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Related Experiment Video

Updated: Jun 27, 2026

A Method to Study the C924T Polymorphism of the Thromboxane A2 Receptor Gene

A Method to Study the C924T Polymorphism of the Thromboxane A2 Receptor Gene

Published on: April 1, 2019

Asbestosis and catalase genetic polymorphism.

Alenka Franko¹, Vita Dolzan, Niko Arnerić

¹Clinical Institute of Occupational, Traffic and Sports Medicine, University Medical Centre, Ljubljana, Slovenia.

Arhiv Za Higijenu Rada I Toksikologiju

|December 10, 2008

Summary

The CAT -262 TT genotype may slightly increase asbestosis risk in asbestos-exposed workers. Cumulative asbestos exposure, not gene-environment interaction, was a significant risk factor.

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Area of Science:

Occupational Health
Genetics
Pulmonary Medicine

Background:

Catalase (CAT) is crucial for enzymatic defense against reactive oxygen species (ROS).
ROS are implicated in the pathogenesis of asbestosis, a lung disease caused by asbestos exposure.
Genetic variations in CAT may influence individual susceptibility to asbestosis.

Purpose of the Study:

To investigate the association between the CAT -262 C>T genetic polymorphism and the risk of developing asbestosis.
To explore the potential interaction between this genetic polymorphism and occupational asbestos exposure in disease development.

Main Methods:

A nested case-control study design was employed.
262 asbestosis cases and 265 controls with no asbestos-related disease were analyzed.
Real-time PCR was used for CAT -262 C>T genotyping; asbestos exposure and smoking data were collected.

Main Results:

A slightly elevated risk of asbestosis was observed for the CAT -262 TT genotype (OR=1.36).
This association remained after adjusting for sex, age, and smoking.
Cumulative asbestos exposure significantly modified the risk (OR=1.91), acting as a confounder rather than a synergistic factor.

Conclusions:

The CAT -262 TT genotype may be a minor risk factor for asbestosis.
Cumulative asbestos exposure is a significant confounder in the genetic association studies.
Understanding gene-environment interactions is key to elucidating asbestosis pathogenesis.