Abstract: The present disclosure relates to a class of engineered polypeptides having a binding affinity for CD69 and provides a CD69-binding polypeptide comprising the sequence EX2X3X4AX6X7EIX10 X11LPNLX16X17X18QK X21AFKX25X26LKD. The present disclosure also relates to the use of such a CD69-binding polypeptide as a therapeutic, prognostic and/or diagnostic agent.

Abstract: There is provided a composition comprising: (i) a compound of Formula I: (I), or a pharmaceutically acceptable salt thereof, and (ii) a nuclide M, or a pharmaceutically acceptable salt of the compound of Formula I and/or the nuclide M, wherein C is a chelator selected from the group consisting of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA), 1,4,7-triazacyclononane-1,4,7-triacetic acid (NOTA), 1,4,8,11-tetraazacycl otetradecane-1,4,8,11-tetraacetic acid (TETA), diethylenetriaminepentaacetic acid (DTPA), desferrioxamine B (DFO), 1,4,7-Triazacyclononane-1-glutaric acid-4,7-acetic acid (NOTAGA), 2-[4,7,10-Tris(carboxymethyl)-1,4,7,10-tetraza-1-cyclododecyl]glutaric acid (DOTAGA and a derivative of any one of the foregoing chelators, L (Formula L) is a linker: (L), wherein m is an integer within the range of from 1 to 20, and X is NH or C(O) and forms an amide bond, i.e.