scholarly journals Association analysis between adverse drug reactions to cytarabine therapy and single nucleotide polymorphisms in cytarabine metabolic genes in patients with hematopoietic tumor

2021 ◽  
Vol 10 (0) ◽  
pp. 1-6
Author(s):  
Hozumi Tashima ◽  
Yuka Endo ◽  
Naoto Okada ◽  
Shingen Nakamura ◽  
Kumiko Kagawa ◽  
...  
Keyword(s):  
Single Nucleotide Polymorphisms ◽  
Association Analysis ◽  
Adverse Drug Reactions ◽  
Nucleotide Polymorphisms ◽  
Drug Reactions ◽  
Single Nucleotide ◽  
Metabolic Genes

scholarly journals Association of Drug Metabolic Enzyme Genetic Polymorphisms and Adverse Drug Reactions in Patients Receiving Rifapentine and Isoniazid Therapy for Latent Tuberculosis

2019 ◽  
Vol 17 (1) ◽  
pp. 210 ◽  
Author(s):  
Ya-Yen Yu ◽  
Shih-Ming Tsao ◽  
Wen-Ta Yang ◽  
Wei-Chang Huang ◽  
Ching-Hsiung Lin ◽  
...  
Keyword(s):  
Single Nucleotide Polymorphisms ◽  
Genetic Polymorphisms ◽  
Adverse Drug Reactions ◽  
Odds Ratio ◽  
Latent Tuberculosis Infection ◽  
Latent Tuberculosis ◽  
Metabolic Enzyme ◽  
Nucleotide Polymorphisms ◽  
Drug Reactions ◽  
Single Nucleotide

Weekly rifapentine and isoniazid therapy (3HP) is the most frequent treatment for latent tuberculosis infection (LTBI). However, the association between major adverse drug reactions (ADRs) and drug metabolic enzyme single-nucleotide polymorphisms (SNPs) remains unclear. In this study, 377 participants who received the 3HP regimen were recruited and examined for genotyping of CYP5A6, CYP2B6, CYP2C19, CYP2E1, and NAT2 SNPs. In our study, 184 participants (48.4%) developed ADRs. Moreover, CYP2C19 rs4986893 (TT vs. CC+CT, odds ratio [OR] [95% CI]: 2.231 [1.015–4.906]), CYP2E1 rs2070676 (CC vs. CG+GG, OR [95% CI]: 1.563 [1.022–2.389]), and CYP2E1 rs2515641 (CC vs. CT+TT, OR [95% CI]: 1.903 [1.250–2.898]) were associated with ADR development. In conclusion, CYP2C19 and CYP2E1 SNPs may provide useful information regarding ADRs in LTBI patients receiving the 3HP regimen.

scholarly journals CYP2B6 Functional Variability in Drug Metabolism and Exposure Across Populations—Implication for Drug Safety, Dosing, and Individualized Therapy

2021 ◽  
Vol 12 ◽  
Author(s):  
Immaculate M. Langmia ◽  
Katja S. Just ◽  
Sabrina Yamoune ◽  
Jürgen Brockmöller ◽  
Collen Masimirembwa ◽  
...  
Keyword(s):  
Drug Therapy ◽  
Single Nucleotide Polymorphisms ◽  
Drug Metabolism ◽  
Adverse Drug Reactions ◽  
Drug Safety ◽  
Drug Efficacy ◽  
Population Variability ◽  
Nucleotide Polymorphisms ◽  
Drug Reactions ◽  
Single Nucleotide

Adverse drug reactions (ADRs) are one of the major causes of morbidity and mortality worldwide. It is well-known that individual genetic make-up is one of the causative factors of ADRs. Approximately 14 million single nucleotide polymorphisms (SNPs) are distributed throughout the entire human genome and every patient has a distinct genetic make-up which influences their response to drug therapy. Cytochrome P450 2B6 (CYP2B6) is involved in the metabolism of antiretroviral, antimalarial, anticancer, and antidepressant drugs. These drug classes are commonly in use worldwide and face specific population variability in side effects and dosing. Parts of this variability may be caused by single nucleotide polymorphisms (SNPs) in the CYP2B6 gene that are associated with altered protein expression and catalytic function. Population variability in the CYP2B6 gene leads to changes in drug metabolism which may result in adverse drug reactions or therapeutic failure. So far more than 30 non-synonymous variants in CYP2B6 gene have been reported. The occurrence of these variants show intra and interpopulation variability, thus affecting drug efficacy at individual and population level. Differences in disease conditions and affordability of drug therapy further explain why some individuals or populations are more exposed to CYP2B6 pharmacogenomics associated ADRs than others. Variabilities in drug efficacy associated with the pharmacogenomics of CYP2B6 have been reported in various populations. The aim of this review is to highlight reports from various ethnicities that emphasize on the relationship between CYP2B6 pharmacogenomics variability and the occurrence of adverse drug reactions. In vitro and in vivo studies evaluating the catalytic activity of CYP2B6 variants using various substrates will also be discussed. While implementation of pharmacogenomic testing for personalized drug therapy has made big progress, less data on pharmacogenetics of drug safety has been gained in terms of CYP2B6 substrates. Therefore, reviewing the existing evidence on population variability in CYP2B6 and ADR risk profiles suggests that, in addition to other factors, the knowledge on pharmacogenomics of CYP2B6 in patient treatment may be useful for the development of personalized medicine with regards to genotype-based prescription.

scholarly journals Association Analysis of Single Nucleotide Polymorphisms in the 5′ Regulatory Region of the IL-6 Gene with Eimeria tenella Resistance in Jinghai Yellow Chickens

Genes ◽  
2019 ◽  
Vol 10 (11) ◽  
pp. 890 ◽  
Author(s):  
Hailiang Yu ◽  
Wenbin Zou ◽  
Shijie Xin ◽  
Xiaohui Wang ◽  
Changhao Mi ◽  
...  
Keyword(s):  
Single Nucleotide Polymorphisms ◽  
Association Analysis ◽  
Direct Sequencing ◽  
Regulatory Region ◽  
Eimeria Tenella ◽  
Least Square ◽  
Bursa Of Fabricius ◽  
Control Group ◽  
Nucleotide Polymorphisms ◽  
Single Nucleotide

Interleukin 6 (IL-6) is an immunoregulatory cytokine involved in various inflammatory and immune responses. To investigate the effects of single nucleotide polymorphisms (SNPs) and haplotypes of IL-6 on resistance to Eimeria tenella (E. tenella), SNPs in the 5′ regulatory region of IL-6 were detected with direct sequencing, and the effects of SNPs and haplotypes on resistance to E. tenella were analyzed by the least square model in Jinghai yellow chickens. Nineteen SNPs were identified in the 5′ regulation region of IL-6, among which three SNPs were newly discovered. The SNP association analysis results showed that nine of the SNPs were significantly associated with E. tenella resistance indexes; the A-483G locus was significantly associated with the GSH-Px, IL-2, and IL-17 indexes (p < 0.05); the C-447G locus was significantly associated with the SOD, GSH-Px, IL-17, and IL-2 indexes (p < 0.05); and the G-357A locus had significant effects on the CAT and IL-16 indexes (p < 0.05). Haplotype analysis showed that H2H3 and H2H5 were favorable haplotype combinations with good coccidium resistance. Furthermore, we used qRT-PCR and observed that the expression of IL-6 in the infection group was higher than that in the control group in the liver, proventriculus, small intestine, thymus, kidney, and bursa of Fabricius and extremely significantly different than that in the cecum especially (p < 0.01). In summary, SNPs and haplotypes in the 5′ regulatory region of IL-6 have important effects on E. tenella resistance, and the results will provide a reference for molecular marker selection of E. tenella resistance in Jinghai yellow chickens.

Association analysis of sixty‐seven single nucleotide polymorphisms with litter size in Dazu Black goats

2019 ◽  
Vol 51 (1) ◽  
pp. 151-152 ◽  
Author(s):  
Guang‐Xin E ◽  
Dong‐Ke Zhou ◽  
Bai‐Gao Yang ◽  
Xing‐Hai Duan ◽  
Ri‐Su Na ◽  
...  
Keyword(s):  
Single Nucleotide Polymorphisms ◽  
Association Analysis ◽  
Litter Size ◽  
Nucleotide Polymorphisms ◽  
Single Nucleotide
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