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High-throughput Quantitative Real-time RT-PCR Assay for Determining Expression Profiles of Types I and III Interferon Subtypes
Published on: March 24, 2015
Interferon-gamma Genetic Polymorphism and Expression in Kawasaki Disease
Ying-Hsien Huang1, Yu-Wen Hsu, Hsing-Fang Lu
1From the Department of Pediatrics and Kawasaki Disease Center, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, (Y-HH, H-RY, F-CH, H-CK); Department of Clinical Pharmacy, Taipei Medical University (Y-WH, H-FL, W-CC); The Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University and Academia Sinica (Y-WH); Department of Pharmacy, Taipei Medical University-Shuang Ho Hospital (H-FL, W-CC); Department of Clinical Pharmacy, College of Pharmacy, Taipei Medical University (HS-CW, W-CC); Master Program for Clinical Pharmacogenomics and Pharmacoproteomics, School of Pharmacy, Taipei Medical University, Taipei (W-CC, H-CK); and Institute of Nursing and Department of Nursing, Chang Gung University of Science and Technology, Kaohsiung, Taiwan (H-CK).
This study links IFNG gene variations to Kawasaki disease (KD) risk and treatment response. Specific IFNG gene polymorphisms affect intravenous immunoglobulin (IVIG) outcomes and coronary artery aneurysm risk in KD patients.
Area of Science:
- Immunology
- Genetics
- Pediatric Rheumatology
Background:
- Kawasaki disease (KD) is a critical pediatric systemic vasculitis with unknown causes.
- Interferon-gamma (IFN-γ), produced by immune cells, is implicated in KD's immunopathogenesis.
- The role of IFNG gene polymorphisms in KD remains unclear.
Purpose of the Study:
- To investigate the association between IFNG gene polymorphisms and KD.
- To analyze the correlation of IFNG gene variants with plasma IFN-γ levels in KD patients.
- To evaluate the impact of IFNG gene polymorphisms on KD treatment outcomes, including coronary artery lesions (CAL) and response to intravenous immunoglobulin (IVIG).
Main Methods:
- Recruited 950 participants (381 KD patients, 569 controls).
- Genotyped three IFNG single-nucleotide polymorphisms (rs2069718, rs1861493, rs2069705) using TaqMan assay.
- Measured plasma IFN-γ levels via ELISA and collected clinical data on KD phenotypes, CAL, coronary artery aneurysms (CAA), and IVIG response.
Main Results:
- Significant differences in IFNG gene polymorphisms were observed between KD patients and controls.
- The G allele of rs1861493 was associated with improved IVIG treatment response in KD patients.
- AA allele frequencies of rs1861493 correlated with increased risk of CAA and lower plasma IFN-γ levels compared to GG alleles, both pre- and post-IVIG.
Conclusions:
- This study presents the first evidence linking IFNG gene polymorphisms to KD susceptibility.
- IFNG gene variants influence IVIG responsiveness and plasma IFN-γ levels in KD patients.
- Findings suggest IFNG gene polymorphisms are relevant to KD pathogenesis and clinical outcomes.
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