Table 1.
Patient characteristics at the time of initial lung cancer diagnosis
| Characteristics | EGFR mutant (n = 41) (n [%]) | EGFR wild-type (n = 52) (n [%]) | Total (n = 93) (n [%]) |
|---|---|---|---|
| Mean age ± SD (yrs) | 60.4 ± 14.1 | 61.3 ± 10.1 | 60.9 ± 12.0 |
| Gender | |||
| Male | 18 (44) | 13 (25) | 31 (33) |
| Female | 23 (56) | 39 (75) | 62 (67) |
| Race | |||
| Caucasian | 37 (90) | 49 (94) | 86 (93) |
| African American | 0 (0) | 0 (0) | 0 (0) |
| Asian | 2 (5) | 3 (6) | 5 (5) |
| Other | 2 (5) | 0 (0) | 2 (2) |
| Histology | |||
| Adenocarcinoma | 40 (98) | 47 (90) | 87 (94) |
| Squamous | 0 (0) | 1 (2) | 1 (1) |
| Large Cell | 1 (2) | 0 (0) | 1 (1) |
| Other | 0 (0) | 4 (8) | 4 (4) |
| Stage | |||
| I | 4 (10) | 5 (10) | 9 (10) |
| II | 2 (5) | 2 (4) | 4 (4) |
| IIIA | 4 (10) | 5 (10) | 9 (10) |
| IIIB | 1 (2) | 3 (6) | 4 (4) |
| IV | 30 (73) | 37 (71) | 67 (72) |
| Smoking history | |||
| Ever | 14 (34) | 39 (75) | 53 (57) |
| Never | 27 (66) | 13 (25) | 40 (43) |
| Sites of metastatic diseasea | |||
| Brain | 20 (67) | 24 (65) | 44 (66) |
| Lung | 22 (73) | 15 (41) | 37 (55) |
| Liver | 11 (37) | 6 (16) | 17 (25) |
| Bone | 18 (60) | 11 (30) | 29 (43) |
| Other | 6 (20) | 9 (24) | 15 (22) |
aIn patients with stage IV disease at diagnosis, rows do not necessarily total 100%, as all sites of disease were categorized for each patient.