Table 4 Clinicopathological factors of STZ based treated-19 patients associated with MGMT expression levels.

From: MGMT is frequently inactivated in pancreatic NET-G2 and is associated with the therapeutic activity of STZ-based regimens

Clinicopathological factor (n = 19)

MGMT-positive (n = 10)

MGMT-negative (n = 9)

p value

Clinical factor

 Age, years, median (range)

46 (27–65)

55 (40–75)

0.21

 Sex, male

3

6

0.13

Genetic syndrome

 MEN type 1

0

0

 VHL

0

0

Tumor factor

 Tumor size, mean ± SD, mm

55.7 ± 34.2

56.2 ± 20.7

0.6

 Ki-67 index, mean ± SD

16.4 ± 8.9

12.5 ± 8.7

0.4

 Mitosis, 10 HPF, mean ± SD

5.4 ± 6.8

3.3 ± 3.4

0.78

 Chromogranin A positive

6

7

0.63

 Synaptophysin positive

9

9

0.53

 CD-56 positive

9

8

0.74

 Lymph node metastasis

4

3

0.57

 Liver metastasis

9

8

0.94

  Synchronous

6

7

0.37

  Metachronous

3

1

0.31

 Functionality, nonfunctioning

9

8

0.74

Tumor grade

 NET-G2

6

9

0.054

 NET-G3

4

0

 
  1. HPF high-power fields, MEN multiple endocrine neoplasia, MGMT O6-methylguanine DNA methyltransferase, NET neuroendocrine tumor, STZ streptozocin, VHL von Hippel–Lindau disease.