Pendetide
# Pendetide

Pendetide (GYK-DTPA) is a chelating agent. It consists of pentetic acid (DTPA) linked to the tripeptide glycine (G) – L-tyrosine (Y) – L-lysine (K).

## Use

The following monoclonal antibodies are linked to pendetide to chelate a radionuclide, indium-111. The antibodies selectively bind to certain tumour cells, and the radioactivity is then used for imaging of the tumours.

* Indium $(^{111}In)$ capromab pendetide (prostate cancer)
* Indium $(^{111}In)$ satumomab pendetide (other cancer types)
