IARC group 2B substances, mixtures and exposure circumstances are those that have been classified as "possibly carcinogenic to humans" by the
International Agency for Research on Cancer (IARC) as [1] This category is used when there is
limited evidence of carcinogenicity in humans and less than sufficient evidence of carcinogenicity in
experimental animals. It may also be used when there is inadequate evidence of carcinogenicity in humans but there is sufficient evidence of carcinogenicity in experimental animals. 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.
This list focuses on the
hazard linked to the agents. This means that the carcinogenic agents are capable of causing cancer, but this does not take their
risk into account, which is the probability of causing a cancer given the level of exposure to this carcinogenic agent.[2] The list is up to date as of January 2024.[3]
^"IARC monographs preamble (as amended in 2019)"(PDF). International Agency for Research on Cancer (IARC). Retrieved August 18, 2023. A cancer hazard is an agent that is capable of causing cancer, whereas a cancer risk is an estimate of the probability that cancer will occur given some level of exposure to a cancer hazard.
IARC group 2B substances, mixtures and exposure circumstances are those that have been classified as "possibly carcinogenic to humans" by the
International Agency for Research on Cancer (IARC) as [1] This category is used when there is
limited evidence of carcinogenicity in humans and less than sufficient evidence of carcinogenicity in
experimental animals. It may also be used when there is inadequate evidence of carcinogenicity in humans but there is sufficient evidence of carcinogenicity in experimental animals. 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.
This list focuses on the
hazard linked to the agents. This means that the carcinogenic agents are capable of causing cancer, but this does not take their
risk into account, which is the probability of causing a cancer given the level of exposure to this carcinogenic agent.[2] The list is up to date as of January 2024.[3]
^"IARC monographs preamble (as amended in 2019)"(PDF). International Agency for Research on Cancer (IARC). Retrieved August 18, 2023. A cancer hazard is an agent that is capable of causing cancer, whereas a cancer risk is an estimate of the probability that cancer will occur given some level of exposure to a cancer hazard.