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Journal Article
Research Support, Non-U.S. Gov't
H-RAS, K-RAS, and N-RAS gene activation in human bladder cancers.
Cancer Genetics and Cytogenetics 2000 August
Bladder cancer is one of the leading causes of cancer death in most developed countries. In this work, 19 bladder cancer specimens, along with their infiltrations of the urinary bladder wall from the same patients, were examined for the presence of H-RAS, K-RAS, and N-RAS activation using a polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay. The H-RAS activation was found in 15 (about 84%) of the 19 bladder cancers studied. The same results were obtained in the infiltrating urinary bladder wall samples. N-RAS gene mutations were observed in all cases (except 1) in which H-RAS gene mutations were detected. The results suggest a strong relationship between H-RAS and N-RAS gene activation in bladder cancer. Changes in the K-RAS gene in bladder cancers seem to be a rare event; this is in agreement with findings of other authors. We found activation of the gene in one specimen of bladder cancer and its infiltration of the urinary bladder wall in the same patient.
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