Table 2.

Tumor characteristics.

ID	Tumor location	Surgery before PRE1	EOR surgery 1 (%)	EOR surgery 2 (%)	Tumor
					Surgery 1				Surgery 2				Adjuvant treatment after surgery 1
					Entity	WHO	IDH mutation	1p19q codeletion	Entity	WHO	IDH mutation	1p19q codeletion
1	P	Y	80	100	GBM	IV	Y	-	GBM	IV	Y	-	N
2	P	N	100	–	AA	III	Y	N	no surgery	–	–	–	TMZ
3	P	N	100	100	GBM	IV	N	–	GBM	IV	N	–	RT/TMZ
4	A	Y	100	70	OD	II	N	–	OD	II	N	N	N
5	P	N	100	100	GBM	IV	–	–	GBM	IV	–	–	RT/TMZ
6	A	N	90	–	AA	III	Y	N	no surgery	–	–	–	TMZ
7	A	N	100	80	GBM	IV	–	–	GBM	IV	–	–	RT/TMZ
8	A	N	100	100	DA	II	Y	N	DA	II	Y	N	N
9	A	Y	100	70	AA	III	Y	N	AA	III	Y	N	TMZ
10	P	N	100	–	GBM	IV	N	–	GBM (Biopsy)	IV	N	–	RT/TMZ
11	A	N	100	100	AA	III	Y	N	AA	III	Y	N	TMZ
12	P	Y	100	100	AA	III	N	N	GBM	IV	N	–	RT/TMZ
13	A	Y	100	100	DA	II	Y	N	DA	II	Y	N	TMZ
14	P	N	100	90	GBM	IV	N	–	GBM	IV	N	–	RT/TMZ
15	P	N	100	100	GBM	IV	N	N	GBM	IV	N	N	RT/TMZ
16	A	Y	100	–	AA	III	Y	N	no surgery	–	–	–	TMZ
17	P	N	100	100	GBM	IV	N	–	GBM	IV	N	–	RT/TMZ
18	A	N	100	80	GBM	IV	N	–	GBM	IV	N	–	RT/TMZ

The table shows tumor characteristics of all included patients (A, anterior; P, posterior; Y, yes; N, no; EOR, extent of resection; GTR, gross total resection; STR, subtotal resection; DA, diffuse astrocytoma; AA, anaplastic astrocytoma; OD, oligodendroglioma; GBM, glioblastoma; RT, radiation therapy; TMZ, temozolomide).