In addition, 89Zr-labeled PEGylated anti-CD11b VHHs (antigen binding fragment of heavy chain only antibodies) and [89Zr]anti-CD11b antibody (clone M1/70) were reported for immune-PET imaging of the myeloid compartment in colorectal cancer or glioblastoma, respectively 56, 57. The gene discussed is ITGAM; the disease is glioblastoma.