Table 3. Concordance between FoundationOne Liquid CDx and cobas EGFR Mutation Test v2 for EGFR exon 19 deletions and exon 21 L858R alterations.

	Ref1 Positive			Ref1 Negative
	Ref2 Positive	Ref2 Negative	Total	Ref2 Positive	Ref2 Negative	Total
cfDNA CGP Positive	80	4	84	1	3	4
cfDNA CGP Negative	2	0	2	0	87	87
Total	82	4	86	1	90	91

cfDNA = cell-free DNA; CGP = FoundationOne Liquid CDx; Ref1 = reference assay replicate 1; Ref2 = reference assay replicate 2.