Formaldehyde as a Potential Human Leukemogen: An Assessment of Biological Plausibility
2006
The International Agency for Research on Cancer () recently reevaluated the epidemiological data on formaldehyde and concluded that there was “strong but not sufficient evidence for a causal association between leukaemia and occupational exposure to formaldehyde.” This conclusion was tempered since a mechanism for leukemia induction could not be identified. Chemically induced leukemia is a well-studied phenomenon with benzene and a number of cancer chemotherapeutic drugs recognized as capable of causing this effect. Abundant in vitro and in vivo data in animals and humans demonstrate that exposure to sufficient doses of these recognized leukemogens can initiate a cascade of events leading to hematopoietic toxicity and the subsequent development of leukemia. This review addresses the biological plausibility that formaldehyde might be capable of causing any type of leukemia by providing a broad overview of the scientific data that must be considered in order to support or refute a conclusion that a particul...
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