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. 2020 Feb 17;2(1):vdaa001. doi: 10.1093/noajnl/vdaa001

Table 2.

Survival Differences Based on HFE Group, MGMT Status, Sex, and Temozolomide Therapy

All Data Low HFE mRNA (<Median) High HFE mRNA (≥Median)
N Deaths Median (CI) P N Deaths Median (CI) P N Deaths Median (CI) P
Sex Male 283 242 12.7 (11.9–14.0) 142 120 12.6 (10.9–13.9) 141 122 12.9 (11.9–14.9)
Female 177 142 12.5 (10.5–15.3) 78 62 14.7 (11.5–20.1) 99 80 10.7 (8.6–14.9)
Log rank .8 .07 .1
CoxPHa .049* .003** .7
MGMT Methylated 128 100 15.3 (12.9–17.8) 66 54 16.9 (13.8–21.2) 62 46 13.6 (10.7–18.1)
Unmethylated 173 132 12.2 (10.7–14.0) 85 66 11.5 (10.1–13.3) 88 66 12.9 (10.8–14.9)
Log rank .002** .002** .4
CoxPHa .12 .014* .6
Sex and MGMT (All therapy) Male: Methylated 66 55 13.3 (10.7–17.6) 40 35 13.3 (10.2–19.5) 26 20 12.9 (7.6–20.4)
Female: Methylated 62 45 17.8 (13.8–21.3) 26 19 24.9 (17.8–33.2) 36 26 13.6 (7.0–20.7)
Male: Unmethylated 112 87 12.6 (10.6–14.0) 57 45 10.9 (9.5–14.0) 55 42 12.9 (11.9–15.0)
Female: Unmethylated 61 45 11.7 (9.9–17.5) 28 21 11.7 (9.9–22.2) 33 24 12.2 (8.8–17.9)
Log rank .001** <.0001**** .7
CoxPHb .002** <.0001**** .3
Temozolomide Therapy Male: Methylated 47 38 16.5 (13.3–20.8) 31 26 16.1 (12.7–21.1) 16 12 18.1 (12.9-NA)
Female: Methylated 43 28 20.7 (15.6–26.9) 19 14 25.7 (19.9-NA) 24 14 15.6 (12.4-NA)
Male: Unmethylated 81 60 12.9 (12.2–14.9) 40 31 12.7 (11.3–15.4) 41 29 13.9 (12.6–16.6)
Female: Unmethylated 38 27 14.5 (10.2–21.9) 18 13 11.7 (9.9-NA) 19 14 14.9 (12.2-NA)
Log rank .0002*** <.0001**** .2
CoxPHb .0008*** .0002*** .6
No Temozolomide Therapy Male: Methylated 18 17 3.1 (2.0–7.6) 9 9 2.0 (1.1-NA) 9 8 5.9 (2.8-NA)
Female: Methylated 15 14 6.6 (3.6–25.4) 5 4 15.1 (3.6-NA) 10 10 5.5 (2.3-NA)
Male: Unmethylated 27 23 5.8 (1.6–10.6) 16 13 7.6 (1.1-NA) 11 10 5.3 (1.6-NA)
Female: Unmethylated 20 16 6.6 (4.6–17.5) 8 7 6.1 (4.1-NA) 12 9 9.1 (2.9-NA)
Log rank .06 .05 .7
CoxPHb .06 .03* .8

NA, upper confidence interval could not be calculated/infinity.

aCoxPH P-value based on hazard coefficients.

bRobustified CoxPH P-value for the overall model fit.

*P-value < .05, **P-value < .01, ***P-value < .001, ****P-value < .0001.