Glioblastoma multiforme (GBM), characterized by a high rate of proliferation and migration capacity, is an incurable brain tumor in adults. , a member of the IL-1 cytokine superfamily and a disintegrin and metalloproteinase with thrombospondin motifs 5 (ADAMTS5), a family of zinc dependent metalloproteinases are known to have an essential roles in GBM migration and invasion. Previous studies have separately revealed elevated expressions of IL-33 and ADAMTS5 in GBM; however, the interaction between IL-33 and ADAMTS5 in GBM pathogenesis has remained unclear. Here, using publically available GlioVis and GEPIA programs, we showed that mRNA expression of IL-33 and ADAMTS5 is signi cantly high in GBM cells, and a positive correlation between IL-33 and ADAMTS5 was also determined in these cells. In parallel with the mRNA data of IL-33 and ADAMTS5, by Western blot analysis, protein levels were found to be elevated in GBM tissues and increased gradually with the disease progression. Primary GBM cells and low-grade glioma cells were then treated with IL-33 to examine its stimulating effect on ADAMTS5 expression. Exposure to IL-33 raised ADAMTS5 protein levels in a dose-dependent manner. Finally, the wound healing method was performed to con rm the impact of IL-33 on migration in primary GBM cells. IL-33 promoted migration of primary GBM cells three-times higher than untreated GBM cells. Thus, the current study suggests for the rst time that IL-33 might have a role in play a part in GBM progression through induction of ADAMTS5 expression and promotion of migration in GBM cells.