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Genetic polymorphisms in drug targets have emerged as critical determinants of interindividual variability in drug response and toxicity. Pharmacogenomic investigations increasingly focus on identifying these variations to personalize and optimize therapeutic interventions. A drug target may be a receptor, enzyme, or signaling protein involved in pharmacologic responses or disease-related pathways. While early pharmacogenetic studies focused primarily on drug metabolism, current research...
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A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
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Native Polyacrylamide Gel Electrophoresis Immunoblot Analysis of Endogenous IRF5 Dimerization
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Published on: October 6, 2019

Interferon regulatory factor 5 polymorphisms in sarcoidosis.

Kiminobu Tanizawa1, Tomohiro Handa, Sonoko Nagai

  • 1Department of Respiratory Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawaharacho, Sakyo-ku, Kyoto, 606-8507, Japan, tanizawa@kuhp.kyoto-u.ac.jp.

Modern Rheumatology
|January 5, 2013
PubMed
Summary
This summary is machine-generated.

Genetic variations in the Interferon Regulatory Factor 5 (IRF5) gene are linked to sarcoidosis risk. A specific IRF5 haplotype, rs10954213A and rs2280714A, significantly increases susceptibility in the Japanese population.

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Area of Science:

  • Genetics
  • Immunology
  • Rheumatology

Background:

  • Interferon regulatory factor 5 (IRF5) gene polymorphisms are implicated in autoimmune disease susceptibility.
  • Understanding the role of IRF5 single-nucleotide polymorphisms (SNPs) in sarcoidosis is crucial for disease research.

Purpose of the Study:

  • To investigate the association between specific IRF5 single-nucleotide polymorphisms (SNPs) and the risk of developing sarcoidosis.
  • To determine the contribution of IRF5 gene variations to sarcoidosis susceptibility in a Japanese cohort.

Main Methods:

  • Genotyping of 175 Japanese sarcoidosis patients and 150 controls for four IRF5 SNPs (rs729302, rs2004640, rs10954213, rs2280714).
  • Statistical analysis to evaluate the association of individual SNPs and haplotypes with sarcoidosis risk.

Main Results:

  • Carriage of rs10954213A and rs2280714A significantly increased sarcoidosis risk (ORs ~1.96-1.97).
  • A haplotype combining rs10954213A and rs2280714A showed a significant association with sarcoidosis susceptibility (OR = 2.00).
  • rs2004640G was found to be protective against pulmonary hypertension.

Conclusions:

  • A specific IRF5 haplotype (rs10954213A and rs2280714A) is associated with an increased risk of sarcoidosis in the Japanese population.
  • These findings highlight the role of IRF5 genetic variations in sarcoidosis pathogenesis.