TABLE 10.

Summary of Studies of the Concordance of EGFR Mutations in Primary Versus Metastatic Tumors in the Same Patient^a

	Primary Tumor
Metastatic Lesions	EGFR+	EGFR−
EGFR+	108	6
EGFR−	11	183

^aData derived from Park et al⁵⁷; Yatabe et al⁸⁰; and Sun et al.³⁰³