Ghorbani et al. investigated four potential biomarkers—glial fibrillary acidic protein (GFAP), neurofilament light (NfL), matrix metalloproteinase 3 (MMP3), and fatty acid-binding protein type 4 (FABP4)—as non-invasive markers for glioblastoma. This evidence concerns the gene MMP3 and glioblastoma.