To: letters@nytimes.com
http://www.nytimes.com/2009/
To the Editor:
This latest clinical result says as much about the limits of current chemotherapy in the clinic as it does about the limits of the predictive test for relapse. Chemotherapy is not a single strategy. Although most patients are still getting agents developed decades ago, recent years have seen great strides in novel, targeted cancer therapies. The first of these are only now reaching clinical practice. It would be a grave error to stop efforts at early detection of cancers that might respond to modern therapies just because it didn't find cancers that were sensitive to an older generation of chemotherapy.
Barry Levine
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