Gallium Ga 68 NNS309

**Semantic type:** Indicator, Reagent, or Diagnostic Aid|Pharmacologic Substance

**Definition:** A radioconjugate composed of NNS309, which targets an as of yet unelucidated target on tumor cells, that is conjugated to the radionuclide gallium (Ga) 68, with potential use in diagnostic imaging using positron emission tomography/computed tomography (PET/CT). Upon administration of gallium Ga 68 NNS309, the NNS309 moiety targets and binds to tumor cells expressing the target. This allows the assessment of binding of NNS309 to tumor cells and the possible therapeutic response to NNS309 conjugated to a radionuclide delivering cytotoxic radiation, such as lutetium Lu 177 (Lu177).

**Synonyms:** - 68Ga-NNS309 - [68Ga]-NNS309