Drugs / Zilebesiran
last change Aug 2026 re-read 9 days ago

Zilebesiran

also known as ALN-AGT01 · AD-85481 · ALN-85481
Developed for
hypertensive disorder · atherosclerotic cardiovascular disease · essential hypertension
Investigated by
Alnylam Pharmaceuticals · Hoffmann-La Roche

Trials 6

PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 11 trial
Phase 1 NCT03934307 May 2019 → Apr 2022 hypertensive disorder Alnylam Pharmaceuticals Completed No outcome recorded
Phase 1/21 trial
Phase 1/2 NCT06423352 Jun 2024 → Jul 2025 hypertensive disorder Alnylam Pharmaceuticals Completed No outcome recorded
Phase 23 trials · 2 met primary · 1 missed
Phase 2 NCT06272487 Feb 2024 → Jun 2025 hypertensive disorder Alnylam Pharmaceuticals Completed Missed primary
Phase 2 NCT05103332 Nov 2021 → Dec 2023 essential hypertension Alnylam Pharmaceuticals Completed Met primary
Phase 2 NCT04936035 Jul 2021 → Apr 2023 hypertensive disorder Alnylam Pharmaceuticals Completed Met primary
Phase 31 trial
Phase 3 NCT07181109 Sep 2025 → Sep 2030 expected atherosclerotic cardiovascular disease, hypertensive disorder Alnylam Pharmaceuticals Recruiting No outcome recorded
Comparator or background therapy1 trial
Phase 2 NCT07553442 Background Apr 2026 → Apr 2028 expected hypertensive disorder Alnylam Pharmaceuticals Recruiting No outcome recorded

News releases announcing trial results or a regulatory action · 12

DateIssuerRelease
2026-08-30 Alnylam Pharmaceuticals Results Alnylam Presents New Data at ESC Congress 2026 Reinforcing Strength in RNAi-Powered TTR Silencing Across ATTR-CM Patient Populations and Treatment Settings alnylam.com ↗
New Subgroup Analysis from KARDIA-3 Phase 2 Study of Zilebesiran Highlights Potential to Provide Enhanced Blood Pressure Control
2026-08-30 Alnylam Pharmaceuticals Results Alnylam Presents New Data at ESC Congress 2026 Reinforcing Strength in RNAi-Powered TTR Silencing Across ATTR-CM Patient Populations and Treatment Settings alnylam.com ↗
New Subgroup Analysis from KARDIA-3 Phase 2 Study of Zilebesiran Highlights Potential to Provide Enhanced Blood Pressure Control
2026-03-30 Alnylam Pharmaceuticals Results New Data Presented at ACC.26 Further Support Benefits of Vutrisiran in ATTR-CM and Potential of Zilebesiran for Hypertension Management alnylam.com ↗
Pooled Phase 2 Safety Data Reinforce Encouraging Safety Profile for Zilebesiran Across a Broad Population of Patients with Hypertension
2026-03-30 Alnylam Pharmaceuticals Results New Data Presented at ACC.26 Further Support Benefits of Vutrisiran in ATTR-CM and Potential of Zilebesiran for Hypertension Management alnylam.com ↗
Pooled Phase 2 Safety Data Reinforce Encouraging Safety Profile for Zilebesiran Across a Broad Population of Patients with Hypertension
2024-04-07 Alnylam Pharmaceuticals Results Alnylam Presents Positive Results from the KARDIA-2 Phase 2 Study of Zilebesiran Added to Standard of Care Antihypertensives in Patients with Inadequately Controlled Hypertension alnylam.com ↗
2024-03-05 Hoffmann-La Roche Results Roche and Alnylam report positive topline results from the Phase II KARDIA-2 study in people with hypertension, demonstrating clinically significant blood pressure reductions with zilebesiran when added to standard of care roche.com ↗
People with mild to moderate hypertension treated with zilebesiran added to a standard of care hypertension medication experienced a clinically and statistically significant reduction in systolic blood pressure at month three.
2024-03-05 Alnylam Pharmaceuticals Results Alnylam Reports Positive KARDIA-2 Topline Study Results Demonstrating Clinically Significant Blood Pressure Reductions When Zilebesiran is Added to Standard of Care Antihypertensives alnylam.com ↗
Zilebesiran demonstrated an encouraging safety and tolerability profile when added to these standard of care antihypertensives.
2023-11-11 Alnylam Pharmaceuticals Results Alnylam Presents Positive Results from the KARDIA-1 Phase 2 Dose-Ranging Study of Zilebesiran, an Investigational RNAi Therapeutic in Development for the Treatment of Hypertension in Patients at High Cardiovascular Risk alnylam.com ↗
2023-09-07 Hoffmann-La Roche Results Roche and Alnylam report positive topline results from Phase 2 study KARDIA-1 of zilebesiran, an investigational RNAi therapeutic in development to treat hypertension in patients at high risk of cardiovascular disease roche.com ↗
Zilebesiran demonstrated a clinically significant reduction in 24-hour mean systolic blood pressure (SBP) at month three, achieving a placebo-subtracted reduction greater than 15 mmHg with both 300 and 600 mg doses (p < 0.0001).
2023-09-07 Alnylam Pharmaceuticals Results Alnylam Reports Positive Topline Results from KARDIA-1 Phase 2 Dose-Ranging Study of Zilebesiran, an Investigational RNAi Therapeutic in Development to Treat Hypertension in Patients at High Cardiovascular Risk alnylam.com ↗
The study results indicate zilebesiran was associated with dose-dependent, potent and durable knockdown of serum AGT levels through Month 6.
2023-07-19 Alnylam Pharmaceuticals Results Alnylam Announces Publication of Phase 1 Study Results for Zilebesiran in the New England Journal of Medicine alnylam.com ↗
Zilebesiran also demonstrated an acceptable safety profile supporting continued clinical development; the most frequent treatment-related adverse events were mild, transient injection-site reactions.
2021-11-13 Alnylam Pharmaceuticals Results Alnylam Presents New Data for Zilebesiran, an Investigational RNAi Therapeutic for the Treatment of Hypertension, at the American Heart Association Scientific Sessions 2021 alnylam.com ↗
Alnylam Pharmaceuticals, Inc. (Nasdaq: ALNY), the leading RNAi therapeutics company, today announced positive interim results from the ongoing Phase 1 study of zilebesiran (formerly known as ALN-AGT), an investigational subcutaneous RNAi therapeutic targeting liver-expressed angiotensinogen (AGT) in development for the treatment of hypertension.

All press releases naming this drug 21 releases

DateIssuerRelease

Evidence & citations 7 cited values

Every value below carries the sentence it was read from. 9 sources stand behind the page.

FieldValueCited text
Known as Zilebesiran ClinicalTrials.gov intervention name — accepted as the source's own label NCT07553442 ↗
4

NCT05103332 ↗

NCT06272487 ↗

NCT07181109 ↗

NCT06423352 ↗

Known as AD-85481 ChEMBL registry synonym — accepted as the source's own label CHEMBL5095298 ↗
Known as ALN-85481 ChEMBL registry synonym — accepted as the source's own label CHEMBL5095298 ↗
Known as ALN-AGT01 ClinicalTrials.gov intervention name — accepted as the source's own label NCT03934307 ↗
1

NCT04936035 ↗

Action Inhibit “inhibits hepatic angiotensinogen synthesis” PMID 37467498 ↗ Jul 2023
Modality Small interfering RNA (siRNA) “Zilebesiran, an investigational RNA interference therapeutic agent with a prolonged duration of action, inhibits hepatic angiotensinogen synthesis.” PMID 37467498 ↗ Jul 2023
Route Subcutaneous “ALN-AGT01 will be administered by subcutaneous (SC) injection.” NCT03934307 ↗