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Collins KS, Raviele ALJ, Elchynski AL, Woodcock AM, Zhao Y, Cooper-DeHoff RM, Eadon MT. Genotype-Guided Hydralazine Therapy. Am J Nephrol 2020; 51:764-776. [PMID: 32927458 DOI: 10.1159/000510433] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 07/24/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND Despite its approval in 1953, hydralazine hydrochloride continues to be used in the management of resistant hypertension, a condition frequently managed by nephrologists and other clinicians. Hydralazine hydrochloride undergoes metabolism by the N-acetyltransferase 2 (NAT2) enzyme. NAT2 is highly polymorphic as approximately 50% of the general population are slow acetylators. In this review, we first evaluate the link between NAT2 genotype and phenotype. We then assess the evidence available for genotype-guided therapy of hydralazine, specifically addressing associations of NAT2 acetylator status with hydralazine pharmacokinetics, antihypertensive efficacy, and toxicity. SUMMARY There is a critical need to use hydralazine in some patients with resistant hypertension. Available evidence supports a significant link between genotype and NAT2 enzyme activity as 29 studies were identified with an overall concordance between genotype and phenotype of 92%. The literature also supports an association between acetylator status and hydralazine concentration, as fourteen of fifteen identified studies revealed significant relationships with a consistent direction of effect. Although fewer studies are available to directly link acetylator status with hydralazine antihypertensive efficacy, the evidence from this smaller set of studies is significant in 7 of 9 studies identified. Finally, 5 studies were identified which support the association of acetylator status with hydralazine-induced lupus. Clinicians should maintain vigilance when prescribing maximum doses of hydralazine. Key Messages: NAT2 slow acetylator status predicts increased hydralazine levels, which may lead to increased efficacy and adverse effects. Caution should be exercised in slow acetylators with total daily hydralazine doses of 200 mg or more. Fast acetylators are at risk for inefficacy at lower doses of hydralazine. With appropriate guidance on the usage of NAT2 genotype, clinicians can adopt a personalized approach to hydralazine dosing and prescription, enabling more efficient and safe treatment of resistant hypertension.
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Affiliation(s)
- Kimberly S Collins
- Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Anthony L J Raviele
- Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Amanda L Elchynski
- Department of Pharmacotherapy and Translational Research, University of Florida, Gainesville, Florida, USA
| | - Alexander M Woodcock
- Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Yang Zhao
- Department of Pharmacotherapy and Translational Research, University of Florida, Gainesville, Florida, USA
| | - Rhonda M Cooper-DeHoff
- Department of Pharmacotherapy and Translational Research, University of Florida, Gainesville, Florida, USA
| | - Michael T Eadon
- Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA,
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Yang S, Hwang SJ, Park JY, Chung EK, Lee JI. Association of genetic polymorphisms of CYP2E1, NAT2, GST and SLCO1B1 with the risk of anti-tuberculosis drug-induced liver injury: a systematic review and meta-analysis. BMJ Open 2019; 9:e027940. [PMID: 31375612 PMCID: PMC6688699 DOI: 10.1136/bmjopen-2018-027940] [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: 01/29/2023] Open
Abstract
OBJECTIVES The objective of this study was to investigate the association between genetic polymorphisms of N-acetyltransferase 2 (NAT2), cytochrome P450 2E1 (CYP2E1), glutathione S-transferase (GST) and solute carrier organic anion transporter family member 1B1 (SLCO1B1) and the risk of anti-tuberculosis drug-induced liver injury (ATDILI). DESIGN Systematic review and meta-analysis. DATA SOURCES PubMed, Embase, Web of Science and Cochrane Reviews databases were searched through April 2019. ELIGIBILITY CRITERIA We included case-control or cohort studies investigating an association between NAT2, CYP2E1, GST or SLCO1B1 polymorphisms and the ATDILI risk in patients with tuberculosis. DATA EXTRACTION AND SYNTHESIS Three authors screened articles, extracted data and assessed study quality. The strength of association was evaluated for each gene using the pooled OR with a 95% CI based on the fixed-effects or random-effects model. Sensitivity analysis was performed to confirm the reliability and robustness of the results. RESULTS Fifty-four studies were included in this analysis (n=26 for CYP2E1, n=35 for NAT2, n=19 for GST, n=4 for SLCO1B1). The risk of ATDILI was significantly increased with the following genotypes: CYP2E1 RsaI/PstI c1/c1 (OR=1.39, 95% CI 1.06 to 1.83), NAT2 slow acetylator (OR=3.30, 95% CI 2.65 to 4.11) and GSTM1 null (OR=1.30, 95% CI 1.12 to 1.52). No significant association with ATDILI was found for the genetic polymorphisms of CYP2E1 DraI, GSTT1, GSTM1/GSTT1, SLCO1B1 388A>G and SLCO1B1 521T>C (p>0.05). CONCLUSIONS ATDILI is more likely to occur in patients with NAT2 slow acetylator genotype, CYP2E1 RsaI/PstI c1/c1 genotype and GSTM1 null genotype. Close monitoring may be warranted for patients with these genotypes.
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Affiliation(s)
- Seungwon Yang
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Science, Yonsei University, Incheon, Republic of Korea
| | - Se Jung Hwang
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
| | - Jung Yun Park
- College of Pharmacy, Seoul National University, Seoul, Republic of Korea
| | - Eun Kyoung Chung
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
- Department of Pharmacy, Kyung Hee University Hospital at Gangdong, Seoul, Republic of Korea
| | - Jangik I Lee
- College of Pharmacy, Seoul National University, Seoul, Republic of Korea
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea
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Richardson M, Kirkham J, Dwan K, Sloan DJ, Davies G, Jorgensen AL. NAT2 variants and toxicity related to anti-tuberculosis agents: a systematic review and meta-analysis. Int J Tuberc Lung Dis 2019; 23:293-305. [PMID: 30871660 PMCID: PMC6421944 DOI: 10.5588/ijtld.18.0324] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 08/08/2018] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Tuberculosis (TB) patients receiving anti-tuberculosis treatment may experience serious adverse drug reactions (ADRs) such as hepatotoxicity. Variants of the N-acetyltransferase 2 (NAT2) gene may increase the risk of experiencing such toxicity events. OBJECTIVE To provide a comprehensive evaluation of the evidence base for associations between NAT2 variants and anti-tuberculosis drug-related toxicity. METHOD This was a systematic review and meta-analysis. We searched for studies in Medline, PubMed, EMBASE, BIOSIS and Web of Science. We included data from 41 articles (39 distinct cohorts of patients). We pooled effect estimates for each genotype on each outcome using meta-analyses stratified by country. RESULTS We assessed the quality of the included studies, which was variable, with many areas of concern. Slow/intermediate NAT2 acetylators were statistically significantly more likely to experience hepatotoxicity than rapid acetylators (OR 1.59, 95%CI 1.26-2.01). Heterogeneity was not detected in the overall pooled analysis (I² = 0%). NAT2 acetylator status was significantly associated with the likelihood of experiencing anti-tuberculosis drug-related hepatotoxicity. CONCLUSION We encountered several challenges in performing robust syntheses of data from pharmacogenetic studies, and we outline recommendations for the future reporting of pharmacogenetic studies to enable high-quality systematic reviews and meta-analyses to be performed.
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Affiliation(s)
- M Richardson
- Department of Biostatistics, University of Liverpool, Liverpool
| | - J Kirkham
- Department of Biostatistics, University of Liverpool, Liverpool
| | - K Dwan
- Cochrane Editorial Unit, London
| | - D J Sloan
- School of Medicine, University of St Andrews, St Andrews
| | - G Davies
- Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, UK
| | - A L Jorgensen
- Department of Biostatistics, University of Liverpool, Liverpool
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4
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Zhang M, Wang S, Wilffert B, Tong R, van Soolingen D, van den Hof S, Alffenaar JW. The association between the NAT2 genetic polymorphisms and risk of DILI during anti-TB treatment: a systematic review and meta-analysis. Br J Clin Pharmacol 2018; 84:2747-2760. [PMID: 30047605 PMCID: PMC6256008 DOI: 10.1111/bcp.13722] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 07/11/2018] [Accepted: 07/20/2018] [Indexed: 12/13/2022] Open
Abstract
AIMS The aim of this study is to evaluate the potential association between N-acetyltransferase type 2 (NAT2) polymorphisms and drug-induced liver injury during anti-TB treatment (AT-DILI). METHODS We conducted a systematic review and performed a meta-analysis to clarify the role of NAT2 polymorphism in AT-DILI. PubMed, Medline and EMBASE databases were searched for studies published in English to December 31, 2017, on the association between the NAT2 polymorphism and AT-DILI risk. Outcomes were pooled with random-effects meta-analysis. Details were registered in the PROSPERO register (number: CRD42016051722). RESULTS Thirty-seven studies involving 1527 cases and 7184 controls were included in this meta-analysis. The overall odds ratio (OR) of AT-DILI associated with NAT2 slow acetylator phenotype was 3.15 (95% CI 2.58-3.84, I2 = 51.3%, P = 0.000). The OR varied between different ethnic populations, ranging from 6.42 (95% CI 2.41-17.10, I2 = 2.3%) for the West Asian population to 2.32 (95% CI 0.58-9.24, I2 = 80.3%) for the European population. Within the slow NAT2 genotype, variation was also observed; NAT2*6/*7 was associated with the highest risk of AT-DILI (OR = 1.68, 95% CI 1.09-2.59) compared to the other slow NAT2 acetylators combined. CONCLUSIONS NAT2 slow acetylation was observed to increase the risk of AT-DILI in tuberculosis patients. Our results support the hypothesis that the slow NAT2 genotype is a risk factor for AT-DILI.
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Affiliation(s)
- Min Zhang
- Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, China.,University of Groningen, University Medical Center Groningen, Department of Clinical Pharmacy and Pharmacology, Groningen, The Netherlands
| | - Shuqiang Wang
- University of Groningen, University Medical Center Groningen, Department of Clinical Pharmacy and Pharmacology, Groningen, The Netherlands.,Department of Infectious Diseases, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, China
| | - Bob Wilffert
- University of Groningen, University Medical Center Groningen, Department of Clinical Pharmacy and Pharmacology, Groningen, The Netherlands.,Department of Pharmacotherapy, -Epidemiology, & -Economics, Groningen Research Institute of Pharmacy, University of Groningen, Groningen, The Netherlands
| | - Rongsheng Tong
- Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, China.,Personalized Drug Therapy Key Laboratory of Sichuan Province
| | - Dick van Soolingen
- Tuberculosis Reference Laboratory, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands.,Department of Medical Microbiology, Radboud University Medical Centre, Nijmegen, The Netherlands
| | | | - Jan-Willem Alffenaar
- University of Groningen, University Medical Center Groningen, Department of Clinical Pharmacy and Pharmacology, Groningen, The Netherlands
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5
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NAT2 variants are associated with drug-induced liver injury caused by anti-tuberculosis drugs in Indonesian patients with tuberculosis. J Hum Genet 2016; 61:533-7. [DOI: 10.1038/jhg.2016.10] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 12/31/2015] [Accepted: 01/19/2016] [Indexed: 11/08/2022]
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Shi J, Xie M, Wang J, Xu Y, Liu X. Susceptibility of N-acetyltransferase 2 slow acetylators to antituberculosis drug-induced liver injury: a meta-analysis. Pharmacogenomics 2015; 16:2083-97. [PMID: 26616266 DOI: 10.2217/pgs.15.144] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM This study aimed to evaluate the association between N-acetyltransferase 2 (NAT2) gene polymorphisms and the risk of antituberculosis drug-induced liver injury (ATLI). MATERIALS & METHODS A meta-analysis was performed including 27 studies with 1289 cases and 5462 controls. Odds ratio with 95% CI was used to evaluate the strength of association. RESULTS Our meta-analysis found that NAT2 slow acetylators were associated with increased risk of ATLI compared with fast and intermediate acetylators when standard dose of isoniazid was administrated (odds ratio: 3.08; 95% CI: 2.29-4.15). CONCLUSION Individuals with NAT2 slow acetylators may have increased risk of ATLI when standard dose of isoniazid was used. Detection of NAT2 genotype may benefit to the prevention of ATLI.
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Affiliation(s)
- Jing Shi
- Department of Respiration & Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430030, China
| | - Min Xie
- Department of Respiration & Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430030, China
| | - Jianmiao Wang
- Department of Respiration & Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430030, China
| | - Yongjian Xu
- Department of Respiration & Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430030, China
| | - Xiansheng Liu
- Department of Respiration & Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430030, China
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Fluegge KR, Roe BE. A comparative effectiveness analysis of treatment for latent tuberculosis infection using multilevel selection models. J Comp Eff Res 2015; 4:239-257. [PMID: 25965321 DOI: 10.2217/cer.15.3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM Nine months of isoniazid (9INH) is the gold standard for treatment of latent tuberculosis infection (LTBI). This paper compares the effectiveness of 9 months of isoniazid with 4 months of transitional rifampin (9H4R) to alternative therapies, including 9INH, 6 months of isoniazid (6INH) and 6 months of isoniazid with 4 months of transitional rifampin (6H4R), for treatment of LTBI. MATERIALS & METHODS Using an ethnically diverse clinic sample of 552 patients given treatment for LTBI with 9H4R, we use multilevel selection models to examine the adjusted comparative effectiveness of the regimens among ethnic groups that feature distinct genetic predispositions to side effects on INH. For unadjusted/absolute effectiveness, we simulated cost-effectiveness ratios for 4 months of rifampin (4RIF) and compared with bootstrapped confidence intervals for the alternative therapies. RESULTS There are variations in the comparative effectiveness across ethnic groups, with the most notable differences for 9H4R. For unadjusted/absolute effectiveness, 4RIF presents the greatest net benefit for US born black and African patients. For all other ethnic groups, 6H4R was the most effective. CONCLUSION Patient ethnicity affects tolerance to INH. 9H4R was the most effective LTBI treatment for all ethnicities. However, this result heavily depends on whether adjustments are made for self-selection.
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Affiliation(s)
- Kyle R Fluegge
- Department of Agricultural, Environmental & Development Economics, Ohio State University, 2120 Fyffe Road, Columbus, OH 43210, USA.,Division of Epidemiology, College of Public Health, Ohio State University, 2120 Fyffe Road, Columbus, OH 43210, USA.,Institute for Health & Environmental Research, Columbus, OH 43220, USA.,Department of Epidemiology & Biostatistics, Case Western Reserve University, 2103 Cornell Road, Cleveland, OH 44106, USA
| | - Brian E Roe
- Department of Agricultural, Environmental & Development Economics, Ohio State University, 2120 Fyffe Road, Columbus, OH 43210, USA
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8
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Mukherjee A, Velpandian T, Singla M, Kanhiya K, Kabra SK, Lodha R. Pharmacokinetics of isoniazid, rifampicin, pyrazinamide and ethambutol in Indian children. BMC Infect Dis 2015; 15:126. [PMID: 25887748 PMCID: PMC4373095 DOI: 10.1186/s12879-015-0862-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 03/02/2015] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND The available pharmacokinetic data on anti-tubercular drugs in children raises the concern of suboptimal plasma concentrations attained when doses extrapolated from adult studies are used. Also, there is lack of consensus regarding the effect of malnutrition on pharmacokinetics of anti-tubercular drugs in children. We conducted this study with the aims of determining the plasma concentrations of isoniazid, rifampicin, pyrazinamide and ethambutol achieved with different dosage of the anti-tubercular drugs so as to provide supportive evidence to the revised dosages and to evaluate the effects of malnutrition on the pharmacokinetics of these drugs in children. We also attempted to correlate the plasma concentrations of these drugs with clinical outcome of therapy. METHOD Prospective drug estimation study was conducted in two groups of children, age 6 months to 15 years, with tuberculosis, with or without severe malnutrition, receiving different dosage of daily anti- tubercular therapy. The dosage (range) of isoniazid was 5 (4-6) and 10 (7-15) mg/kg in the two groups, respectively, that of rifampicin-10 (8-12) and 15 (10-12) mg/kg, respectively, both the groups received same dose of pyrazinamide (30-35 mg/kg) and ethambutol (20-25 mg/kg). All four drugs were simultaneously estimated by liquid chromatography-mass spectrometry (LC-MS/MS). RESULTS AND CONCLUSION The median (IQR) Cmax of isoniazid increased significantly from 0.6 (0.3,1.2) μg/mL to 3.4 (1.8, 5.0) μg/mL with increase in the dose. Plasma rifampicin concentrations increased only marginally on increasing the dose [median (IQR) Cmax: 10.4 (7.2, 13.9) μg/mL vs. 12.0 (6.1, 24.3) μg/mL, p=0.08]. For ethambutol, 55.9% of the children had inadequate 2-hour concentrations. Two-hour plasma concentrations of at least one drug were low in 59 (92.2%) and 54 (85.7%) children in the two dosing regimen, respectively. We did not observe any effect of malnutrition on pharmacokinetic parameters of the drugs studied. We did not observe an association between low plasma drug concentrations and poor outcome. We may have to be cautious while increasing the doses and strive to asses other factors influencing the drug concentrations and treatment outcomes in children.
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Affiliation(s)
- Aparna Mukherjee
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India.
| | - Thirumurthy Velpandian
- Department of Ocular Pharmacology, All India Institute of Medical Sciences, New Delhi, India.
| | - Mohit Singla
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India.
| | - Kunwar Kanhiya
- Department of Ocular Pharmacology, All India Institute of Medical Sciences, New Delhi, India.
| | - Sushil K Kabra
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India.
| | - Rakesh Lodha
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India.
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Negri L, Le Grusse J, Séraissol P, Lavit M, Houin G, Gandia P. [Tuberculosis: relevance of isoniazid dosage in prevention of liver side effects]. Therapie 2014; 69:509-16. [PMID: 25314930 DOI: 10.2515/therapie/2014202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 08/12/2014] [Indexed: 11/20/2022]
Abstract
OBJECTIVE Several recent studies have established a correlation between NAT2 polymorphism and hepatotoxicity induced by isoniazid. The objective of this work was to assess the place of isoniazid dosage, marker of acetylation phenotype, in clinical practice in the department of Haute-Garonne. METHODS Data from reportable disease of tuberculosis and the results of isoniazid dosage performed at the pharmacokinetics and clinical toxicology laboratory were used during the period 2009-2012. RESULTS The current practice of dosage is far from being systematical: only 3.9% of patients who developed tuberculosis have benefited from isoniazid dosage. The isoniazid initial posology was adapted to the acetylation capacity for only 33.3% of patients. CONCLUSION A decision tree was realized and used to identify populations (low metabolism) liable to benefit from isoniazid dosage.
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Affiliation(s)
- Lucie Negri
- Laboratoire de pharmacocinétique et toxicologie clinique, Hôpital Purpan, Institut fédératif de biologie (IFB), Toulouse, France
| | - Jean Le Grusse
- Centre de lutte antituberculeuse, Hôpital Joseph Ducuing, Toulouse, France
| | - Patrick Séraissol
- Laboratoire de pharmacocinétique et toxicologie clinique, Hôpital Purpan, Institut fédératif de biologie (IFB), Toulouse, France
| | - Michel Lavit
- Laboratoire de pharmacocinétique et toxicologie clinique, Hôpital Purpan, Institut fédératif de biologie (IFB), Toulouse, France
| | - Georges Houin
- Laboratoire de pharmacocinétique et toxicologie clinique, Hôpital Purpan, Institut fédératif de biologie (IFB), Toulouse, France
| | - Peggy Gandia
- Laboratoire de pharmacocinétique et toxicologie clinique, Hôpital Purpan, Institut fédératif de biologie (IFB), Toulouse, France - EA4553, Laboratoire de pharmacocinétique, Institut Claudius Regaud, Toulouse, France
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PharmGKB summary: very important pharmacogene information for N-acetyltransferase 2. Pharmacogenet Genomics 2014; 24:409-25. [PMID: 24892773 DOI: 10.1097/fpc.0000000000000062] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Ng CS, Hasnat A, Al Maruf A, Ahmed MU, Pirmohamed M, Day CP, Aithal GP, Daly AK. N-acetyltransferase 2 (NAT2) genotype as a risk factor for development of drug-induced liver injury relating to antituberculosis drug treatment in a mixed-ethnicity patient group. Eur J Clin Pharmacol 2014; 70:1079-86. [PMID: 24888881 DOI: 10.1007/s00228-014-1703-0] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2014] [Accepted: 05/22/2014] [Indexed: 12/16/2022]
Abstract
PURPOSE This study aims to assess whether NAT2 genotype affects susceptibility to moderate to severe liver injury in patients undergoing drug treatment for tuberculosis with isoniazid-containing regimens. METHODS Twenty-six patients of European or South Asian ethnicity, who had suffered liver injury during treatment with isoniazid-containing drug regimens and 101 ethnically matched controls were genotyped for the NAT2*5, NAT2*6, and NAT2*7 alleles. Genotyping for additional polymorphisms in the NAT gene region was also performed on 20 of the 26 cases. NAT2 genotype frequency between cases and controls was compared. RESULTS NAT2 genotypes predicting a slow acetylator phenotype were found to be associated with an increased risk of isoniazid-related liver injury (odds ratio (OR) = 4.25 (95% confidence interval (CI), 1.36-13.22); p = 0.012) with 85% of the cases being slow acetylators compared with 56% of the controls. There was no evidence for an increased risk for the slow acetylator genotype in patients with the most severe cases of liver injury, who underwent liver transplantation. CONCLUSIONS The NAT2 slow acetylator genotype appears to be a significant risk factor for moderate and severe drug- induced liver injury. However, the overall effect size is modest and generally in line with effects described previously for this genotype in milder drug-induced liver injury. Additional genetic risk factors may also contribute.
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Affiliation(s)
- Ching-Soon Ng
- Institute of Cellular Medicine, Newcastle University, Framlington Place, Newcastle upon Tyne, NE2 4HH, UK
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12
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Rana SV, Sharma SK, Ola RP, Kamboj JK, Malik A, Morya RK, Sinha SK. N-acetyltransferase 2, cytochrome P4502E1 and glutathione S-transferase genotypes in antitubercular treatment-induced hepatotoxicity in North Indians. J Clin Pharm Ther 2013; 39:91-6. [PMID: 24188272 DOI: 10.1111/jcpt.12105] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Accepted: 09/30/2013] [Indexed: 11/30/2022]
Abstract
WHAT IS KNOWN AND OBJECTIVE Tuberculosis (TB) is a major cause of illness and death in developing countries. Hepatotoxicity is a serious side effect of antituberculosis treatment (ATT). NAT2, CYP2E1 and glutathione S-transferase (GST) gene polymorphisms may play an important role in ATT-induced hepatotoxicity. So, elucidating the genetics involved in anti-TB drug-induced hepatotoxicity in patients would be of utmost clinical significance. Therefore, the objective of the study was to elucidate the role of NAT2, CYP2E1 and GST gene polymorphisms in ATT-induced hepatotoxicity in North Indian patients. METHODS Three hundred patients with pulmonary and extra-pulmonary TB were enrolled. Total genomic DNA was isolated from each patient's peripheral lymphocytes using phenol-chloroform method, and genetic polymorphic analysis for N-acetyltransferase 2 (NAT2), cytochrome P4502E1 (CYP2E1) and GST was performed by polymerase chain reaction (PCR) with restriction fragment length polymorphism (RFLP). RESULTS AND DISCUSSION Of the 300 patients, 185 were males and 115 females. Among them, 33 males and 22 females developed ATT-induced hepatotoxicity. There were significant increases in alanine aminotransferase, aspartate aminotransferase and bilirubin levels in patients with ATT-induced hepatotoxicity at 1 month of treatment. NAT2 5/7 and 6/7 were significantly higher in hepatotoxicity patients as compared to the non-hepatotoxicity group. c1/c1 allele of CYP2E1 gene was lower (50·9%) in ATT-induced hepatotoxicity patients as compared to non-hepatotoxicity patients (61·2%), whereas c1/c2 and c2/c2 alleles were higher, but not statistically significant. GSTM1 was significantly higher in hepatotoxicity patients as compared to non-hepatotoxicity patients, whereas GSTT1 and GSTT1/M1 were lower, but not statistically significant. WHAT IS NEW AND CONCLUSION This study indicates that patients with slow-acetylator genotypes (NAT2 5/7, 6/7) and GSTM1 allele of GST enzyme were at higher risk of ATT-induced hepatotoxicity.
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Affiliation(s)
- S V Rana
- Department of Super Specialty Gastroenterology, Post Graduate Institute of Medical Education & Research, Chandigarh, India
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Forestiero FJ, Cecon L, Hirata MH, de Melo FF, Cardoso RF, Cerda A, Hirata RDC. Relationship of NAT2, CYP2E1 and GSTM1/GSTT1 polymorphisms with mild elevation of liver enzymes in Brazilian individuals under anti-tuberculosis drug therapy. Clin Chim Acta 2013; 415:215-9. [DOI: 10.1016/j.cca.2012.10.030] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2012] [Revised: 10/14/2012] [Accepted: 10/16/2012] [Indexed: 02/03/2023]
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Slow N-acetyltransferase 2 genotype contributes to anti-tuberculosis drug-induced hepatotoxicity: a meta-analysis. Mol Biol Rep 2013; 40:3591-6. [PMID: 23277397 DOI: 10.1007/s11033-012-2433-y] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2012] [Accepted: 12/18/2012] [Indexed: 10/27/2022]
Abstract
Pathogenesis and genetic factors influencing predisposition to antituberculosis drug-induced hepatotoxicity (ATDH) are not clear. Polymorphism at the genetic locus of a drug and xenobiotic compound metabolizing enzyme, N-acetyltransferase type 2 (NAT2), is reported to be associated with the excess generation of toxic reactive metabolites. To date, many case-control studies have been carried out to investigate the relationship between the NAT2 polymorphisms and ATDH, but the results have been inconsistent. To investigate this inconsistency, a meta-analysis was performed. Databases including PubMed, Web of Science, EMBASE and CNKI were searched to find relevant studies. A total of 26 case-control studies, involving 1,198 cases and 2,921 controls were included. Overall, we found significant association between slow acetylator genotype of NAT2 and ATDH (OR = 3.10, 95% CI: 2.47-3.88, P < 10(-5)). Significant results were also found in East Asians, South Asians, Brazilians and Middle Eastern when stratified by ethnicity. However, no significant associations were found for Caucasians. This meta-analysis demonstrated that the slow acetylator genotype of NAT2 is a risk factor associated with increased ATDH susceptibility, but these associations vary in different ethnic populations.
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Cai Y, Yi J, Zhou C, Shen X. Pharmacogenetic study of drug-metabolising enzyme polymorphisms on the risk of anti-tuberculosis drug-induced liver injury: a meta-analysis. PLoS One 2012; 7:e47769. [PMID: 23082213 PMCID: PMC3474796 DOI: 10.1371/journal.pone.0047769] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Accepted: 09/20/2012] [Indexed: 11/27/2022] Open
Abstract
Background Three first-line antituberculosis drugs, isoniazid, rifampicin and pyrazinamide, may induce liver injury, especially isoniazid. This antituberculosis drug-induced liver injury (ATLI) ranges from a mild to severe form, and the associated mortality cases are not rare. In the past decade, many investigations have focused the association between drug-metabolising enzyme (DME) gene polymorphisms and risk for ATLI; however, these studies have yielded contradictory results. Methods PubMed, EMBASE, ISI web of science and the Chinese National Knowledge Infrastructure databases were systematically searched to identify relevant studies. A meta-analysis was performed to examine the association between polymorphisms from 4 DME genes (NAT2, CYP2E1, GSTM1 and GSTT1) and susceptibility to ATLI. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated. Heterogeneity among articles and their publication bias were also tested. Results 38 studies involving 2,225 patients and 4,906 controls were included. Overall, significantly increased ATLI risk was associated with slow NAT2 genotype and GSTM1 null genotype when all studies were pooled into the meta-analysis. Significantly increased risk was also found for CYP2E1*1A in East Asians when stratified by ethnicity. However, no significant results were observed for GSTT1. Conclusions Our results demonstrated that slow NAT2 genotype, CYP2E1*1A and GSTM1 null have a modest effect on genetic susceptibility to ATLI.
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Affiliation(s)
- Yu Cai
- Department of Gastroenterology, Zhongshan Hospital, Fudan Unversity, Shanghai, People’s Republic of China
| | - JiaYong Yi
- Departments of Orthopedics, Zhongshan Hospital, Fudan Unversity, Shanghai, People’s Republic of China
| | - ChaoHui Zhou
- Department of Gastroenterology, Zhongshan Hospital, Fudan Unversity, Shanghai, People’s Republic of China
- * E-mail:
| | - XiZhong Shen
- Department of Gastroenterology, Zhongshan Hospital, Fudan Unversity, Shanghai, People’s Republic of China
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