Lapa et al. [26] investigated the expression of Chemokine receptor-4 in glioblastoma using the non-invasive 68Ga–Pentixafor-PET-CT imaging thereby allowing for the quantification of Chemokine receptor-4 (CXCR4) and the identification of suitable patients for therapy. This evidence concerns the gene CXCR4 and glioblastoma.