| 摘要 |
We identify markers capable of guiding the decision to incorporate epidermal growth factor receptor (EGFR) inhibitors, in particular EGFR tyrosine kinase inhibitors (TKIs), into chemotherapeutic regimens. Mitogen-inducible gene 6 (Mig6), a negative regulator of EGFR, is selectively upregulated during the development of resistance to the EGFR tyrosine kinase inhibitor (TKI) erlotinib, resulting in decreased EGFR phosphorylation. The ratio of Mig6/EGFR expression highly correlates with erlotinib sensitivity. A low Mig6/EGFR ratio correlates with a high response rate to gefitinib and a marked increase in progression-free survival for patients. The ratio of Mig6 to EGFR is a major predictor of biologic and clinical responses to EGFR inhibitors.
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