Table 1.

TCGA lung adenocarcinoma cohort characteristics

	n=497 (%)*
Age at diagnosis
Mean	65.3 (range 33–88)
31–40	4 (1%)
41–50	31 (6%)
51–60	117 (24%)
61–70	166 (33%)
71–80	136 (27%)
81–90	24 (5%)
Unknown	19 (4%)
Gender
Male	234 (47%)
Female	263 (53%)
Race
White	367 (74%)
African-American	46 (9%)
Hispanic	7 (1%)
Asian	8 (2%)
American Indian	1 (0%)
Unknown	68 (14%)
Smoking status
Former	292 (59%)
Current	119 (24%)
Never	72 (14%)
Unknown	14 (3%)
Stage**
I	264 (53%)
II	123 (25%)
III	83 (17%)
IV	26 (5%)
Unknown	1 (<1%)
Prior malignancy
No	407 (82%)
Yes	90 (18%)

^*Data were available for 497 of 555 individuals for whom sequence data were analyzed.

^**Lung cancer stage was determined based on American Joint Commission on Cancer (AJCC) criteria, 5th to 7th editions (1991–2013).