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Venkatraman S, Ramasamy K, Nair PP. Genetic polymorphisms of microsomal epoxide hydrolase and UDP-glucuronosyltransferase (UGT) and its effects on plasma carbamazepine levels and metabolic ratio in persons with epilepsy of South India: A cross-sectional genetic association study. Indian J Pharmacol 2023; 55:149-154. [PMID: 37555408 PMCID: PMC10501538 DOI: 10.4103/ijp.ijp_228_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 07/04/2023] [Accepted: 07/04/2023] [Indexed: 08/10/2023] Open
Abstract
OBJECTIVES Carbamazepine (CBZ), an anti-seizure drug, is widely prescribed for the management of focal seizures. At a given therapeutic dose, CBZ exhibits marked interindividual variation in the plasma CBZ levels. The aim wasto study the influence of EPHX1 c.337 T>C and UGT2B7*2 genetic polymorphisms on plasma carbamazepine (CBZ) levels in persons with epilepsy (PWE) from South India. METHODS 115 PWE belong to South India origin who are on carbamazepine monotherapy were recruited. Genotyping of the two variants weredone using RT-PCR method. PWE who had seizure freedom for one year and their last dose which was not changed for one year duration were included and their plasma levels of CBZ and its active metabolite CBZ 10,11 epoxide were analysed by reverse phase HPLC. RESULTS In EPHX1 c. 337 (T>C) polymorphism, the PWE carrying CC had lower plasma CBZ levels when compared to CT genotype (2.45 μg/ml vs 3.15 μg/ml. In UGT2B7*2, PWE carrying homozygous mutant TT had higher levels when compared with CT (3.09 μg/ml vs 2.74 μg/ml) genotype but found no statistical significance. Mutant genotype of EPHX1 (CC) had higher metabolic ratio compared to TT genotype (1.33 vs 1.17) but not found to be statistically significant. Mutant genotype of UGT2B7*2 (TT) was found to be having lower metabolic ratio when compared with CC genotype (1.18 vs 1.35; p value =0.08). CONCLUSION PWE carrying EPHX1 c.337 T>C (rs1051740) and UGT2B7*2 (rs7439366) genetic polymorphisms did not affect the plasma CBZ levels and metabolic ratio of PWE of South Indian origin. However, this finding should be confirmed in a larger sample size which may help in optimization and personalized CBZ therapy in South Indians.
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Affiliation(s)
- Shravan Venkatraman
- Department of Clinical Pharmacology, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
| | - Kesavan Ramasamy
- Department of Pharmacology, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
| | - Pradeep Pankajakshan Nair
- Department of Neurology, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
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Venkatraman S, Ramasamy K, Nair PP, Rajendran P. Influence of EPHX1 c.337 T>C and UGT2B7*2 genetic polymorphisms on the requirement of carbamazepine maintenance dose in person with epilepsy (PWE) of Southern part of India: a cross-sectional genetic association study. Drug Metab Pers Ther 2023:dmdi-2022-0157. [PMID: 36853909 DOI: 10.1515/dmpt-2022-0157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 12/12/2022] [Indexed: 03/01/2023]
Abstract
OBJECTIVES Carbamazepine (CBZ) is a first-line antiseizure drug used for focal onset seizures. It exhibits inter-individual variability in plasma carbamazepine levels and there are both genetic and non-genetic factors having a role in the requirement of CBZ maintenance dose. The aim was to study the influence of EPHX1 c.337 T>C and UGT2B7*2 genetic polymorphisms on CBZ maintenance dose requirement in persons with epilepsy. METHODS Persons with epilepsy (PWE) of both gender of age 15-65 years on carbamazepine monotherapy who had been taking same maintenance dose for one year were eligible. Five milliliter of venous blood was collected in 10% EDTA under aseptic precautions. After centrifugation, the cellular component was used for DNA extraction and genotyping. For three genotypes of EPHX1 c.337 T>C and UGT2B7*2, the differences in mean carbamazepine dose were analyzed using Analysis of Variance (ANOVA). An unpaired t-test was used to draw a comparison between the genotypes and CBZ maintenance dose requirement for dominant and recessive models of EPHX1 c.337 T>C and UGT2B7*2. A value of p<0.05 was considered to be statistically significant. RESULTS For UGT2B7*2 (rs 7439366), CT required a higher dose (CT 626 mg/day and TT 523 mg/day) but not found to be significant (p-value 0.167). PWE carrying CT genotype of EPHX1 c.337 T>C had 62 mg higher dose when compared to homozygous mutant CC (590 mg/day for CT and 528 mg/day for CC) but p-value was not found to be significant (p-value 0.835). CONCLUSIONS The results of our study done in 115 PWE showed there was a lack of association between SNPs of EPHX1 c.337 T>C, UGT2B7*2 and CBZ maintenance dose requirement in Southern part of India and this finding has to be confirmed in a larger sample size.
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Affiliation(s)
| | - Kesavan Ramasamy
- Department of Pharmacology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
| | - Pradeep P Nair
- Department of Neurology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
| | - Priyadharsini Rajendran
- Department of Pharmacology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
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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] [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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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. PHARMACOGENOMICS & PERSONALIZED MEDICINE 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] [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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Iannaccone T, Sellitto C, Manzo V, Colucci F, Giudice V, Stefanelli B, Iuliano A, Corrivetti G, Filippelli A. Pharmacogenetics of Carbamazepine and Valproate: Focus on Polymorphisms of Drug Metabolizing Enzymes and Transporters. Pharmaceuticals (Basel) 2021; 14:204. [PMID: 33804537 PMCID: PMC8001195 DOI: 10.3390/ph14030204] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 02/24/2021] [Accepted: 02/25/2021] [Indexed: 12/18/2022] Open
Abstract
Pharmacogenomics can identify polymorphisms in genes involved in drug pharmacokinetics and pharmacodynamics determining differences in efficacy and safety and causing inter-individual variability in drug response. Therefore, pharmacogenomics can help clinicians in optimizing therapy based on patient's genotype, also in psychiatric and neurological settings. However, pharmacogenetic screenings for psychotropic drugs are not routinely employed in diagnosis and monitoring of patients treated with mood stabilizers, such as carbamazepine and valproate, because their benefit in clinical practice is still controversial. In this review, we summarize the current knowledge on pharmacogenetic biomarkers of these anticonvulsant drugs.
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Affiliation(s)
- Teresa Iannaccone
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (T.I.); (V.M.); (F.C.); (V.G.); (B.S.); (A.I.); (A.F.)
| | - Carmine Sellitto
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (T.I.); (V.M.); (F.C.); (V.G.); (B.S.); (A.I.); (A.F.)
- Clinical Pharmacology and Pharmacogenetics Unit, University Hospital “San Giovanni di Dio e Ruggi d’Aragona”, 84131 Salerno, Italy
| | - Valentina Manzo
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (T.I.); (V.M.); (F.C.); (V.G.); (B.S.); (A.I.); (A.F.)
- Clinical Pharmacology and Pharmacogenetics Unit, University Hospital “San Giovanni di Dio e Ruggi d’Aragona”, 84131 Salerno, Italy
| | - Francesca Colucci
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (T.I.); (V.M.); (F.C.); (V.G.); (B.S.); (A.I.); (A.F.)
| | - Valentina Giudice
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (T.I.); (V.M.); (F.C.); (V.G.); (B.S.); (A.I.); (A.F.)
| | - Berenice Stefanelli
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (T.I.); (V.M.); (F.C.); (V.G.); (B.S.); (A.I.); (A.F.)
| | - Antonio Iuliano
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (T.I.); (V.M.); (F.C.); (V.G.); (B.S.); (A.I.); (A.F.)
| | - Giulio Corrivetti
- European Biomedical Research Institute of Salerno (EBRIS), 84125 Salerno, Italy;
| | - Amelia Filippelli
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (T.I.); (V.M.); (F.C.); (V.G.); (B.S.); (A.I.); (A.F.)
- Clinical Pharmacology and Pharmacogenetics Unit, University Hospital “San Giovanni di Dio e Ruggi d’Aragona”, 84131 Salerno, Italy
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Alrabadi NN, Al-Eitan LN, Al-Dalalah IM, Elshammari AK, Khreisat WH, Al-Quasmi MN, Aman HA, Mustafa MM, Qawasmeh MA. WITHDRAWN: Evaluation of the factors that may contribute to the responsiveness of anti-epileptic treatments in pediatric patients, a study from Jordan. Neurosci Res 2020:S0168-0102(20)30504-6. [PMID: 33387564 DOI: 10.1016/j.neures.2020.07.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 07/15/2020] [Indexed: 11/15/2022]
Abstract
This article has been withdrawn at the request of the editor and publisher. The publisher regrets that an error occurred which led to the publication of this paper, which had been rejected by the editor. This error bears no reflection on the editor. The publisher apologizes to the authors, editor and the readers for this unfortunate error. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/policies/article-withdrawal.
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Affiliation(s)
- Nasr N Alrabadi
- Department of Pharmacology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, 22110, Jordan.
| | - Laith N Al-Eitan
- Department of Applied Biological Sciences, Jordan University of Science and Technology, Irbid, 22110, Jordan; Department of Biotechnology and Genetic Engineering, Jordan University of Science and Technology, Irbid, 22110, Jordan.
| | - Islam M Al-Dalalah
- Department of Applied Biological Sciences, Jordan University of Science and Technology, Irbid, 22110, Jordan
| | - Afrah K Elshammari
- Queen Rania Hospital for Children, King Hussein Medical Centre, Royal Medical Services (RMS), Amman, 11118, Jordan
| | - Wael H Khreisat
- Queen Rania Hospital for Children, King Hussein Medical Centre, Royal Medical Services (RMS), Amman, 11118, Jordan
| | - Mohammed N Al-Quasmi
- Department of Medical Laboratory, King Abdullah University Hospital, Irbid, 22110, Jordan
| | - Hatem A Aman
- Department of Applied Biological Sciences, Jordan University of Science and Technology, Irbid, 22110, Jordan
| | - Mohamed M Mustafa
- Department of Neuroscience, Jordan University of Science and Technology, Irbid, 22110, Jordan
| | - Majdi Al Qawasmeh
- Department of Neuroscience, Jordan University of Science and Technology, Irbid, 22110, Jordan
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Yang Z, Yin Q, Li X. Influences of UGT2B7 rs7439366 and rs12233719 Polymorphisms on Fentanyl Sensitivity in Chinese Gynecologic Patients. Med Sci Monit 2020; 26:e924153. [PMID: 32401749 PMCID: PMC7245057 DOI: 10.12659/msm.924153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Background This study discussed potential influences of UDP glucuronosyltransferase family 2 member B7 (UGT2B7) rs7439366 and rs12233719 polymorphisms on fentanyl sensitivity among Chinese gynecologic patients. Material/Methods UGT2B7 polymorphisms were genotyped by polymerase chain reaction (PCR) and direct sequencing. Before surgery, baseline latency to pain perception (PPLpre) and pain perception latency of the dominant hand (PPLpost) at 3 minutes after injecting fentanyl were measured by cold pressor-induced pain test. Perioperative fentanyl adoption referred to the total of fentanyl administration during and after operation. Intensity of spontaneous pain was appraised adopting 100-mm visual analog scale (VAS). Factorial analysis was performed by Mann-Whitney U test and Kruskal-Wallis H test. Results Significant differences of PPLpost (CC/CT/TT, P=0.038) and preoperative analgesic effect (CC/CT/TT, P=0.028) were discovered between the rs7439366 genotypes. PPLpost was significantly different between the CT and TT groups (P=0.009) and the CC+CT and TT groups (P=0.026). Preoperative analgesic effect was significantly different between the CT and TT groups (P=0.007) and the CC+CT and TT groups (P=0.009). All of the clinical features studied had no close association with rs12233719 SNP. Conclusions Gynecologic patients with rs7439366 TT genotype had significantly lower fentanyl sensitivity than the other 2 genotype carriers.
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Affiliation(s)
- Zhenling Yang
- The Pain Management Department, The First Affiliated Hospital of Henan University, Kaifeng, Henan, China (mainland)
| | - Qingfeng Yin
- Institute of Evidence-Based Medicine and Clinical Transformation, Henan University, Kaifeng, Henan, China (mainland)
| | - Xiaodong Li
- Institutes of Evidence-Based Medicine and Knowledge Translation, Henan University, Kaifeng, Henan, China (mainland).,Huaihe Hospital of Henan University, Kaifeng, Henan, China (mainland)
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Yang X, Yan Y, Fang S, Zeng S, Ma H, Qian L, Chen X, Wei J, Gong Z, Xu Z. Comparison of oxcarbazepine efficacy and MHD concentrations relative to age and BMI: Associations among ABCB1, ABCC2, UGT2B7, and SCN2A polymorphisms. Medicine (Baltimore) 2019; 98:e14908. [PMID: 30896644 PMCID: PMC6708905 DOI: 10.1097/md.0000000000014908] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Genetic polymorphisms are related to the concentration and efficacy of oxcarbazepine (OXC). 10-Hydroxycarbazepine (MHD) is the major pharmacologically active metabolite of OXC, and it exerts an antiepileptic effect. This study aimed to explore the connection between the MHD concentration and genes such as ATP-binding cassette B1 (ABCB1), ATP-binding cassette C2 (ABCC2), UDP-glucuronosyltransferase-2B7 and sodium voltage-gated channel alpha subunit 2 (SCN2A), which participate in the antiepileptic function of OXC.Total 218 Chinese epileptic patients, were stratified into different groups according to their age, body mass index (BMI) and OXC efficacy. The genotypes of 7 single nucleotide polymorphisms in all subjects were determined by polymerase chain reaction-improved multiple ligase detection reaction assay. The MHD plasma concentration was detected by high-performance liquid chromatography and then standardized through dosage and body weight.In general, the ABCC2 rs2273697 mutant (P = .026) required a significantly higher standardized MHD concentration. For age groups, carriers of the ABCC2 rs2273697 mutant showed a significantly higher standardized MHD concentration than noncarriers in the juvenile group (P = .033). In terms of BMI, a significantly higher standardized MHD concentration was found in the ABCB1 rs2032582 mutant of the normal weight group (P = .026). The SCN2A rs17183814 mutant required a significantly higher OXC maintenance (P = .014) in the low-weight group, while lower OXC maintenance dose (P = .044) and higher standardized MHD concentration (P = .007) in the overweight group.The ABCC2 rs2273697 polymorphism was significantly associated with MHD plasma concentration in the whole patient cohort and in patients stratified by different ages, this finding provides potential theoretical guidance for the rational and safe clinical use of OXC.
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Affiliation(s)
- Xue Yang
- Department of Pharmacy
- Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders
| | - Yuanliang Yan
- Department of Pharmacy
- Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders
| | - Shu Fang
- Department of Pharmacy
- Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders
| | - Shuangshuang Zeng
- Department of Pharmacy
- Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders
| | | | - Long Qian
- Department of Pharmacy
- Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders
| | - Xi Chen
- Department of Pharmacy
- Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders
| | - Jie Wei
- Department of Pharmacy
- Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders
| | - Zhicheng Gong
- Department of Pharmacy
- Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders
| | - Zhijie Xu
- Department of Pathology, Xiangya Hospital, Central South University, China
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