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- Group 2A means that the agent is probably carcinogenic to humans. For agents in this category, there is usually convincing evidence that the agent causes cancer in laboratory animals and some evidence that it could cause cancer in humans, but the evidence in humans is not conclusive.
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Jun 16, 2023 · hazard classification. This infographic presents the categories used by the IARC Monographs on the Identification of Carcinogenic Hazards to Humans to classify a substance according to the level of certainty that the substance can cause cancer.
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For example, IARC considers there to be strong evidence that both tobacco smoking and eating processed meat can cause cancer, so both are listed as “carcinogenic to humans.” But smoking is much more likely to cause cancer than eating processed meat, even though both are in the same category.
Feb 24, 2015 · Group 2B: The agent is possibly carcinogenic to humans. This category is used for agents for which there is limited evidence of carcinogenicity in humans and less than sufficient evidence of carcinogenicity in experimental animals.
- Neil Pearce, Aaron Blair, Paolo Vineis, Wolfgang Ahrens, Aage Andersen, Josep M. Anto, Bruce K. Arms...
- 2015
The most widely used system for classifying carcinogens comes from the IARC. Over the past several decades, the IARC has evaluated the cancer-causing potential of more than 1,000 likely candidates, placing them into one of the following groups: Group 1: Carcinogenic to humans; Group 2A: Probably carcinogenic to humans
IARC classifies agents into five categories: Group 1 (carcinogenic to humans), Group 2A (probably carcinogenic), Group 2B (possibly carcinogenic), Group 3 (not classifiable), and Group 4 (probably not carcinogenic).
Sep 9, 2019 · The agent is possibly carcinogenic to humans (group 2B): This category generally applies when only one of the following evaluations has been made by the working group: • Limited evidence of carcinogenicity in humans • Sufficient evidence of carcinogenicity in experimental animals
After evaluating the weight of the evidence that an agent can increase the risk of cancer, the Working Group classifies the agent into one of five categories: Group 1, carcinogenic to humans; Group 2A, probably carcinogenic to humans; Group 2B, possibly carcinogenic to humans; Group 3, not classifiable as to its carcinogenicity to humans; or ...
