In its current issue, Science magazine published the results of a childhood leukemia study carried out at St. Jude Children's Research Hospital in Mephis (Tennessee). Based on 61 samples from young patients that relapsed backed into the diesease after seemingly succesful chemotherapy, they found that in the majority of cases, a loss in DNA "caused certain genes to shut down". While the results might not necessarily be transferable to other types of cancer, they seem to indicate a path towards preventing relapse and identifyig children at risk.

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