Table 1.

Patients' characteristics.

#	Sex	Age (yrs)	EGFR type	Tissues and genetic testing
				Before osimertinib		After osimertinib
1	F	62	L858R	Lung	NGS	Pleura	NGS
2	M	85	19 del	SL	ARMs-PCR	Lung	NGS
3	M	66	19 del	Bone	ARMs-PCR	Lung	NGS
4	F	79	L858R	Lung	ARMs-PCR	Lung	NGS
5	F	89	19 del	Lung	NGS	Lung	NGS
6	F	66	19 del	Serum	ARMs-PCR	Bone	NGS
7	M	56	19 del	Lung	ARMs-PCR	Lung	NGS
8	F	75	19 del	Pleura	ARMs-PCR	Pleura	NGS
9	M	51	19 del	Lung	ARMs-PCR	Lung	NGS
Median		66

SL denotes supraclavicular lymph node.