Genetic factors cause leukemia

Genetic susceptibility to leukemia inferred from the following facts:
① certain high-risk families, suffering from leukemia between compatriots chance than normal crowd four times higher;
② with egg twin children, one suffering from leukemia, another person suffering from leukemia opportunities than normal high 25 percent;
③ with special genetic syndrome, the incidence of leukemia increased, such as Down's syndrome (Down syndrome), Fanconi anemia, hereditary ataxia telangiectasia, etc..
Despite these potential pathogenic factors, but no one can fully explain all the factors, such as radiation exposure, the occurrence of leukemia only a handful. Therefore, the occurrence of leukemia speculation is not a single factor, may be caused by a variety of factors, there may be some patients with congenital susceptibility quality, again because of the role of external factors, the occurrence of induced leukemia.