On October 24, 2025 Arvinas, Inc. (Nasdaq: ARVN), a clinical-stage biotechnology company creating a new class of drugs based on targeted protein degradation, reported preclinical data for ARV-806, a PROTAC KRAS G12D degrader, at the 2025 AACR (Free AACR Whitepaper)-NCI-EORTC AACR-NCI-EORTC (Free AACR-NCI-EORTC Whitepaper) International Conference on Molecular Targets and Cancer Therapeutics (EORTC-NCI-AACR) (Free ASGCT Whitepaper) (Free EORTC-NCI-AACR Whitepaper) in Boston, Massachusetts. The ARV-806 data presented show a differentiated profile based on degradation potency, antiproliferative activity, and induction of cancer cell death. ARV-806 is designed to target both the ON and OFF forms of KRAS G12D, which is the most common mutation of the KRAS protein. ARV-806 has the potential to address high unmet need in solid tumors, such as pancreatic, colorectal and non-small cell lung cancer.

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"These data suggest the potential of targeted protein degradation to overcome historical limitations in addressing undruggable KRAS mutations," said Angela Cacace, Ph.D., Chief Scientific Officer of Arvinas. "ARV-806’s ability to eliminate both ON and OFF forms of KRAS G12D, combined with its potency and durability shown in preclinical models, supports our confidence in its clinical potential to deliver meaningful benefit for patients with KRAS G12D-mutated cancers."

Key highlights from the presentation include:

In vitro, ARV-806 degraded KRAS G12D with picomolar potency across pancreatic, colorectal, and lung cancer cell lines but did not induce degradation of wild-type and other mutant RAS isoforms.
ARV-806 is differentiated from other KRAS G12D targeting agents in development and has potential to be a best-in-class therapy for KRAS G12D mutated cancers due to:
Catalytic activity, which allows it to overcome upregulation, a common mechanism of resistance to inhibitor treatment
Compared with clinical-stage KRAS G12D ON and OFF inhibitors and another clinical-stage G12D degrader, ARV-806 demonstrated:
>25-fold greater potency in reducing cancer cell proliferation,
>40-fold higher potency in degrading KRAS G12D protein (versus the comparable clinical-stage G12D degrader), and
>10-fold lower concentrations required to induce pro-apoptotic BIM expression.
Following a single intravenous dose in a colorectal tumor xenograft model, ARV-806 degraded >90% of KRAS G12D for seven days, with parallel suppression of c-MYC (a key driver of cancer cell proliferation) and induction of BIM (Bcl-2-interacting mediator of cell death, a pro-apoptotic factor) for ≥5 days.
ARV-806 demonstrated robust efficacy responses at low doses in tumor models including: ≥30% tumor volume reductions in pancreatic and colorectal cell line-derived xenograft (CDX) models and a patient-derived xenograft (PDX) model of lung cancer.

These data demonstrate sustained pharmacodynamic activity consistent with long-lasting target degradation, which we believe supports intermittent clinical dosing. Arvinas is currently evaluating ARV-806 in a Phase 1 clinical trial in patients with KRAS G12D–mutated advanced solid tumors (NCT07023731).

Also shown in the poster, orally bioavailable pan-KRAS degraders have been identified that potently degrade multiple variants of KRAS and spare other RAS isoforms. A tool pan-KRAS PROTAC demonstrated robust single-agent activity and superior combination efficacy with immune checkpoint blockade compared with a pan-RAS ON inhibitor (7 complete responses compared with 2 complete responses).

About ARV-806
ARV‑806 is a novel, investigational PROTAC degrader designed to selectively target and degrade mutant Kirsten rat sarcoma (KRAS) G12D which is the most common mutation of the KRAS protein. Therefore, ARV-806 has the potential to address high unmet need in solid tumors, such as pancreatic, colorectal and lung cancer. ARV‑806 is currently being evaluated in a Phase 1 clinical trial in patients with advanced solid tumors harboring KRAS G12D mutations.

(Press release, Arvinas, OCT 24, 2025, View Source [SID1234656974])