Table 1. Patient Characteristics (N = 55).

Demographic and Baseline Characteristics	No. (%)
Age, y
Median	60
Range	31-76
Sex
Men	26 (47.3)
Women	29 (52.7)
KPS score
60	2 (3.6)
70	2 (3.6)
80	37 (67.3)
90	8 (14.5)
100	6 (10.9)
EGFR status*
11	2 (3.6)
21	6 (10.9)
31	47 (85.5)
Histology
Adenocarcinoma	36 (65.5)
Squamous cell carcinoma	12 (22)
Other/unknown	7 (13)
Prior therapy for lung cancer
Chemotherapy	55 (100.0)
Immunotherapy	2 (3.6)
Radiotherapy	26 (47.3)

KPS indicates Karnofsky performance status; EGFR, epidermal growth factor receptor.

^*EGFR staining intensity guidelines: 1+, a faint/barely perceptible membrane staining is detected in more than 10% of the tumor cells; 2+, a weak to moderate membrane staining is present, completely surrounding the cells in more than 10% of the tumor cells; 3+, a strong complete membrane staining is observed in more than 10% of the tumor cells.