FURIN and neoplasm: The cleavage of RVRR linker could generate amphiphilic oligomers (CBT‐Ga‐Dimer and CBT‐Ga‐Trimer) which would self‐assemble into nanoparticles CBT‐Ga‐NPs, resulting in prolonged radioactivity retention in MDA‐MB‐468 cancer cells and an 9.1‐fold signal enhancement of tumor/liver ratio compared to the control.[67] In addition, by using the RVRR linker, the same group also designed a 18F‐based PET tracer, [18F]1, which was able to spontaneously condensate between the intermediates to produce a rigid and lipophilic dimer ([18F]1‐dimers) responding to the furin activity.