The present invention describes polynucleotides that have been discovered to correlate to the relative sensitivity or resistance of cells, e.g., breast
cell lines, to treatment with compounds that interact with and modulate, e.g., inhibit,
protein tyrosine kinases, such as, for example, members of the
Src family of
tyrosine kinases, e.g., Src, Fgr, Fyn, Yes, Blk, Hck, Lck and Lyn, as well as other
protein tyrosine kinases, including, Bcr-
abl, Jak, PDGFR, c-kit and Eph receptors. These polynucleotides have been shown to have utility in predicting the resistance and sensitivity of breast
cell lines to the compounds. Such polynucleotides comprise
polynucleotide predictor or marker sets useful in methods of predicting
drug response, and as prognostic or diagnostic indicators in
disease management, particularly in those
disease areas, e.g.,
breast cancer, in which signaling through one or more of the aforementioned Src tyrosine and
protein tyrosine kinases is involved with the
disease process.