Table 1.

Clinical characteristics

Characteristic (N = 23)PIK3CA positive (N = 23)PIK3CA negative (N = 1,102)P-value
Age, median (range)66 (34–78)66 (24–96)0.99
Sex, female (%)13 (57%)602 (55%)0.83
Smoking history
 Never8 (35%)280 (25%)0.34
 Ever-smoker
  Former10 (43%)668 (61%)
  Current5 (22%)154 (14%)
Stage
 Early (IA–IIIA)9 (39%)644 (58%)0.2
 Advanced (IIIB/IV)14 (61%)458 (42%)