MGMT and glioma: As for transcriptome classifications, tRFdb-3003a and tRFdb-3003b may be more expressed in the proneural subtype of gliomas; although, no significant correlation was found between tRFdb-3003a/b expressions and other pathological characteristics such as sex, grades, MGMT promoter methylation, BRAF, and TERT status (all P > 0.05).