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Home >Information for Patients > Dictionary Index

Dictionary of Cancer Terms

View in Spanish: Polimorfismo

Polymorphism (PAH-lee-MOR-fih-zum)
A common change in the genetic code in DNA. Polymorphisms can have a harmful effect, a good effect, or no effect. Some polymorphisms have been shown to increase the risk of certain types of cancer.



 
 
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.