OnCo
pairingsPairing

G12D-selective + pan-RAS(ON) inhibitor (zoldonrasib + daraxonrasib)

A drug that hits the exact mutation plus a drug that hits every RAS protein, so the tumour cannot escape through a wild-type RAS cousin.

ESMO GI 2026: 50% ORR and 97% DCR in second-line RAS G12D metastatic PDAC, with a manageable safety profile. Rationale is vertical suppression of adaptive RAS reactivation.

Rationale
Mutant-selective inhibition spares normal tissue, while pan-RAS coverage blocks the wild-type RAS and secondary-mutation escape routes seen with single agents.
Evidence
Phase 1/2, n=60, 2026.

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