Head-to-head evidence

ADX-850 vs Zilebesiran

Same mechanism, same race: design-graded trial evidence for both assets, with the grading rationale shown. Grades describe the quality of the evidence, never the merits of either security.

Hypertension

Shared mechanism: Angiotensinogen (AGT) · full Hypertension pipeline

ADX-850

Developed by ADARx Pharmaceuticals

Phase 1 in HypertensionRNAi (siRNA)
not yet graded

No graded featured trial for this indication yet; the grade above reflects that absence, not a judgment.

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Zilebesiran

Developed by Alnylam Pharmaceuticals and partners

Phase 3 in HypertensionRNAi (siRNA)
Reliable signal

NCT04936035 · Phase 2 · completed

The study randomized 394 participants to placebo or zilebesiran and maintained quadruple blinding, with approximately 60–75 participants per treatment group analyzed for the primary endpoint. The primary clinical endpoint—change in 24-hour ambulatory systolic blood pressure at Month 3—was significantly favorable for zilebesiran versus placebo, supporting strong evidence from this trial.

Next expected readout: April 2028 · NCT07553442 (registry estimate)

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The full competitive landscape for each asset (every same-race competitor with aligned evidence, sortable) is on the asset pages: ADX-850's landscape · Zilebesiran's landscape