Table 2.

Clinical and molecular characteristics

Patient characteristics (N = 155)
Age, y
 Median57
 Range33–81
Sex, n (%)
 Female100 (66)
 Male55 (35)
Race, n (%)
 White113 (73)
 Asian30 (19)
 Black11 (7)
 Other1 (1)
Smoking history, n (%)
 Never smoker107 (69)
 Former smoker48 (31)
 Current smoker0
 Median pack-years10
 Range0–96
Pretreatment EGFR mutation, n (%)
 Exon 19 deletion103 (66)
 Exon 21 L858R46 (30)
 Exon 21 L861Q1
Other/double mutations
 Exon 19 deletion + T790M1
 Exon 19 deletion + PIK3CA1
 Exon 21 L861Q and exon 20 R776H1
 Exon 21 L833V and exon 21 H835L1
 Exon 21 L858R and exon 20 R776H1