Human EGFR Mutations Quantitative Detection Kit (Real-time Fluorescent PCR Method)

In this clinical trial, investigators select FFPE and plasma samples of non-small cell lung cancer which are used for quantitative detection of four kinds of EGFR(Epidermal Growth Factor Receptor) mutations. By the following two aspects, investigators evaluate the clinical performance of the EGFR quantitative kits. 1. methodology validation: To certify the equivalence between the EGFR quantitative kit and the common used detection methods. 2. analysis of the relationship between the type and proportion of EGFR sensitive mutation and EGFR-TKI benefit.