Interestingly, DUSP26 was mainly expressed in normal brain cells located within the tumor region such as neurons, oligodendrocyte precursor cell (OPC) cells, and oligodendrocytes, whereas, only a fraction of neoplastic cells from one of four brain tumors had DUSP26 expression, while neoplastic cells from remaining three tumors had negligible DUSP26 expression (Figure 1D). This evidence concerns the gene DUSP26 and brain neoplasm.