Table 2.
Clinical and pathological features of the 31 untreated patients with NSCLC used in gene expression analysis.
| Characteristics | Number (%) |
|---|---|
| Gender | |
| Male | 13 (42%) |
| Female | 18 (58%) |
| Age | |
| Mean (years) +/- SEM | 68 +/- 9 |
| Range | 51–85 |
| Smoking History | |
| Past/current | 23 (74%) |
| Never smokers | 4 (13%) |
| ND | 4 (13%) |
| Pack-years (years) +/- SEM | 31 +/- 23 |
| Range | 0–80 |
| Histological subtype | |
| Adenocarcinoma | 16 (52%) |
| Squamous cell carcinoma | 14 (45%) |
| Large-cell Neuroendocrine carcinoma | 1 (3%) |
| PTNM stage | |
| I | 14 (45%) |
| II | 11 (36%) |
| III | 6 (19%) |
Pathologic staging of lung cancer was determined according to the new TNM staging classification.66 Histological subtypes were determined according to the classification of the WHO.67 Patients did not receive any pre-operative chemotherapy nor radiotherapy.