Table 1.
Patient Characteristics
| Characteristic | N = 34 |
|---|---|
| Sex | |
| Male | 17 |
| Female | 17 |
| Age (y) | |
| Median | 60.5 |
| Range | 36–77 |
| Race | |
| White | 30 |
| Black | 1 |
| Hispanic | 1 |
| Unknown | 2 |
| Histotype | |
| Adenocarcinoma | 15 |
| Squamous cell carcinoma | 3 |
| Adenosquamous cell carcinoma | 7 |
| Large cell carcinoma | 5 |
| Not otherwise specified | 3 |
| EGFR mutation | |
| Positive | 3 |
| Negative | 17 |
| Unknown | 14 |
| ALK fusion | |
| Positive | 2 |
| Negative | 12 |
| Unknown | 20 |
| Smoking status | |
| Current | 12 |
| Former | 18 |
| Never | 1 |
| Unknown | 3 |
| Interval between lung and brain tumor sampling (d) | |
| Median | 335.5 |
| Range | 0–2618 |
| Clinical stage at the time of lung tumor sampling | |
| Nonmetastatic | 23 |
| Metastatic | 9 |
| Unknown | 2 |