Table 1.

Clinical characteristics of all patients

Characteristics	Patients (n = 36)
Age
Mean	63.4
Range	44‐79
Gender (%)
Male	12
Female	24
Smoking status
Non‐smoker	32
Current‐smoker	4
Previous lines of therapy
0	0
1	19
2	11
3	5
Treatment before osimertinib
Gefitinib/Erlotinib/lcotinib	15
Chemotherapy	2
Gefitinib/Erlotinib/lcotinib + chemotherapy	19
Treatment‐native	0
EGFR mutation status
Exon 19 deletion	24
L858R	11
Exon 20 mutation	1