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Impact of Vitamin D Receptor Genotypes on Taiwan Asthma Risk
Shou-Cheng Wang1,2, Hou-Yu Shih3,4, Jie-Long He5
1Taichung Armed Forces General Hospital, Taichung, Taiwan, R.O.C.
In Vivo (Athens, Greece)
|June 27, 2025
Summary
The vitamin D receptor (VDR) gene variant rs2228570 A allele is linked to increased asthma risk and more severe symptoms. This VDR genotype may help predict asthma severity in affected individuals.
Area of Science:
- Immunogenetics
- Respiratory Medicine
- Molecular Biology
Background:
- Vitamin D is crucial for immune system regulation.
- Variations in the vitamin D receptor (VDR) gene have been implicated in asthma risk, but findings are inconsistent.
- This study investigates the association between VDR polymorphisms and asthma risk and severity.
Purpose of the Study:
- To evaluate the impact of specific VDR gene polymorphisms on asthma susceptibility.
- To determine if VDR genotypes correlate with asthma symptom severity.
Main Methods:
- Genotyping of VDR polymorphisms (rs731236, rs1544410, rs2228570, rs7975232) using PCR-RFLP.
- Analysis of a cohort including 198 asthma cases and 453 healthy controls.
Main Results:
- The VDR rs2228570 variant genotypes (AG and AA) were associated with a significantly higher risk of asthma compared to the GG genotype.
- Carrying the VDR rs2228570 A allele increased asthma risk (OR=1.51).
- A significant association was found between VDR rs2228570 A-carrying genotypes and increased asthma symptom severity (p for trend=0.0024).
Conclusions:
- The VDR rs2228570 A allele is linked to increased asthma susceptibility.
- This VDR variant may serve as a predictor for asthma symptom severity.
- Further research in larger, diverse populations is recommended to confirm these findings.
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