What is Class B carcinogen?
This category is used for agents, mixtures and exposure circumstances for which there is limited evidence of carcinogenicity in humans and less than sufficient evidence of carcinogenicity in experimental animals. …
What are the groups of carcinogens?
The details of the classifications are as follows:
- Group 1: Carcinogenic to humans. Sufficient evidence in humans.
- Group 2A: Probably carcinogenic to humans.
- Group 2B: Possibly carcinogenic to humans.
- Group 3: Not classifiable as to its carcinogenicity to humans.
- Group 4: Probably not carcinogenic to humans.
What is a Group 2A carcinogen?
Group 2A: “The agent (mixture) is probably carcinogenic to humans . The exposure circumstance entails exposures that are probably carcinogenic to humans.” “This category is used when there is limited evidence of carcinogenicity in humans and sufficient evidence of carcinogenicity in experimental animals.
What are the Group 1 carcinogens?
International Agency for Research on Cancer Group 1: Carcinogenic to humans
- Acetaldehyde (from consuming alcoholic beverages)
- Acheson process, occupational exposure associated with.
- Acid mists, strong inorganic.
- Alcoholic beverages.
- Aluminum production.
- Areca nut.
What is the most powerful carcinogen?
Aristolochic acid—one of the most potent carcinogens known to man.
Are there any agents that are carcinogenic to humans?
In some instances, an agent, mixture or exposure circumstance for which there is inadequate evidence of carcinogenicity in humans but limited evidence of carcinogenicity in experimental animals together with supporting evidence from other relevant data may be placed in this group.
What does it mean to be in Group B1?
Usually, Group B1 is reserved for agents for which there is limited evidence of carcinogenicity from epidemiological studies. It is reasonable, for practical purposes, to regard an agent for which there is “sufficient evidence of carcinogenicity ” in animals as if it presented a carcinogenic risk to humans.
What is the classification of a human carcinogen?
Standard EPA classification categorization descriptions. Group A: “Human Carcinogen”. “This group is used only when there is sufficient evidence from epidemiologic studies to support a cusal association between exposure to the agents and cancer.”.
Are there any radionuclides that are carcinogenic to humans?
Radionuclides, alpha-particle-emitting, internally deposited (Note: Specific radionuclides for which there is sufficient evidence for carcinogenicity to humans are also listed individually as Group 1 agents)