Table 3 Clinicopathological factors of 19 patients with Pan-NET who underwent evaluations of MGMT expression before STZ-based treatment.

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

Characteristics

Total n = 19

 Age, years, median (range)

52 (27–75)

 Sex, male/female

9/10

Genetic syndrome

 MEN type 1

0

 VHL

0

Tumor factor

 Tumor size, mean ± SD, mm

56.0 ± 31.0

 Ki-67 index, mean ± SD

14.6 ± 16.2

 Mitosis, 10 HPF, mean ± SD

4.4 ± 17.0

 Chromogranin A positive

13

 Synaptophysin positive

18

 CD-56 positive

17

 Lymph node metastasis

7

 Liver metastasis

17

  Synchronous

13

  Metachronous

4

 Functionality, nonfunctioning

17

Tumor grade

 NET-G2

15

 NET-G3

4

STZ treatment

 Month on treatment, median (range)

8.0 (0.8–31.7)

STZ treatment line

 2nd

6

 3rd

6

 4th or later

7

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