DPI-4452 is a CAIX-targeting cyclic peptide with a DOTA chelator. DPI-4452 can be chelated with radionuclide for CAIX-expressing tumor PET-CT imaging. DPI-4452 was used to prepare [68Ga]Ga-DPI-4452, which is a first-in-class carbonic anhydrase IX-binding radiolabeled peptide, and is the imaging agent of a theranostic pair with [177Lu]Lu-DPI-4452, developed for selecting and treating patients with carbonic anhydrase IX-expressing tumors. [68Ga]Ga-DPI-4452 showed exceptional tumor uptake in patients with clear cell renal cell carcinoma, with very high tumor-to-background ratios and no significant adverse events, suggesting potential diagnostic and patient selection application.

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.