Scientists identify cells responsible for relapse after treatment in common childhood cancerMarch 29, 2007Approximately 20% of children with ALL will experience a relapse of their disease following treatment. Of these, most will never be cured. "We have previously shown that these relapses were due to small numbers of cells which survived the treatment administered to the patient," said Prof Norris. "However, it has been unclear whether these cells developed resistance to chemotherapy during the course of treatment or if they were already present in the child at the time their cancer was diagnosed." The findings of this study demonstrate that relapse in ALL patients can result from a minor, but intrinsically resistant subpopulation of cells, present from the time of diagnosis. Undetected at diagnosis because of their very small numbers, this population of leukaemia cells remained in the patient's body throughout the disease and continued to thrive even after the major population of sensitive leukaemia cells were destroyed and the patient appeared to have gone into remission. "We have shown, for the first time, that children with a greater number of these cells at diagnosis are more likely to experience relapse much sooner after treatment. "Without new strategies to identify and attack these cells early in treatment, relapse appears inevitable for these patients," said Prof Norris. "Our ability to characterise these cells means that researchers can now develop treatments which specifically target the cells and are more effective than current options.\\\ Research Australia |
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| Related Childhood Cancers Current Events and Childhood Cancers News Articles Anti-psychotic drugs could help fight cancer The observation that people taking medication for schizophrenia have lower cancer rates than other people has prompted new research revealing that anti-psychotic drugs could help treat some major cancers. PET Can Help Guide Treatment Decisions for a Common Pediatric Cancer A new study published in the August issue of The Journal of Nuclear Medicine shows that positron emission tomography (PET) is an important tool for depicting the extent of neuroblastoma in some patients, particularly for those in the early stages of the disease. Common household pesticides linked to childhood cancer cases in Washington area A new study by researchers at the Georgetown's Lombardi Comprehensive Cancer Center finds a higher level of common household pesticides in the urine of children with acute lymphoblastic leukemia (ALL), a cancer that develops most commonly between three and seven years of age. U of M Researchers Find Childhood Cancer Risk Rises with Mother's Age Research from the Masonic Cancer Center, University of Minnesota indicates that a baby born to an older mother may have a slightly increased risk for many of the cancers that occur during childhood. Genetic finding could lead to targeted therapy for neuroblastoma Researchers have identified a genetic glitch that could lead to development of neuroblastoma, a deadly form of cancer that typically strikes children under 2. USC researchers identify DNA mutation that occurs at beginning point of T-cell lymphoma Researchers at the Keck School of Medicine of the University of Southern California (USC) have identified a key mechanism that causes chromosomes within blood cells to break-an occurrence that marks the first step in the development of human lymphoma. New therapy enlists immune system to boost cure rate in a childhood cancer A multicenter research team has announced encouraging results for an experimental therapy using elements of the body's immune system to improve cure rates for children with neuroblastoma, a challenging cancer of the nervous system. Mutant genes in high-risk childhood leukemias identified A research team has pinpointed a new class of gene mutations, which identify cases of childhood acute lymphoblastic leukemia (ALL) that have a high risk of relapse and death. University of Kansas graduate student researcher takes aim at deadly brain tumors Natalie Ciaccio, a fourth-year graduate student researcher in the Department of Pharmaceutical Chemistry at the University of Kansas, is investigating what might be an ideal target for anti-cancer drug therapy, and she is focusing her work on brain tumors specifically. New research shows lower educational outcomes for survivors of childhood cancer New research funded by the Canadian Cancer Society has discovered poor educational achievement and learning difficulties for some childhood cancer survivors, especially those diagnosed with brain tumours. More Childhood Cancers Current Events and Childhood Cancers News Articles |
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