Table 1. Characteristics of the samples used in the present study.

Code	Diagnosis	RIN	DV200	Reads	% aligned	Genes with reads
OII-C	Oligodendroglioma, IDH-mutant, 1p/19q-codeleted Grade II	2.30	44	40,109,782	90.44	33,371
OII-A		2.40	49	41,087,894	87.68	30,906
AIII-C	Astrocytoma, IDH-wildtype Grade III	2.40	32	37,484,635	86.32	32,638
AIII-A		2.40	28	45,693,652	86.31	32,639
GS-C	Gliosarcoma, IDH-wildtype Grade IV	2.00	53	44,422,490	91.43	30,970
GS-A		1.90	71	40,142,882	92.84	32,394
GB-C	Glioblastoma, IDH-wildtype Grade IV	2.30	38	39,110,142	89.14	29,967
GB-A		2.10	43	39,923,403	86.57	31,281

C = tumour core resection (TCR); A = cavitational ultrasonic surgical aspirate; RIN = RNA integrity number; DV200 = percentage of fragments >200 nt; Reads = numbers of paired reads; % aligned = % aligned reads to genome of reference.