When a child is diagnosed with cancer, one of the first questions the parents ask is "Will my other children get cancer?" A new study from Huntsman Cancer Institute (HCI) at the University of Utah suggests the answer to that question depends on whether a family history of cancer exists. The research results were published online in the International Journal of Cancer and will appear in the November 15 print issue.
The study, led by Joshua Schiffman, M.D., medical director of HCI's High Risk Pediatric Cancer Clinic and a pediatric hematologist/oncologist in in the Department of Pediatrics at the University of Utah, examined the family medical history of 4,482 children diagnosed with cancer over a 43-year period to determine the cancer risk in their relatives.
The research team found that when children were diagnosed with any kind of cancer at age 18 or younger, the risk to their parents, siblings, or children for childhood cancer doubled compared to families with no childhood cancer patients. If the cancer diagnosis came when the child was age 4 or less, the risk to close relatives for childhood cancer increased almost four times.
"No one had previously studied the question, so we simply told parents there was no evidence of increased risk to the other children," said Schiffman. "Now we can give an evidence-based answer—the risk depends on your family history of cancer."
This is the first study that uses the Utah Population Database (UPDB) to broadly examine the risk of all types of cancer in relatives of children with cancer. This unique resource at the University of Utah links genealogies and cancer registry data from Utah to medical records and vital records, including Utah death certificates.
"Because our data came from the UPDB, the assessment of family history in our study does not rely on self- or family-reported medical history," said lead author Karen Curtin, Ph.D., a genetic epidemiologist and UPDB assistant director. "Self-reporting of family medical history depends on an individual's memory, while our data comes from the statewide Utah Cancer Registry that records nearly all cancer cases, which reduces possible errors in reporting family cancers."
The team also assessed known inherited genetic syndromes in adult relatives of pediatric cancer patients. They found cancers associated with Li-Fraumeni Syndrome (LFS) seemed to be driving the increased risk to relatives in families with a history of cancer.
"Not all children's cancers are hereditary," said Schiffman. "But the numbers in this study suggest that the proportion of hereditary childhood cancers may be significantly higher than the 5-10% generally cited in adult hereditary cancers, and likely even more than 20%.
"LFS is one of the most devastating cancer syndromes," said Schiffman. "It causes a variety of cancers in both children and adults. For people with LFS, the lifetime risk of getting cancer is 80% to 90%, but with increased and early screening for tumors, there's early indication of a very high survival rate, perhaps even approaching100%. In a previous study, LFS patients who did not receive early screening only had a 20% survival rate."
Although childhood cancer rarely occurs in the population, based on their findings, the authors recommended collection of three generations of family medical history for all newly diagnosed pediatric cancer patients and referral of families with a history of early-onset cancers in children or adults for genetic counseling. In addition, parents of children diagnosed with cancer before age five with a family history of cancer should be advised of the potential for increased risk to other children in the family.
"We want to encourage the taking of a family history as part of routine care. With all cancers, but perhaps especially with childhood cancers, so many other questions seem so urgent, a family history may not seem to be the most pressing issue," said co-author Wendy Kohlmann, director of HCI's Genetic Counseling Program. "When families are referred into genetic counseling, we can provide them with more information about the risks and actions they can take."
"For families with previously unidentified LFS, following these recommendations could actually save the lives of multiple family members if at risk individuals are identified and early cancer surveillance programs implemented," Schiffman said.
The data analyzed in this study indicated that outcomes for pediatric cancer patients are worse in families with a history of cancer. Schiffman said that further studies are planned to learn the clinical implications of this observation.
Other co-authors of the article include Ken R. Smith, Ph.D., an HCI investigator, director of the UPDB and a professor in Human Development and Family Studies at the University of Utah; Alison Fraser; and Richard Pimentel, both of HCI's UPDB resource. The study was funded by an Alex's Lemonade Stand Foundation Epidemiology Award, the Utah State Department of Health, Huntsman Cancer Foundation, the National Institutes of Health grant number P30 CA042014, and the National Cancer Institute's SEER program HHSN261201000026C.
The mission of Huntsman Cancer Institute (HCI) at The University of Utah is to understand cancer from its beginnings, to use that knowledge in the creation and improvement of cancer treatments, to relieve the suffering of cancer patients, and to provide education about cancer risk, prevention, and care. HCI is a National Cancer Institute-designated cancer center, which means that it meets the highest national standards for world-class, state-of-the-art programs in multidisciplinary cancer research and receives support for its scientific endeavors. HCI is also a member of the National Comprehensive Cancer Network (NCCN), a not-for-profit alliance of the world's leading cancer centers dedicated to improving the quality and effectiveness of care provided to patients with cancer. For more information about HCI, please visit http://www.huntsmancancer.org.
Innovative genetic tests for children with developmental disorders and epilepsy
11.07.2018 | Christian-Albrechts-Universität zu Kiel
Oxygen loss in the coastal Baltic Sea is “unprecedentedly severe”
05.07.2018 | European Geosciences Union
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...
Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.
Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
19.07.2018 | Earth Sciences
19.07.2018 | Power and Electrical Engineering
19.07.2018 | Materials Sciences