Table 1 Clinical characteristics of 50 advanced NSCLC cases and the detection of EGFR mutations in primary tumors and metastases
From: Quantification of EGFR mutations in primary and metastatic tumors in non-small cell lung cancer
| Â | No. cases | Mutation rates of primary tumor (%) | Mutation rates of metastases (%) |
|---|---|---|---|
Age | Â | Â | Â |
  >60 | 38 | 100 | 100 |
  ≤60 | 12 | 100 | 75 |
Gender | Â | Â | Â |
  Male | 11 | 100 | 72.7 |
  Female | 39 | 100 | 100 |
Type | Â | Â | Â |
  Adenocarcinoma | 49 | 100 | 95.9 |
  Squamous cell carcinoma | 1 | 100 | 0 |
Stage | Â | Â | Â |
  IIIB | 28 | 100 | 89.3 |
  IV | 22 | 100 | 100 |
Smoking status | Â | Â | Â |
  Smoker | 10 | 100 | 80 |
  Non-smoker | 40 | 100 | 97.5 |