Accordingly to direct sequencing analysis, these tumours included 70 EGFR wild-type and 19 EGFR mutants: 11 with exon 19 deletions, of which nine with E746-A750del and two with complex deletions, L747-A750>P and L747-P753>S; five with L858R; and three with exon 20 insertions. Here, EGFR is linked to neoplasm.