OnCo
pairingsPairing

SSTR PET → PRRT

SSTR PET followed by PRRT is the original theranostic pair: the scan with the diagnostic isotope decides who gets the same molecule with the therapeutic isotope.

NETTER-1/2 and COMPETE required SSTR-avid disease on imaging; uptake intensity (Krenning ≥3) and absence of FDG-avid SSTR-negative lesions predict benefit. The template later copied by PSMA theranostics.

Rationale
Identical peptide chemistry means imaging biodistribution predicts therapy delivery.
Evidence
Embedded in all pivotal PRRT trials.

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