title: Lack of association between GTF2H4 genetic variants and AERD development and FEV1 decline by aspirin provocation.
abstract: Aspirin-exacerbated respiratory disease (AERD) is prevalent in about 10% of asthma patients and is characterized by a severe decline in forced expiratory volume in 1-s (FEV(1) ), an important phenotype for total lung capacity, upon ingestion of aspirin. The general transcription factor IIH subunit 4 (GTF2H4) is positioned at 6p21.33, a part of the major histocompatibility complex (MHC) class II region that contains a number of genes that play an important role in the immune system. In addition, genetic variants in another general transcription factor IIH gene have revealed significant association with lung disease. To investigate whether GTF2H4 genetic variants could be a causative factor for AERD development and FEV(1) decline by aspirin provocation, five common single-nucleotide polymorphisms (SNPs) were genotyped in 93 patients with AERD and 96 aspirin-tolerant asthma (ATA) controls. As a result, when adjusted for age, gender, smoking status and atopy as covariates, the rs1264307 variant and two haplotypes showed nominal signals in the association with AERD (P = 0.02-0.04), but the significances disappeared after corrections for multiple testing (corrected P > 0.05). In further multiple regression analysis, no genetic variants of GTF2H4 showed significant associations with FEV(1) decline by aspirin provocation in asthmatics (P > 0.05). Despite the need for replications in larger cohorts, our preliminary findings suggest that GTF2H4 variants may not be associated with susceptibility to AERD and obstructive symptoms in asthmatics.
authors.affiliation: Department of Life Science, Sogang University, Seoul, Korea.
authors.forename: J Y
authors.initials: JY
authors.lastname: Kim
authors.forename: J-H
authors.initials: JH
authors.lastname: Kim
authors.forename: J S
authors.initials: JS
authors.lastname: Bae
authors.forename: B-L
authors.initials: BL
authors.lastname: Park
authors.forename: S-T
authors.initials: ST
authors.lastname: Uh
authors.forename: M-K
authors.initials: MK
authors.lastname: Kim
authors.forename: I S
authors.initials: IS
authors.lastname: Choi
authors.forename: S H
authors.initials: SH
authors.lastname: Cho
authors.forename: C-S
authors.initials: CS
authors.lastname: Park
authors.forename: H D
authors.initials: HD
authors.lastname: Shin
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D055963:Asthma, Aspirin-Induced / Q000235:genetics* / Q000503:physiopathology*; D005260:Female; D005541:Forced Expiratory Volume / Q000235:genetics*; D056726:Genetic Association Studies; D020022:Genetic Predisposition to Disease; D006239:Haplotypes / Q000235:genetics; D006801:Humans; D015810:Linkage Disequilibrium / Q000235:genetics; D008297:Male; D008875:Middle Aged; D020161:Physical Chromosome Mapping; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D051758:Transcription Factor TFIIH / Q000235:genetics*; D014157:Transcription Factors / Q000235:genetics*; D055815:Young Adult
chemical_list: D014157:Transcription Factors; D051758:Transcription Factor TFIIH