Table 1 Epidemiological data of samples

Diffuse Astrocytoma

284

43

120/164

45 (5–81)

- Low grade (WHO II)

II

136

14

61/75

43 (9–77)

- Anaplastic (WHO III)

III

148

29

59/89

47 (5–81)

Oligoastrocytoma

71

23

29/42

43 (5–79)

- Low grade (WHO II)

II

38

12

15/23

43 (5–79)

- Anaplastic (WHO III)

III

33

11

14/19

43 (21–71)

Oligodendroglioma

83

32

44/39

48 (24–81)

- Low grade (WHO II)

II

35

7

16/19

46 (24–81)

- Anaplastic (WHO III)

III

48

25

28/20

50 (20–79)

Glioblastoma

IV

415

57

169/246

57 (4–87)

- Primary

IV

364

60

145/219

58 (4–87)

- Secondary

IV

30

30

12/18

46 (26–68)

- With oligodendroglial component

IV

13

3

3/10

61 (45–82)

- With PNET component

IV

1

0

0/1

54

- Gliosarcoma

IV

7

2

7/0

66 (53–75)

Ependymoma

112

25

50/62

41 (2–82)

- Low grade (WHO II)

II

51

4

27/24

47 (2–82)

- Anaplastic (WHO III)

III

26

11

11/15

35 (2–78)

- Myxopapillary

I

24

8

7/17

36 (17–75)

- Subependymoma

I

11

2

5/6

55 (44–75)

Pilocytic astrocytoma

I

74

15

41/33

22 (2–78)

- Pilomyxoid (WHO II)

II

2

1

1/1

8 (2–14)

- Anaplastic (WHO III)

III

2

1

1/1

25 (24–25)