Table 1.
Clinical or Molecular Feature | All Cases
|
FASN Negative
|
FASN Positive
|
P | |||
---|---|---|---|---|---|---|---|
No. | % | No. | % | No. | % | ||
Total No. | 647 | 563 | 84 | ||||
Sex | .68 | ||||||
Male, HPFS | 287 | 44 | 248 | 44 | 39 | 46 | |
Female, NHS | 360 | 56 | 315 | 56 | 45 | 54 | |
Age, years | .37 | ||||||
Mean | 66.6 | 66.7 | 65.7 | ||||
SD | 8.3 | 8.0 | 10.0 | ||||
Prediagnosis BMI, kg/m2 | .002 | ||||||
Mean | 26.5 | 26.6 | 25.2 | ||||
SD | 4.7 | 4.8 | 3.7 | ||||
BMI, kg/m2 | .04 | ||||||
< 25 | 262 | 42 | 219 | 40 | 43 | 52 | |
25-27.5 | 155 | 25 | 132 | 24 | 23 | 28 | |
27.5-30 | 98 | 16 | 89 | 16 | 9 | 11 | |
≥ 30 | 108 | 17 | 101 | 19 | 7 | 8.5 | |
Year of diagnosis | .77 | ||||||
Before 1990 | 100 | 15 | 86 | 15 | 14 | 17 | |
1990 to 1999 | 471 | 73 | 409 | 73 | 62 | 74 | |
2000 to 2002 | 76 | 12 | 68 | 12 | 8 | 9.5 | |
Tumor location* | .17 | ||||||
Proximal | 371 | 58 | 317 | 57 | 54 | 65 | |
Distal | 268 | 42 | 239 | 43 | 29 | 35 | |
Tumor stage | .01 | ||||||
I | 135 | 21 | 118 | 21 | 17 | 20 | |
II | 222 | 34 | 181 | 32 | 41 | 49 | |
III | 162 | 25 | 143 | 25 | 19 | 23 | |
IV | 82 | 13 | 79 | 14 | 3 | 3.6 | |
Unknown | 46 | 7.1 | 42 | 7.5 | 4 | 4.8 | |
Tumor grade | .78 | ||||||
Low | 573 | 89 | 499 | 89 | 74 | 88 | |
High | 71 | 11 | 61 | 11 | 10 | 12 | |
MSI | 0.01 | ||||||
Low/MSS | 514 | 81 | 455 | 83 | 59 | 71 | |
High | 119 | 19 | 95 | 17 | 24 | 29 | |
CIMP | .39 | ||||||
Low/0 | 523 | 81 | 458 | 81 | 65 | 77 | |
High | 124 | 19 | 105 | 19 | 19 | 23 | |
KRAS mutation | .70 | ||||||
Negative | 403 | 63 | 352 | 64 | 51 | 61 | |
Positive | 233 | 37 | 201 | 36 | 32 | 39 | |
BRAF mutation | .73 | ||||||
Negative | 520 | 84 | 451 | 84 | 69 | 85 | |
Positive | 100 | 16 | 88 | 16 | 12 | 15 | |
p53 expression | .83 | ||||||
Negative | 393 | 61 | 342 | 61 | 51 | 62 | |
Positive | 250 | 39 | 219 | 39 | 31 | 38 |
Abbreviations: FASN, fatty acid synthase; HPFS, Health Professionals Follow-Up Study; NHS, Nurses’ Health Study; SD, standard deviation; BMI, body mass index; MSI, microsatellite instability; MSS, microsatellite stable; CIMP, CpG island methylator phenotype.
Proximal colon includes cecum to transverse colon, and distal colon includes splenic flexure to sigmoid colon.