Recent studies have revealed that ADAMTS9‐AS2 is down‐regulated in multiple cancers including lung,30, 31 oesophageal,32 gastric,33 colon34 and breast,35, 36 ovarian37 and bladder38 cancers, as well as glioblastoma.39 This evidence concerns the gene ADAMTS9-AS2 and glioblastoma.