Company: ARVN
Filing Date: 2025-02-11
Form Type: 10-K
Source: 0001655759-25-000016
Chunk: 106

Company: ARVINAS, INC.
Filing Date: 2025-02-11
Form: 10-K
Item: Item 1
Chunk 106
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 patients in the study received a median of four prior therapies (median of three in the metastatic setting); 87% were previously treated with a CDK 4 and 6, or CDK4/6, inhibitor; 80% were previously treated with fulvestrant; and 78% were previously treated with chemotherapy, 

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including 48% in the metastatic setting. Patients were treated once daily with oral doses of vepdegestrant at 180 mg (n=2), the RP3D of 200 mg (n=21), 400 mg (n=3) or 500 mg (n=20), plus 125 mg of palbociclib given orally once daily for 21 days, followed by seven days off treatment in 28-day cycles. Detailed data presented at the 2024 ESMO Breast Cancer Annual Congress included:

Clinical Benefit Rate:

•CBR, defined as the rate of confirmed complete response, partial response, or stable disease ≥24 weeks across all dose levels (n = 46) was 63% (95% CI: 47.5 - 76.8), with a CBR of 72% in patients with mutant ESR1 (n=29; 95% CI: 52.8 - 87.3) and a CBR of 53% in patients with wild-type ESR1 (n=15; 95% CI: 26.6 – 78.7).

•CBR in patients dosed at the RP3D of 200 mg (n=21) was 67% (95% CI: 43.0 - 85.4) with a CBR of 79% in patients with mutant ESR1 (n=14; 95% CI: 49.2 - 95.3) and a CBR of 43% in patients with wild-type ESR1 (n=7; 95% CI: 9.9 - 81.6).

Objective Response Rate and Duration of Response:

•The ORR in evaluable patients with measurable disease at baseline (n=31) was 42% (95% CI: 24.5 - 60.9) with a median DOR in 13 responders of 14.6 months (95% CI: 9.5 – not reached). At the RP3D of 200 mg (n=15), the ORR was 53%