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Neuroblastoma expert reviews progress and challenges in fighting difficult pediatric cancer

Childhood cancers are fortunately rare, but among them, neuroblastoma is a special case, accounting for 7 percent of all childhood cancers, but 15 percent of childhood cancer deaths. It typically occurs as a solid tumor in the abdomen, but also in the neck, chest, and pelvis, developing in the network of the body's sympathetic nervous system.

Neuroblastoma is what physicians call a heterogeneous disease; its name includes subtypes of disease that behave very differently. Some cases strike in infants, but spontaneously disappear with minimal treatment, while other cases in older children may be relentlessly aggressive from the start. So precisely defining a given patient's risk level can help oncologists design the best treatment, avoiding the twin pitfalls of undertreating or overtreating any given child.

Better treatments may be on the horizon, but better understanding of neuroblastomas precise biology can guide physicians to the best choices among possible options.

John Maris, M.D., of The Childrens Hospital of Philadelphia, describes the current status of neuroblastoma treatment and trends for the near future, in the June 23 issue of the British journal Lancet. Maris is among the world leaders in neuroblastoma research, with a lab holding tissue samples from 5,000 patients--the world's largest sample collection for the disease.

In his paper, Maris reviews new approaches to treatments for a particularly challenging set of patients--children whose neuroblastoma has relapsed in an aggressive form. One particular technique being used and studied at Children's Hospital employs radioactive isotopes that zero in on neuroblastoma cells to selectively kill those cells with radiation. Other tools include retinoids--biological molecules that hone in on cancer cells, angiogenesis inhibitors that cut off a tumor's blood supply, and tyrosine kinase inhibitors that interrupt a critical step in the tumors growth process.

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Contact: John Ascenzi
Ascenzi@email.chop.edu
267-426-6055
Children's Hospital of Philadelphia
22-Jun-2007


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