Table 4.

Comparison of NSCLC patient clinical response to prior EGFR TKI therapy and known EGFR T790M–containing tumors with detection of EGFR T790M using plasma DNA

Plasma EGFR T790M
YesNo
Response to prior EGFR TKI Therapy
    Partial response281513
    Stable disease14410
    Progressive disease808
    Untreated404
Tumor EGFR T790M752