Clinical Study
The Frequency of Epidermal Growth Factor Receptor Mutation of Nonsmall Cell Lung Cancer according to the Underlying Pulmonary Diseases
Table 3
Characteristics of patients with an EGFR mutation treated with gefitinib.
| Total number | 43 |
| Age (median, range) | 67, 28–92 | Gender | | Male | 13 | Female | 30 | Smoking-status | | Never | 24 | Ex/Current | 19 | Pack-years of smokers (median, range) | 33, 2.5–225 | Histology | | Adenocarcinoma | 42 | Squamous cell carcinoma | 1 | Clinical stage of NSCLC | | IB | 2 | IIIA | 1 | IIIB | 7 | IV | 22 | Recurrence | 11 | History of chemotherapy before gefitinib treatment | | No | 28 | Yes | 15 | EGFR mutation | | Ex18 G719C | 1 | Ex19 del | 30 | Ex21 L858R | 10 | Ex19 del + Ex21L858R | 1 | Ex19 del + Ex20 T790M | 1 | Chest CT | | Normal | 36 | Emphysema | 6 | Fibrosis | 1 |
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