The average number of detected CD45−/GFP+ cells was 8.453±0.955 cells/4 ml for patients with glioma, while the average number of detected CD45−/GFP+ cells was 0.615±0.107 cells/4 ml for healthy donors in the control group (p < 0.0001, Additional file 1 Figure: S3). Here, PTPRC is linked to glioma.