PTPRC and glioblastoma: Quantifying the percentage of CD45+ leukocytes that were CD11b + myeloid cells, we found a significant difference between DIPG and adult GBM samples (DIPG: 94.80% ± 0.92% vs. adult GBM: 70.34% ± 7.20%, p < 0.005, Fig. 1f).