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Characteristics of patients
| Characteristics | N=60 | Exon 21 mutation n, (%)
|
Exon 19 deletion n, (%)
|
|---|---|---|---|
| n=33 | n=27 | ||
| Sex | |||
| Female | 44 | 23 (69.7) | 21 (77.8) |
| Male | 16 | 10 (30.3) | 6 (22.2) |
| Age | |||
| >60 years | 34 | 22 (66.7) | 12 (44.4) |
| £60 years | 26 | 11 (33.3) | 15 (55.6) |
| Median age, years (range) | 62 (31–84) | 63 (39–84) | 59 (31–77) |
| Smoking history | |||
| Never | 56 | 30 (90.9) | 26 (96.3) |
| Ever | 4 | 3 (9.1) | 1 (3.7) |
| Gefitinib therapy | |||
| First line | 41 | 22 (66.6) | 19 (70.3) |
| Second line | 19 | 11 (33.3) | 8 (29.6) |
