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Leukemia in workers exposed to ethylene oxide.

C Hogstedt, N Malmqvist, B Wadman

|March 16, 1979

Summary

Three leukemia cases were observed in Swedish workers exposed to ethylene oxide, a mutagenic gas used in healthcare. This finding suggests a potential link between ethylene oxide exposure and leukemia, warranting further investigation into its carcinogenicity.

Area of Science:

Occupational Health
Toxicology
Epidemiology

Background:

Ethylene oxide is a widely used gaseous sterilant in healthcare settings.
It is recognized as a mutagen in bacterial and human cell studies.
Regulatory bodies have issued guidelines for its use, though carcinogenicity data is limited.

Observation:

Three cases of leukemia were identified in a cohort of Swedish workers exposed to EtO between 1972 and 1977.
The observed number of leukemia cases (3) significantly exceeded the expected number (0.2) based on national statistics.
The average time-weighted exposure concentration of EtO was 20+/-10 ppm.

Findings:

The study presents a cluster of leukemia cases in a small group of workers exposed to ethylene oxide.

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The observed incidence of leukemia was higher than statistically expected in the general population.

This case series raises concerns about the potential carcinogenicity of ethylene oxide.

Implications:

Further epidemiological studies are warranted to investigate the carcinogenicity of ethylene oxide.
Occupational exposure limits and safety protocols for ethylene oxide may require re-evaluation.
Findings highlight the importance of monitoring worker health in environments with potential exposure to sterilant gases.