Studies on N-Acetyltransferase (NAT2) Genotype Relationships in Emiratis: Confirmation of the Existence of Phenotype Variation among Slow Acetylators.

Abstract:

BACKGROUND AND PURPOSE:Individuals with slow N-acetylation phenotype often experience toxicity from drugs such as isoniazid, sulfonamides, procainamide, and hydralazine, whereas rapid acetylators may not respond to these medications. The highly polymorphic N-acetyltransferase 2 enzyme encoded by the NAT2 gene is one of the N-acetylators in humans with a clear impact on the metabolism of a significant number of important drugs. However, there are limited studies on N-acetylation phenotypes and NAT2 genotypes among Emiratis, and thus this study was carried out to fill this gap. METHODS:Five hundred seventy-six Emirati subjects were asked to consume a soft drink containing caffeine (a nontoxic and reliable probe for predicting the acetylation phenotype) and then provide a buccal swab along with a spot urine sample. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) was used to determine the genotype of each individual. Phenotyping was carried out by analyzing the caffeine metabolites using high-performance liquid chromatography (HPLC) analysis. RESULTS:We found that 78.5%, 19.1%, and 2.4% of the Emirati subjects were slow, intermediate, and rapid acetylators, respectively. In addition, we found that 77.4% of the subjects were homozygous or heterozygous for two nonreference alleles, whereas 18.4% and 4.2% were heterozygous or homozygous for the reference allele (NAT2*4), respectively. The most common genotypes found were NAT2*5B/*7B, NAT2*5B/*6A, NAT2*7B/*14B, and NAT2*4/*5B, with frequencies of 0.255, 0.135, 0.105, and 0.09, respectively. The degree of phenotype/genotype concordance was 96.2%. The NAT2*6A/*6A, NAT2*6A/*7B, NAT2*7B/*7B, and NAT2*5A/*5B genotypes were found to be associated with the lowest 5-acetylamino-6-formylamino-3-methyluracil/1-methylxanthine (AFMU/1X) ratios. CONCLUSIONS:There is a high percentage of slow acetylators among Emiratis, which correlates with the presence of nonreference alleles for the NAT2 gene. Individuals who carried NAT2*6A/*6A, NAT2*6A/*7B, NAT2*7B/*7B, or NAT2*5A/*5B genotypes might be at higher risk of toxicity with some drugs and some diseases compared to others, as these genotypes are associated with the slowest acetylation status.

journal_name

Ann Hum Genet

journal_title

Annals of human genetics

authors

Al-Ahmad MM,Amir N,Dhanasekaran S,John A,Abdulrazzaq YM,Ali BR,Bastaki S

doi

10.1111/ahg.12198

subject

Has Abstract

pub_date

2017-09-01 00:00:00

pages

190-196

issue

5

eissn

0003-4800

issn

1469-1809

journal_volume

81

pub_type

杂志文章
  • Mutation detection in Croatian patients with familial hypercholesterolemia.

    abstract::Familial hypercholesterolemia (FH) is caused by mutations in the genes for LDLR, APOB or PCSK9, and identification of the causative mutation provides definitive diagnosis so that the patient can be treated, their relatives tested and, therefore, premature heart disease prevented. DNA of eight unrelated individuals wit...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1469-1809.2012.00735.x

    authors: Pećin I,Whittall R,Futema M,Sertić J,Reiner Z,Leigh SE,Humphries SE

    更新日期:2013-01-01 00:00:00

  • Mitochondrial DNA diversity in the Polish Roma.

    abstract::Mitochondrial DNA variability in the Polish Roma population has been studied by means of hypervariable segment I and II (HVS I and II) sequencing and restriction fragment-length polymorphism analysis of the mtDNA coding region. The mtDNA haplotypes detected in the Polish Roma fall into the common Eurasian mitochondria...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1529-8817.2005.00222.x

    authors: Malyarchuk BA,Grzybowski T,Derenko MV,Czarny J,Miścicka-Sliwka D

    更新日期:2006-03-01 00:00:00

  • An extension of the regression of offspring on mid-parent to test for association and estimate locus-specific heritability: the revised ROMP method.

    abstract::The Regression of Offspring on Mid-Parent (ROMP) method is a test of association between a quantitative trait and a candidate locus. ROMP estimates the trait heritability and the heritability attributable to a locus and requires genotyping the offspring only. In this study, the theory underlying ROMP was revised (ROMP...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1469-1809.2007.00401.x

    authors: Roy-Gagnon MH,Mathias RA,Fallin MD,Jee SH,Broman KW,Wilson AF

    更新日期:2008-01-01 00:00:00

  • Developmental changes in the protein profiles of human cardiac and skeletal muscle.

    abstract::1. The use of SDS electrophoresis as a tool for the analysis of development processes in man has been evaluated. 2. The protein profiles of cardiac and skeletal muscle from foetal (10--24 weeks gestation) infant and adult specimens have been analysed and striking developmental changes were found which involved all the...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1469-1809.1978.tb00911.x

    authors: Tipler TD,Edwards YH,Hopkinson DA

    更新日期:1978-05-01 00:00:00

  • Posterior probability of linkage and maximal lod score.

    abstract::To detect linkage between a trait and a marker, Morton (1955) proposed to calculate the lod score z(theta 1) at a given value theta 1 of the recombination fraction. If z(theta 1) reaches +3 then linkage is concluded. However, in practice, lod scores are calculated for different values of the recombination fraction bet...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1469-1809.1995.tb01610.x

    authors: Génin E,Martinez M,Clerget-Darpoux F

    更新日期:1995-01-01 00:00:00

  • Phylogenetic analysis of mtDNA lineages in South American mummies.

    abstract::Some studies of mtDNA propose that contemporary Amerindians have descended from four haplotype groups, each defined by specific sets of polymorphisms. One recent study also found evidence of other potential founder haplotypes. We wanted to determine whether the four haplotypes in modern populations were also present i...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1469-1809.1996.tb01193.x

    authors: Monsalve MV,Cardenas F,Guhl F,Delaney AD,Devine DV

    更新日期:1996-07-01 00:00:00

  • Population differences in DNA sequence variation and linkage disequilibrium at the PON1 gene.

    abstract::Polymorphisms of the promoter region (-108C/T) and the coding region (192Q/R) of the paraoxonase 1 gene (PON1) showed differences in association with cardiovascular disease risk in various populations. To characterize the genetic variation underlying these important polymorphisms, we examined DNA sequence variation bo...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1046/j.1529-8817.2003.00077.x

    authors: Koda Y,Tachida H,Soejima M,Takenaka O,Kimura H

    更新日期:2004-03-01 00:00:00

  • Refined association mapping for a quantitative trait: weight in the H19-IGF2-INS-TH region.

    abstract::Previous analyses have provided evidence for one or more loci affecting body weight in the H19-IGF2-INS-TH region on chromosome 11p15. To identify the location of a possible causal locus or loci we applied association analysis by composite likelihood to a large cohort under the Malecot model for body weight. A random ...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1469-1809.2006.00290.x

    authors: Zhang W,Maniatis N,Rodriguez S,Miller GJ,Day IN,Gaunt TR,Collins A,Morton NE

    更新日期:2006-11-01 00:00:00

  • Genetic heterogeneity of Icelanders.

    abstract::Recently statements have been made about a special 'genetic homogeneity' of the Icelanders that are at variance with earlier work on blood groups and allozymes. To validate these claims an extensive reanalysis was undertaken of mtDNA variation by examining primary data from original sources on 26 European populations....

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1046/j.1469-1809.2003.00003.x

    authors: Arnason E

    更新日期:2003-01-01 00:00:00

  • Determining approximate estimates of inheritance parameters from sib-pair IBD proportions.

    abstract::The use of IBD proportions from a large set of affected sib-pair data to estimate some or all of the main parameters describing the inheritance of a disease susceptibility gene is here considered. We assume there is no recombination present and neglect ascertainment bias, and assume that there are four distinct parent...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1469-1809.1996.tb01186.x

    authors: Green JR,Shah S

    更新日期:1996-03-01 00:00:00

  • Drug addiction and stress-response genetic variability: association study in African Americans.

    abstract::Stress is a significant risk factor in the development of drug addictions and in addiction relapse susceptibility. This hypothesis-driven study was designed to determine if specific SNPs in genes related to stress response are associated with heroin and/or cocaine addiction in African Americans. The analysis included ...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/ahg.12064

    authors: Levran O,Randesi M,Li Y,Rotrosen J,Ott J,Adelson M,Kreek MJ

    更新日期:2014-07-01 00:00:00

  • Epidemiological approach to identifying genetic predispositions for atypical hemolytic uremic syndrome.

    abstract::Atypical hemolytic uremic syndrome (aHUS) is caused by several susceptibility genes. A registry including analyses of susceptibility genes, familial occurrence and genotype-phenotype correlation should provide classification insights. Registry data of 187 unrelated index patients included age at onset, gender, family ...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1469-1809.2009.00554.x

    authors: Sullivan M,Erlic Z,Hoffmann MM,Arbeiter K,Patzer L,Budde K,Hoppe B,Zeier M,Lhotta K,Rybicki LA,Bock A,Berisha G,Neumann HP

    更新日期:2010-01-01 00:00:00

  • Genomic testing and counseling: The contribution of next-generation sequencing to epilepsy genetics.

    abstract:INTRODUCTION:Currently, next-generation sequencing (NGS) technology is more accessible and available to detect the genetic causation of diseases. Though NGS technology benefited some clinical phenotypes, for some clinical diagnoses such as seizures and epileptic disorders, adaptation occurred slowly. The genetic diagno...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/ahg.12397

    authors: Alsubaie L,Aloraini T,Amoudi M,Swaid A,Eyiad W,Al Mutairi F,Ababneh F,Alrifai MT,Baarmah D,Altwaijri W,Alotaibi N,Harthi A,Rumayyan A,Alanazi A,Qrimli M,Alfadhel M,Alfares A

    更新日期:2020-11-01 00:00:00

  • Homozygous in-frame variant of SCL6A3 causes dopamine transporter deficiency syndrome in a consanguineous family.

    abstract::The human dopamine transporter (hDAT) participates in dopamine homeostasis by clearing dopamine from the extracellular space using secondary active transport. Dysregulation of hDAT has been reported to be associated with different neuropsychiatric disorders. Dopamine transporter deficiency syndrome (DTDS) is a complex...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/ahg.12378

    authors: Heidari E,Razmara E,Hosseinpour S,Tavasoli AR,Garshasbi M

    更新日期:2020-07-01 00:00:00

  • An algorithm for Monte Carlo estimation of genotype probabilities on complex pedigrees.

    abstract::Exact probability and likelihood computation on complex pedigrees is often infeasible, since exact methods are too computationally intensive even with today's computing technology. A statistical tool, Markov chain Monte Carlo (MCMC), is increasingly being explored as a technique for estimating probabilities of genotyp...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1469-1809.1994.tb00731.x

    authors: Lin S,Thompson E,Wijsman E

    更新日期:1994-10-01 00:00:00

  • Testing candidate loci on chromosomes 1 and 6 for genetic linkage to Peutz-Jeghers' disease.

    abstract::Peutz-Jeghers' syndrome (PJS) is a disease with autosomal dominant inheritance, which is characterised by gastrointestinal hamartomata and characteristic melanin pigmentation. Three candidate sites for a PJS locus have recently been proposed, chromosomes 1p31-p32, 6q25 and 6p11-cen. At the first of these sites, a mult...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1469-1809.1996.tb00435.x

    authors: Tomlinson IP,Olschwang S,Abelovitch D,Nakamura Y,Bodmer WF,Thomas G,Markie D

    更新日期:1996-09-01 00:00:00

  • A study of the population of Paraguay through isonymy.

    abstract::In order to describe the isonymic structure of Paraguay, the distribution of 4,843,868 surnames of 2,882,163 persons was studied in the 18 departments and 237 districts of the nation. The correlations between isonymic and geographic distances for departments were r = 0.713 ± 0.052 for Euclidean distance, 0.597 ± 0.074...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1469-1809.2011.00676.x

    authors: Dipierri J,Rodriguez-Larralde A,Alfaro E,Scapoli C,Mamolini E,Salvatorelli G,Caramori G,De Lorenzi S,Sandri M,Carrieri A,Barrai I

    更新日期:2011-11-01 00:00:00

  • Racial heterogeneity of DNA polymorphisms linked to the A and the O alleles of the ABO blood group gene.

    abstract::Except for subgroup A2 and minor A, O and B alleles (Ax, O2 and B(A)), which occur at low frequencies in the population, the major ABO alleles are considered to be homogeneous entities. The present study is the first demonstration of an extensive variability linked to the more common alleles of the blood A and O genes...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1469-1809.1996.tb01173.x

    authors: Zago MA,Tavella MH,Simões BP,Franco RF,Guerreiro JF,Santos SB

    更新日期:1996-01-01 00:00:00

  • Dystrophin nonsense mutations can generate alternative rescue transcripts in lymphocytes.

    abstract::Secondary alterations in splicing have been reported to produce semi-functional mRNA from several nonsense mutations in the dystrophin gene. Disruptions of exonic splicing enhancers by single nucleotide changes are thought to underlie such alterations. The precise frequencies of such nonsense mutation-dependent splici...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1469-1809.2008.00468.x

    authors: Nishiyama A,Takeshima Y,Zhang Z,Habara Y,Tran TH,Yagi M,Matsuo M

    更新日期:2008-11-01 00:00:00

  • From a single whole exome read to notions of clinical screening: primary ciliary dyskinesia and RSPH9 p.Lys268del in the Arabian Peninsula.

    abstract::Primary ciliary dyskinesia (PCD) is a genetic disorder, usually autosomal recessive, causing early respiratory disease and later subfertility. Whole exome sequencing may enable efficient analysis for locus heterogeneous disorders such as PCD. We whole-exome-sequenced one consanguineous Saudi Arabian with clinically di...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1469-1809.2012.00704.x

    authors: Alsaadi MM,Gaunt TR,Boustred CR,Guthrie PA,Liu X,Lenzi L,Rainbow L,Hall N,Alharbi KK,Day IN

    更新日期:2012-05-01 00:00:00

  • Superiority of denaturing high performance liquid chromatography over single-stranded conformation and conformation-sensitive gel electrophoresis for mutation detection in TSC2.

    abstract::We evaluated denaturing high pressure liquid chromatography (DHPLC) as a scanning method for mutation detection in TSC2, and compared it to conformation-sensitive gel electrophoresis (CSGE) and single-stranded conformation polymorphism analysis (SSCP). The first 20 exons of TSC2 were amplified from 84 TSC patients and...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1046/j.1469-1809.1999.6350383.x

    authors: Choy YS,Dabora SL,Hall F,Ramesh V,Niida Y,Franz D,Kasprzyk-Obara J,Reeve MP,Kwiatkowski DJ

    更新日期:1999-09-01 00:00:00

  • On the validity of the likelihood ratio test and consistency of resulting parameter estimates in joint linkage and linkage disequilibrium analysis under improperly specified parametric models.

    abstract::It has been shown that parametric analysis of linkage disequilibrium conditional on linkage using an overly deterministic model can be optimal for family-based association analysis. However, if one applies this strategy carelessly, there is a risk of false inference. We analyse properties of such likelihood ratio test...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1469-1809.2011.00683.x

    authors: Hiekkalinna T,Göring HH,Terwilliger JD

    更新日期:2012-01-01 00:00:00

  • A family-based joint test for mean and variance heterogeneity for quantitative traits.

    abstract::Traditional quantitative trait locus (QTL) analysis focuses on identifying loci associated with mean heterogeneity. Recent research has discovered loci associated with phenotype variance heterogeneity (vQTL), which is important in studying genetic association with complex traits, especially for identifying gene-gene a...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/ahg.12089

    authors: Cao Y,Maxwell TJ,Wei P

    更新日期:2015-01-01 00:00:00

  • A genome-wide association study of autism reveals a common novel risk locus at 5p14.1.

    abstract::Although autism is one of the most heritable neuropsychiatric disorders, its underlying genetic architecture has largely eluded description. To comprehensively examine the hypothesis that common variation is important in autism, we performed a genome-wide association study (GWAS) using a discovery dataset of 438 autis...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1469-1809.2009.00523.x

    authors: Ma D,Salyakina D,Jaworski JM,Konidari I,Whitehead PL,Andersen AN,Hoffman JD,Slifer SH,Hedges DJ,Cukier HN,Griswold AJ,McCauley JL,Beecham GW,Wright HH,Abramson RK,Martin ER,Hussman JP,Gilbert JR,Cuccaro ML,Haines JL

    更新日期:2009-05-01 00:00:00

  • Deconstructing Jaco: genetic heritage of an Afrikaner.

    abstract::It is often assumed that Afrikaners stem from a small number of Dutch immigrants. As a result they should be genetically homogeneous, show founder effects and be rather inbred. By disentangling my own South African pedigree, that is on average 12 generations deep, I try to quantify the genetic heritage of an Afrikaner...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1469-1809.2007.00363.x

    authors: Greeff JM

    更新日期:2007-09-01 00:00:00

  • Further characterization of the human fumarase variant, FH 2--1.

    abstract::1. Further investigation of fumarase using lymphoblastoid cells derived from an individual of the FH 2--1 phenotype has confirmed that the mitochondrial (FHM) and soluble (FHS) forms of fumarase are determined at the same structural locus. 2. The FH 2--1 variant is associated with enzyme deficiency: c. 70% of normal i...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1469-1809.1979.tb02002.x

    authors: Edwards YH,Hopkinson DA

    更新日期:1979-10-01 00:00:00

  • A genome-based study of consanguinity in three co-resident endogamous Pakistan communities.

    abstract::In a study based on 173 individuals drawn from three endogamous, co-resident communities in the province of Punjab, the Awan, Khattar and Rajpoot, an analysis of 10 autosomal single tandem repeats on chromosomes 13 and 15 revealed distinctive genetic profiles in each community. A total of 99 different alleles were det...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1017/S0003480000007946

    authors: Wang W,Sullivan SG,Ahmed S,Chandler D,Zhivotovsky LA,Bittles AH

    更新日期:2000-01-01 00:00:00

  • Adenylate kinases in man: evidence for a third locus.

    abstract::The tissue distribution of the adenylate kinase isozymes in man has been examined using various substrates. The isozymes attributable to the AK1 and AK2 loci were identified, and an additional set of isozymes probably attributable to a third locus was also found. This locus has been provisionally designated AK3. The A...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1469-1809.1976.tb00134.x

    authors: Wilson DE,Povey S,Harris H

    更新日期:1976-01-01 00:00:00

  • Maternal and paternal lineages of the Samaritan isolate: mutation rates and time to most recent common male ancestor.

    abstract::The Samaritan community is a small, isolated, and highly endogamous group numbering some 650 members who have maintained extensive genealogical records for the past 13-15 generations. We performed mutation detection experiments on mitochondrial DNAs and Y chromosomes from confirmed maternal and paternal lineages to es...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1046/j.1469-1809.2003.00024.x

    authors: Bonné-Tamir B,Korostishevsky M,Redd AJ,Pel-Or Y,Kaplan ME,Hammer MF

    更新日期:2003-03-01 00:00:00

  • Differential growth of human foetal gonads with respect to sex and body side.

    abstract::Measurements have been carried out on the gonads of 54 human foetuses, 29 males and 25 females. Crown-rump lengths ranged between 140 and 212 mm. The criteria used were fresh weight, total protein contents and total DNA contents. It was found that for any given crown-rump length class, the mean values of testes exceed...

    journal_title:Annals of human genetics

    pub_type: 杂志文章

    doi:10.1111/j.1469-1809.1976.tb00171.x

    authors: Mittwoch U

    更新日期:1976-07-01 00:00:00