Food Consumption Risks Associated with Animal Clones: What Should Be Investigated?

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Abstract
Somatic Cell Nuclear Transfer (SCNT), or cloning, is likely to be used for the expansion of elite breeding stock of agronomically important livestock used for food. The Center for Veterinary Medicine at the US Food and Drug Administration has been developing a risk assessment to identify hazards and characterize food consumption risks that may result from cloning. The risk assessment is comprised of two prongs. The first evaluates the health of animal clones, and is referred to as the Critical Biological Systems Approach. The second considers the composition of meat and milk from animal clones. Assessing the safety of food products from animal clones and their progeny, at least during these early stages of the development of the technology, is best accomplished by using both approaches: prospectively drawing on our knowledge of biological systems in development and maturation, and in retrograde, from an analysis of food products. Subtle hazards and potential risks that may be posed by animal clones must, however, be considered in the context of other mutations and epigenetic changes that occur in all food animal populations.