Table 4 Postoperative recurrence events and post-recurrence treatment
| Â | Number of patients, n (%) | P | |||||
|---|---|---|---|---|---|---|---|
All(n = 373) | Pretreatment T790M | ||||||
High(n = 151) | Low(n = 222) | ||||||
Recurrence events | 92 | (24.7) | 44 | (29.1) | 48 | (21.6) | 0.11 |
Locoregional | 45 | (12.1) | 21 | (13.9) | 24 | (10.8) | 0.42 |
Distant | 58 | (15.5) | 28 | (18.5) | 30 | (13.5) | 0.19 |
Post-recurrence treatment | Â | Â | |||||
 Local therapy |  |  |  |  |  | ||
 Radiation therapy | 24 |  | 13 |  | 11 | ||
 Surgery | 4 |  | 1 |  | 3 | ||
 Systemic therapy |  |  |  |  |  | ||
 Chemotherapy | 9 |  | 5 |  | 4 | ||
 EGFR-TKI | 53 |  | 25 |  | 28 | ||
 Best Supportive Care | 5 |  | 1 |  | 4 | ||