sci 2020; 13:861-870. [PMID: 32100936 PMCID: PMC7485947 DOI: 10.1111/cts.12771] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 01/07/2020] [Indexed: 12/17/2022] Open
Abstract
Asians as a group comprise > 60% the world's population. There is an incredible amount of diversity in Asian and admixed populations that has not been addressed in a pharmacogenetic context. The known pharmacogenetic differences in Asian subgroups generally represent previously known variants that are present at much lower or higher frequencies in Asians compared with other populations. In this review we summarize the main drugs and known genes that appear to have differences in their pharmacogenetic properties in certain Asian populations. Evidence-based guidelines and summary statistics from the US Food and Drug Administration and the Clinical Pharmacogenetics Implementation Consortium were analyzed for ethnic differences in outcomes. Implicated drugs included commonly prescribed drugs such as warfarin, clopidogrel, carbamazepine, and allopurinol. The majority of these associations are due to Asians more commonly being poor metabolizers of cytochrome P450 (CYP) 2C19 and carriers of the human leukocyte antigen (HLA)-B*15:02 allele. The relative risk increase was shown to vary between genes and drugs, but could be > 100-fold higher in Asians. Specifically, there was a 172-fold increased risk of Stevens-Johnson syndrome and toxic epidermal necrolysis with carbamazepine use among HLA-B*15:02 carriers. The effects ranged from relatively benign reactions such as reduced drug efficacy to severe cutaneous skin reactions. These reactions are severe and prevalent enough to warrant pharmacogenetic testing and appropriate changes in dose and medication choice for at-risk populations. Further studies should be done on Asian cohorts to more fully understand pharmacogenetic variants in these populations and to clarify how such differences may influence drug response.
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Affiliation(s)
- Cody Lo
- Faculty of MedicineUniversity of British ColumbiaVancouverBritish ColumbiaCanada
| | | | - Christine Yang
- School of MedicineStanford UniversityPalo AltoCaliforniaUSA
| | - Lana Witt
- School of MedicineStanford UniversityPalo AltoCaliforniaUSA
| | - Alice Wen
- School of MedicineStanford UniversityPalo AltoCaliforniaUSA
| | | | | | - Bryant Lin
- Division of Primary Care and Population HealthSchool of MedicineStanford UniversityPalo AltoCaliforniaUSA
| | - Russ B. Altman
- Department of Biomedical Data ScienceStanford UniversityPalo AltoCaliforniaUSA
- Department of Biomedical Engineering, Genetics and MedicineStanford UniversityPalo AltoCaliforniaUSA
| | - Latha Palaniappan
- Division of Primary Care and Population HealthSchool of MedicineStanford UniversityPalo AltoCaliforniaUSA
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42
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Park HJ, Park JW, Kim SH, Choi SY, Kim HK, Jung CG, Yang MS, Kang DY, Cho MK, Kwon HS, Kang HR, Lee YW. The HLA-B*13:01 and the dapsone hypersensitivity syndrome in Korean and Asian populations: genotype- and meta-analyses. Expert Opin Drug Saf 2020; 19:1349-1356. [PMID: 32700588 DOI: 10.1080/14740338.2020.1796965] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
BACKGROUND The human leukocyte antigen (HLA)-B*13:01 was reported as an important risk factor for dapsone hypersensitivity syndrome (DHS) in Chinese and Thai populations. RESEARCH DESIGN AND METHODS From the Korean nationwide registry, seven subjects with previous DHS were included. Their HLA allele/phenotype frequencies were compared with 8 dapsone-tolerant subjects recruited from a single institution, and general population (n = 485) in Korea. The authors also performed a meta-analysis with these data using previous Chinese and Thai studies. RESULTS Among the seven DHS subjects, 85.7% presented with the HLA-B*13:01 allele. The HLA-C*03:04, HLA-DRB1*12:02 (both in linkage disequilibrium with HLA-B*13:01), and HLA-A*02:01 alleles were also presented in 85.7%, 71.4%, and 71.4%, respectively. Subjects with HLA-B*13:01 were susceptible to developing DHS compared to dapsone-tolerant controls (odds ratio [OR]: 73.667) and the Korean general population (OR: 139.500). HLA-C*03:04 (OR: 40.935), HLA-DRB*12:02 (OR: 36.613), and HLA-A*02:01 (OR: 5.862) showed similar results. In meta-analysis, HLA-B*13:01 was associated with dapsone-induced hypersensitivity (overall OR: 42.692), and subgroup analyses according to the control types demonstrated similar results (OR:43.694 and 41.866, respectively). CONCLUSIONS Similar to previous Asian population studies, HLA-B*13:01 is significantly associated with the risk of DHS in Korea. These associations may be useful for preventing DHS and improving drug safety.
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Affiliation(s)
- Hye Jung Park
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine , Seoul, Republic of Korea
| | - Jung-Won Park
- Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine , Seoul, Republic of Korea
| | - Sae Hoon Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital , Seongnam, Republic of Korea
| | - So-Yun Choi
- Department of Pediatrics, Inje University Haeundae Paik Hospital , Busan, Republic of Korea
| | - Hee-Kyoo Kim
- Department of Internal Medicine, Kosin University College of Medicine , Busan, Republic of Korea
| | - Chang-Gyu Jung
- Department of Internal Medicine, Keimyung University Dongsan Medical Center , Daegu, Republic of Korea
| | - Min-Suk Yang
- Department of Internal Medicine, SMG-SNU Boramae Medical Center , Seoul, Republic of Korea
| | - Dong Yoon Kang
- Drug Safety Monitoring Center, Seoul National University Hospital , Seoul, Republic of Korea
| | - Min-Kyoung Cho
- Drug Safety Monitoring Center, Seoul National University Hospital , Seoul, Republic of Korea
| | - Hyouk-Soo Kwon
- Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine , Seoul, Republic of Korea
| | - Hye-Ryun Kang
- Drug Safety Monitoring Center, Seoul National University Hospital , Seoul, Republic of Korea.,Department of Internal Medicine, Seoul National University Hospital , Seoul, Republic of Korea
| | - Yong Won Lee
- Department of Internal Medicine, International St. Mary's Hospital, Catholic Kwandong University College of Medicine , Incheon, Republic of Korea
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Chang CJ, Chen CB, Hung SI, Ji C, Chung WH. Pharmacogenetic Testing for Prevention of Severe Cutaneous Adverse Drug Reactions. Front Pharmacol 2020; 11:969. [PMID: 32714190 PMCID: PMC7346738 DOI: 10.3389/fphar.2020.00969] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 06/15/2020] [Indexed: 12/11/2022] Open
Abstract
Severe cutaneous adverse reactions (SCAR), such as Stevens-Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and drug rash with eosinophilia and systemic symptoms (DRESS), are idiosyncratic and unpredictable drug-hypersensitivity reactions with a high-mortality rate ranging from 10% to over 30%, thus causing a major burden on the healthcare system. Recent pharmacogenomic studies have revealed strong associations between SCAR and the genes encoding human-leukocyte antigens (HLAs) or drug-metabolizing enzymes. Some of pharmacogenetic markers have been successfully applied in clinical practice to protect patients from SCAR, such as HLA-B*15:02 and HLA-A*31:01 for new users of carbamazepine, HLA-B*58:01 for allopurinol, and HLA-B*57:01 for abacavir. This article aims to update the current knowledge in the field of pharmacogenomics of drug hypersensitivities or SCAR, and its implementation in the clinical practice.
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Affiliation(s)
- Chih-Jung Chang
- Department of Dermatology and Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Linkou, Taipei and Keelung, Taiwan.,Central Research Laboratory, Department of Dermatology and Xiamen Chang Gung Allergology Consortium, Xiamen Chang Gung Hospital, School of Medicine, Huaqiao University, Xiamen, China
| | - Chun-Bing Chen
- Department of Dermatology and Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Linkou, Taipei and Keelung, Taiwan.,Central Research Laboratory, Department of Dermatology and Xiamen Chang Gung Allergology Consortium, Xiamen Chang Gung Hospital, School of Medicine, Huaqiao University, Xiamen, China.,Cancer Vaccine and Immune Cell Therapy Core Laboratory, Department of Medical Research, Chang Gung Memorial Hospital, Taoyuan, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung, Taiwan.,Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Shuen-Iu Hung
- Department of Dermatology and Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Linkou, Taipei and Keelung, Taiwan.,Cancer Vaccine and Immune Cell Therapy Core Laboratory, Department of Medical Research, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Chao Ji
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Wen-Hung Chung
- Department of Dermatology and Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Linkou, Taipei and Keelung, Taiwan.,Central Research Laboratory, Department of Dermatology and Xiamen Chang Gung Allergology Consortium, Xiamen Chang Gung Hospital, School of Medicine, Huaqiao University, Xiamen, China.,Cancer Vaccine and Immune Cell Therapy Core Laboratory, Department of Medical Research, Chang Gung Memorial Hospital, Taoyuan, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung, Taiwan.,Department of Dermatology, Beijing Tsinghua Chang Gung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China.,School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Abstract
Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are life-threatening diseases characterized by detachment of the epidermis and mucous membrane. SJS/TEN are considered to be on the same spectrum of diseases with different severities. They are classified by the percentage of skin detachment area. SJS/TEN can also cause several complications in the liver, kidneys, and respiratory tract. The pathogenesis of SJS/TEN is still unclear. Although it is difficult to diagnose early stage SJS/TEN, biomarkers for diagnosis or severity prediction have not been well established. Furthermore, optimal therapeutic options for SJS/TEN are still controversial. Several drugs, such as carbamazepine and allopurinol, are reported to have a strong relationship with a specific human leukocyte antigen (HLA) type. This relationship differs between different ethnicities. Recently, the usefulness of HLA screening before administering specific drugs to decrease the incidence of SJS/TEN has been investigated. Skin detachment in SJS/TEN skin lesions is caused by extensive epidermal cell death, which has been considered to be apoptosis via the Fas-FasL pathway or perforin/granzyme pathway. We reported that necroptosis, i.e. programmed necrosis, also contributes to epidermal cell death. Annexin A1, released from monocytes, and its interaction with the formyl peptide receptor 1 induce necroptosis. Several diagnostic or prognostic biomarkers for SJS/TEN have been reported, such as CCL-27, IL-15, galectin-7, and RIP3. Supportive care is recommended for the treatment of SJS/TEN. However, optimal therapeutic options such as systemic corticosteroids, intravenous immunoglobulin, cyclosporine, and TNF-α antagonists are still controversial. Recently, the beneficial effects of cyclosporine and TNF-α antagonists have been explored. In this review, we discuss recent advances in the pathophysiology and management of SJS/TEN.
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Affiliation(s)
- Akito Hasegawa
- Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Riichiro Abe
- Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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Gomes ESR, Marques ML, Regateiro FS. Epidemiology and Risk Factors for Severe Delayed Drug Hypersensitivity Reactions. Curr Pharm Des 2020; 25:3799-3812. [PMID: 31694518 DOI: 10.2174/1381612825666191105115346] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 10/31/2019] [Indexed: 02/07/2023]
Abstract
Severe delayed drug hypersensitivity reactions comprise different clinical entities and can involve different immune-mediated mechanisms. Common examples are severe cutaneous adverse reactions and druginduced internal organ injuries. The incidence of such reactions is overall low but seems to be on the rise reaching numbers as high as 9 per million individuals-years in the case of SJS/TEN and DRESS. Such conditions carry an important associated morbidity, and mortality can attain 40% in SJS/TEN patients, making these hypersensitivity reactions important targets when implementing preventive measures. Several risk factors have been identified for reaction severity; some are transverse, such as older age and underlying chronic diseases. The recent advances in pharmacogenetics allowed the identification of specific populations with higher risk and permitted strategic avoidance of certain drugs being HLA-B*57:01 screening in patients initiating abacavir the best successful example. In this work, we reviewed the epidemiology of SCARs and liver/kidney/lung drug-induced immune-mediated reactions. We focus on particular aspects such as prevalence and incidence, drugs involved, mortality and risk factors.
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Affiliation(s)
- Eva S R Gomes
- Allergy and Clinical Immunology Department, Centro Hospitalar e Universitario do Porto, Porto, Portugal
| | - Maria L Marques
- Allergy and Clinical Immunology Department, Centro Hospitalar e Universitario do Porto, Porto, Portugal
| | - Frederico S Regateiro
- Allergy and Clinical Immunology Department, Centro Hospitalar e Universitario de Coimbra, Coimbra, Portugal.,Institute of Immunology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,Coimbra Institute for Clinical and Biomedical Reseach (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
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46
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Mitra-Ghosh T, Callisto SP, Lamba JK, Remmel RP, Birnbaum AK, Barbarino JM, Klein TE, Altman RB. PharmGKB summary: lamotrigine pathway, pharmacokinetics and pharmacodynamics. Pharmacogenet Genomics 2020; 30:81-90. [PMID: 32187155 DOI: 10.1097/FPC.0000000000000397] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Maliepaard M, Taams AC, Sung C, Poh J, Yu Y. Ethnicity-Specific Drug Safety Data in European Medicines Agency Registration Dossiers, European Public Assessment Reports, and European and Singapore Drug Labels: Lost in Translation? Pharmaceut Med 2020; 33:407-416. [PMID: 31933229 DOI: 10.1007/s40290-019-00302-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Information on drug safety in different ethnic populations reported in public documents such as the European Public Assessment Reports (EPARs), European Summary of Product Characteristics (SmPCs) or Singapore Package Inserts (SGPIs) generally appears limited. OBJECTIVE This study aimed to clarify the extent of drug safety data in ethnic populations that is available in drug registration dossiers used for registration in the European Union (EU) and Singapore, and how much of this information is then included in the EPARs and SmPCs or SGPIs. METHODS For this purpose, drug registration dossiers and these public documents for a selection of 25 drugs authorized both in the EU and Singapore were compared (note, the number of available full registration dossiers was only 24 due to a technical issue). RESULTS Detailed safety data in ethnic groups were present in 23/24 (96%) of the drug registration dossiers, but was only present in 12/25 (48%) of the EPARs, 8/25 (32%) of the SmPCs, and 9/25 (36%) of the SGPIs. Furthermore, in many cases where ethnicity-specific safety information was provided in the SmPC or SGPIs, details on the ethnic subpopulations was not provided. CONCLUSIONS Despite the fact that safety data analyzed with respect to ethnic populations are available in almost all screened registration dossiers, this information is often unknown to patients or prescribers as it was often not included in the EPARs, EU SmPCs or SGPIs. In order to increase the availability of such potentially important safety information, it is recommended to at least provide ethnic populations and group size in these public documents. In this way, trust in the registered drugs in different ethnic populations may be increased, and more robust treatment decisions may be obtained in clinical practice.
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Affiliation(s)
- Marc Maliepaard
- Medicines Evaluation Board, Utrecht, The Netherlands.
- Department of Pharmacology and Toxicology, Radboud University Medical Centre, Nijmegen, The Netherlands.
| | - Anne C Taams
- Medicines Evaluation Board, Utrecht, The Netherlands
| | - Cynthia Sung
- Vigilance and Compliance Branch, Health Sciences Authority, Singapore, Singapore
- Duke-NUS Medical School, Singapore, Singapore
| | - Jalene Poh
- Vigilance and Compliance Branch, Health Sciences Authority, Singapore, Singapore
| | - Yang Yu
- Medicines Evaluation Board, Utrecht, The Netherlands
- Department of Pharmacology and Toxicology, Radboud University Medical Centre, Nijmegen, The Netherlands
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Sung C, Tan L, Limenta M, Ganesan G, Toh D, Chan CL. Usage Pattern of Carbamazepine and Associated Severe Cutaneous Adverse Reactions in Singapore Following Implementation of HLA-B*15:02 Genotyping as Standard-of-Care. Front Pharmacol 2020; 11:527. [PMID: 32457602 PMCID: PMC7221117 DOI: 10.3389/fphar.2020.00527] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 04/03/2020] [Indexed: 11/13/2022] Open
Abstract
In April 2013, the Ministry of Health and Health Sciences Authority of Singapore jointly issued recommendations for HLA-B*15:02 genotyping before starting carbamazepine (CBZ) in new patients of Asian ancestry as standard of care. The Ministry of Health also approved a 75% subsidy for HLA-B*15:02 genotyping to all patients on subsidy at public healthcare institutions. To understand the impact of these regulatory decisions, we researched the usage patterns for CBZ and levetiracetam, the trend of Stevens-Johnson syndrome/toxic epidermal necrolysis [Stevens-Johnson syndrome (SJS)/toxic epidermal necrolysis (TEN)] reports associated with antiepileptic drugs and the take-up rates of HLA-B*15:02 tests in Singapore. In the 5-year post-policy period, we found that the annual number of reported SJS/TEN cases associated with all antiepileptic drugs was significantly decreased by 57% (p = 0.015); SJS/TEN cases associated with CBZ and phenytoin reduced by 92% and 42% respectively. New CBZ users decreased by 31% while new levetiracetam users approximately doubled. The annual number of HLA-B*15:02 tests conducted increased from 444 to approximately 1,200. Regulatory recommendations for HLA-B*15:02 genotyping as standard of care coupled with government subsidy for the test had contributed to a reduction in CBZ SJS/TEN in Singapore by >90%, in line with that observed in other Asian countries with similar policies. Additionally, the number of phenytoin-SJS/TEN cases also declined. Taken together, this represents a successful example of precision medicine through implementation of a genotyping program to reduce a rare but serious adverse drug reaction among at-risk individuals, while preserving the availability of an effective and low-cost medicine for the broader population.
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Affiliation(s)
- Cynthia Sung
- Vigilance and Compliance Branch, Health Products Regulation Group, Health Sciences Authority, Singapore, Singapore.,Health Services & Systems Research Programme, Duke-NUS Medical School, Singapore, Singapore
| | - Liesbet Tan
- Vigilance and Compliance Branch, Health Products Regulation Group, Health Sciences Authority, Singapore, Singapore
| | - Michael Limenta
- Vigilance and Compliance Branch, Health Products Regulation Group, Health Sciences Authority, Singapore, Singapore
| | - Ganga Ganesan
- Policy Research and Evaluation Division, Ministry of Health, Singapore, Singapore
| | - Dorothy Toh
- Vigilance and Compliance Branch, Health Products Regulation Group, Health Sciences Authority, Singapore, Singapore
| | - Cheng Leng Chan
- Vigilance and Compliance Branch, Health Products Regulation Group, Health Sciences Authority, Singapore, Singapore
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Nishida T, Lee SK, Wu T, Tiamkao S, Dash A. Efficacy and safety of perampanel in generalized and focal to bilateral tonic-clonic seizures: A comparative study of Asian and non-Asian populations. Epilepsia 2020; 60 Suppl 1:47-59. [PMID: 30869168 DOI: 10.1111/epi.14644] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 12/13/2018] [Accepted: 12/18/2018] [Indexed: 11/27/2022]
Abstract
Perampanel is an approved adjunctive treatment for focal seizures with or without focal to bilateral tonic-clonic (FBTC) seizures and generalized tonic-clonic (GTC) seizures. We compared efficacy and safety of perampanel vs placebo in Asian and non-Asian populations in a post hoc analysis of pooled data from 5 randomized phase 3 studies. Patients (≥12 years old) with focal + FBTC seizures received perampanel 2, 4, 8, or 12 mg or placebo; patients with GTC seizures received perampanel 8 mg or placebo (titration: 4-6 weeks; maintenance: 13 weeks). Efficacy endpoints included median percentage change in FBTC or GTC seizure frequency per 28 days and 50% responder rate relative to baseline. Median percentage change in FBTC seizure frequency was significantly greater for perampanel 8 and 12 mg than placebo in the Asian population (median difference from placebo: -30.32%, P = 0.0017; -30.06%, P = 0.0008, respectively) and perampanel 4, 8, and 12 mg in the non-Asian population (-35.07%, P = 0.0001; -37.78%, P < 0.0001; -34.53%, P < 0.0001, respectively). In both populations, median percentage change in GTC seizure frequency was significantly greater for perampanel 8 mg than placebo (median difference from placebo: Asian, -37.37%, P = 0.0139; non-Asian, -27.04%, P = 0.0006). The 50% responder rates were significantly greater than placebo for perampanel 8 and 12 mg for FBTC seizures (Asian: 58.0%, P = 0.0017 and 58.6%, P = 0.0013, respectively; non-Asian: 59.3%, P < 0.0001 and 54.3%, P = 0.0050, respectively) and perampanel 8 mg for GTC seizures (Asian: 57.6%, P = 0.0209; non-Asian: 68.8%, P = 0.0329). Pooled FBTC/GTC seizure data showed generally similar patterns of response to perampanel in both populations. The most frequent treatment-related adverse events were fatigue, irritability, dizziness, somnolence, and headache. Perampanel was effective, well tolerated, and can be considered a therapeutic option for FBTC/GTC seizures in Asian populations.
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Affiliation(s)
- Takuji Nishida
- National Epilepsy Center, Shizuoka Institute of Epilepsy and Neurological Disorders, National Hospital Organization, Shizuoka, Japan
| | - Sang Kun Lee
- Department of Neurology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Tony Wu
- Department of Neurology, Chang Gung Memorial Hospital and University, Taoyuan City, Taiwan
| | - Somsak Tiamkao
- Department of Medicine, Faculty of Medicine, Integrated Epilepsy Research Group, Khon Kaen University, Khon Kaen, Thailand
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