Table 1. EGFR sensitive mutations (c.2235_2249del/c.2236_2250del or/and p.L858R) in cfDNA and FFPE samples.

FFPE	Mutation (−)	Mutation (+)	Total
cfDNA
Mutation (+)	3	23	26
Mutation (−)	64	17	81
Total	67	40	107