Table 1. MGMT status in 107 neuroendocrine tumours.

		Tumour location				Histological grade
	All patient (n=107)	Pancreas (n=62)	GI tract (n=33)	Lung (n=5)	Other (n=7)	G1 (n=41)	G2 (n=57)	G3 (n=9)
MGMT promoter methylation, MS-PCR	P		0.11				0.17
Non-interpretable	8	7	0	0	1	6	1	1
Non-methylated	87	51	27	5	4	32	48	7
Methylated	12	4	6	0	2	3	8	1
MGMT promoter methylation, pyrosequencing	P		0.41				0.12
Non-interpretable	8	7	0	0	1	6	1	1
Non-methylated	75	40	27	1	4	29	41	5
Methylated	24	15	6	4	2	6	15	3
MGMT protein expression, immunohistochemistry	P		0.45				0.64
Non-interpretable	18	12	4	2	0	8	10	0
Positive	60	32	22	2	4	24	30	6
Negative	29	18	7	1	3	9	17	3

Abbreviations: GI=gastrointestinal; MGMT=O⁶-methylguanine-DNA methyltransferase; MS-PCR=methyl-specific PCR.