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Table 1 Patient characteristics (N = 70)

From: Identification of somatic mutations in EGFR/KRAS/ALK-negative lung adenocarcinoma in never-smokers

Characteristic This study Expansion cohorta TCGA-LUADa
Number of patients 16 40 14
Age (years)    
 Median 58.5 63 69
 Range 47 to 79 36 to 87 52 to 79
Sex (%)    
 Male 1 (6) 7 (17) 2 (14)
 Female 15 (94) 29 (73) 12 (86)
 n/a 0 4 (10) 0
Clinical stage (%)   
 I 13 (81) 24 (60) 9 (65)
 II 0 6 (15) 2 (14)
 III 3 (19) 6 (15) 3 (21)
 IV 0 1 (2) 0
 n/a 0 3 (8) 0
Ethnic group (%)    
 Caucasian 0 16 (40) 14 (100)
 Asian 16 (100) 24 (60) 0
  1. aNever-smokers with EGFR/KRAS-negative adenocarcinoma. Mb, megabase; n/a, not available; SD, standard deviation; TCGA-LUAD, The Cancer Genome Atlas - Lung adenocarcinoma.