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Updated: May 9, 2026

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Vinyl Chloride and High-Fat Diet as a Model of Environment and Obesity Interaction
Published on: January 12, 2020
Mutant p21ras in vinyl chloride exposed workers
Summary
Vinyl chloride (VC) exposure is linked to a specific ras mutation, a potential cancer biomarker. Increased VC exposure correlated with higher levels of this mutant p21 protein biomarker in workers.
Area of Science:
- Oncology
- Molecular Biology
- Occupational Health
Background:
- Mutations in cellular oncogenes like ras are implicated in human cancer development.
- Mutant p21 protein expression can serve as a biomarker for carcinogenic processes.
- Vinyl chloride (VC) exposure is associated with angiosarcoma of the liver (ASL) and specific ras mutations.
Purpose of the Study:
- To investigate the relationship between vinyl chloride (VC) exposure and a mutant p21ras biomarker.
- To assess the utility of mutant p21ras as an early indicator of carcinogenic risk in VC-exposed workers.
Main Methods:
- Serum samples from 225 French VC workers and 111 controls were analyzed.
- Immunoblotting with a monoclonal antibody specific for mutant p21ras was employed.
- VC exposure levels were estimated in ppm-years and stratified by quartiles.
Main Results:
- A statistically significant trend of increasing odds ratio for mutant p21ras biomarker sero-positivity was observed with increasing VC exposure.
- Higher quartiles of VC exposure showed a greater likelihood of detecting the biomarker.
Conclusions:
- The serum mutant p21ras biomarker is associated with vinyl chloride (VC) exposure.
- This biomarker may serve as an early indicator of carcinogenic risk in individuals exposed to VC.
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