Vanderbilt-Ingram Cancer Center studies effects of cancer treatment among children of survivors

Can the high doses of chemotherapy and radiation that young cancer patients receive cause inherited health problems for their children? Vanderbilt-Ingram Cancer Center member, John Boice, Sc.D., and an international team of colleagues have just been awarded a $4 million grant from the National Cancer Institute to try to find out.

Boice is trying to determine what the level of risk might be for a cancer survivor who is able to have children. So far, he said it looks like the risk is not as high as you might expect. "Our initial data indicate that the level of adverse genetic effects among children of cancer survivors is not remarkably different than seen in the general population. If it were, we already would be able to see larger numbers of offspring being born with birth defects or dying early," said Boice. "This suggests that the human genome may not be as susceptible for inherited effects as other species, despite high exposures to radiation and chemotherapy."

Boice and colleagues will try to quantify the risks of birth defects and other adverse outcomes for offspring of cancer survivors based on the amount of chemotherapy and radiation received. "We're also taking blood samples from the survivor, their spouse and their children to look at the molecular level for markers for genetic effects."

Boice is working closely with researchers in Denmark and Finland, where all persons diagnosed with cancer under the age of 35 after 1943 in Denmark, and 1952 in Finland, are being identified using extensive databases containing a wealth of patient information. Boice said because no comparable system exists in the United States, collecting data here is more problematic. "Adverse outcomes are rare, so we have to be able to study large groups of cancer survivors in order to develop precise estimates of risk," Boice said. Already, over 59,000 cancer survivors who had 19,000 children have been identified in Denmark and Finland.

Over the next fiv

Contact: Heather Hall
Vanderbilt University Medical Center

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