Response Predictors for Erbb Pathway-Specific Drugs
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United States of America Patent
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Issued Date -
Oct 16, 2008
app pub date -
Oct 17, 2005
filing date -
Oct 15, 2004
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Abandoned
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Abstract
The invention provides a method of determining whether tumor cells or tissue is responsive to treatment with an ErbB pathway-specific drug. In accordance with the invention, measurements are made on such cells or tissues to determine values for total ErbB receptors of one or more types, ErbB receptor dimers of one or more types and their phosphorylation states, and/or one or more ErbB signaling pathway effector proteins and their phosphorylation states. These quantities, or a response index based on them, are positively or negatively correlated with cell or tissue responsiveness to treatment with an ErbB pathway-specific drug. In one aspect, such correlations are determined from a model of the mechanism of action of a ErbB pathway-specific drug on an ErbB pathway. Preferably, methods of the invention are implemented by using sets of binding compounds having releasable molecular tags that are specific for multiple components of one or more complexes formed in ErbB pathway activation. After binding, molecular tags are released and separated from the assay mixture for analysis.
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