Table 1 Clinicopathological characteristics for patients who received temozolomide

From: A novel analytical model of MGMT methylation pyrosequencing offers improved predictive performance in patients with gliomas

 

Frozen tissue

FFPE samples

  

Total (200)

The cohort A (86)

The cohort B (49)

The validation cohort (65)

Age (years)

Median (range)

44 (17–79)

43 (19–72)

46 (24–79)

45 (17–69)

Age ≥ 45

100 (50%)

41 (48%)

26 (53%)

33 (51%)

Age < 45

100 (50%)

45 (52%)

23 (47%)

32 (49%)

Gender

Male

126 (63%)

54 (63%)

33 (67%)

39 (60%)

Female

74 (37%)

32 (37%)

16 (33%)

26 (40%)

KPS score

KPS ≥ 80

103 (52%)

44 (51%)

26 (53%)

33 (51%)

KPS < 80

87 (44%)

37 (43%)

21 (43%)

29 (45%)

N/A

10 (5%)

5 (6%)

2 (4%)

3 (5%)

WHO grade

III

81 (41%)

35 (41%)

24 (49%)

22 (34%)

IV

119 (60%)

51 (59%)

25 (51%)

43 (66%)

WHO 2016 classification

Anaplastic Oligo, IDH-mutant, 1p/19q codeletion

8 (4%)

3 (3%)

3 (6%)

2 (3%)

Anaplastic Astro, IDH-mutant

34 (17%)

21 (24%)

8 (16%)

5 (8%)

Anaplastic Astro, IDH-wildtype

30 (15%)

11 (13%)

13 (27%)

6 (9%)

Glioblastoma, IDH-mutant

28 (14%)

11 (13%)

6 (12%)

11 (17%)

Glioblastoma, IDH-wildtype

84 (42%)

36 (42%)

18 (37%)

30 (46%)

Anaplastic Astro, NOS a

9 (5%)

2 (2%)

0 (0%)

7 (0%)

Glioblastoma, NOSa

7 (4%)

2 (2%)

1 (2%)

4 (17%)

1p19q codeletion

Codel

8 (4%)

3 (3%)

3 (6%)

2 (3%)

Non-codel

192 (96%)

83 (97%)

46 (94%)

63 (97%)

IDH1/2 mutation

Mutation

70 (35%)

35 (41%)

17 (35%)

18 (28%)

Wildtype

114 (57%)

47 (55%)

31 (63%)

36 (55%)

N/A

16 (8%)

4 (5%)

1 (2%)

11 (17%)

  1. Oligo oligodendroglioma, Astro astrocytoma
  2. aNOS refers to the IDH status is lacking. And the 1p/19q of these gliomas are non-codeletion in this study