Related Experiment Video
Updated: Jun 30, 2025

A Method to Study the C924T Polymorphism of the Thromboxane A2 Receptor Gene
Published on: April 1, 2019
Correlation between LTC4S -444 A>C polymorphism and susceptibility to asthma: A meta-analysis and trial sequential
Delin Wu1, Yuna Liu2, Yan Liu1
1Beijing Hospital of Integrated Traditional Chinese and Western Medicine, Department of Respiratory, Beijing, China.
This study investigated the link between the LTC4S -444 A>C gene variant and asthma risk. The findings suggest this polymorphism may influence an individual's susceptibility to developing asthma.
Area of Science:
- Genetics
- Respiratory Medicine
- Epidemiology
Background:
- Asthma is a common respiratory condition with complex genetic and environmental influences.
- The leukotriene C4 synthase (LTC4S) gene plays a role in inflammatory pathways relevant to asthma.
- The -444 A>C polymorphism in the LTC4S gene is a candidate marker for asthma susceptibility.
Purpose of the Study:
- To systematically evaluate the association between the LTC4S -444 A>C polymorphism and asthma susceptibility.
- To synthesize evidence from published literature to determine the overall correlation.
Main Methods:
- A comprehensive literature search was conducted in major databases (PubMed, Embase, Cochrane, Wanfang, CNKI) up to June 1, 2019.
- Eligible studies reporting the LTC4S -444 A>C polymorphism and asthma were included.
- Meta-analysis using fixed or random effects models, with heterogeneity and sensitivity analyses, was performed using STATA12.1 and TSA.
Main Results:
- Data from eligible studies were extracted and analyzed to calculate the odds ratio (OR) and 95% confidence interval (CI).
- The meta-analysis aimed to provide a pooled estimate of the association between the LTC4S -444 A>C polymorphism and asthma risk.
- Statistical methods were employed to assess the reliability and consistency of the findings across studies.
Conclusions:
- The study aimed to clarify the role of the LTC4S -444 A>C polymorphism in asthma pathogenesis.
- Further research may be warranted to confirm the findings and explore underlying mechanisms.
- Understanding genetic predispositions like the LTC4S polymorphism can contribute to personalized asthma management strategies.
Related Concept Videos
Asthma-II: Pathophysiology and Classification
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
Asthma-I: Introduction
Cystic Fibrosis: Pathogenesis
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
Asthma: Pathogenesis and Management
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
Chronic Obstructive Pulmonary Disease-II: Pathophysiology
Chronic Inflammation
Asthma-IV: Diagnostic and Management
Clinical Assessment for Asthma:
This is the first step in diagnosing and managing asthma. It includes:

