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Occupational chlorophenol exposure and soft tissue sarcoma risk among men aged 30-60 years
J A Hoppin1, P E Tolbert, R F Herrick
1Department of Environmental and Occupational Health, Rollins School of Public Health, Emory University, Atlanta, GA 30322, USA.
American Journal of Epidemiology
|October 20, 1998
Summary
High-intensity chlorophenol exposure is linked to increased soft tissue sarcoma risk. A duration-response trend was observed, with over 10 years of exposure significantly elevating risk.
Area of Science:
- Occupational Health
- Environmental Epidemiology
- Toxicology
Background:
- Soft tissue sarcoma (STS) is a rare cancer.
- Previous studies have suggested links between phenoxyherbicide exposure and STS.
- The role of chlorophenol exposure, independent of phenoxyherbicides, requires further investigation.
Purpose of the Study:
- To assess the association between chlorophenol exposure and soft tissue sarcoma risk.
- To determine if this association is independent of phenoxyherbicide exposure.
Main Methods:
- Population-based case-control study (Selected Cancers Study).
- Included 295 male STS cases and 1,908 male controls (aged 32-60).
- Chlorophenol exposure assessed by industrial hygienist using job descriptions; risk modeled with conditional logistic regression.
Main Results:
- High-intensity chlorophenol exposure was significantly associated with increased STS risk (OR=1.79).
- A significant duration-response trend was observed (p<0.0001).
- Subjects with ≥10 years of substantial exposure had a markedly higher risk (OR=7.78).
Conclusions:
- Chlorophenol exposure may increase soft tissue sarcoma risk, independent of phenoxyherbicides.
- Machining exposures, potentially related to cutting fluids, warrant further study as a possible confounding factor.