Drugs / Fazirsiran
last change Sep 2025 re-read 3 minutes ago

Fazirsiran

also known as ADS-001 · ADS-001 FREE ACID · ARO-AAT
Developed for
alpha 1-antitrypsin deficiency
Investigated by
Takeda · Arrowhead Pharmaceuticals · Takeda Development Center Americas, Inc.

Trials 6

PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 11 trial
Phase 1 NCT05891158 Oct 2023 → Sep 2025 — Takeda Completed No outcome recorded
Phase 22 trials · 1 met primary
Phase 2 NCT03946449 Oct 2019 → Apr 2022 alpha 1-antitrypsin deficiency Arrowhead Pharmaceuticals Completed No outcome recorded
Phase 2 NCT03945292 Aug 2019 → Nov 2021 alpha 1-antitrypsin deficiency Arrowhead Pharmaceuticals Completed Met primary
Phase 33 trials
Phase 3 NCT06165341 Mar 2024 → Aug 2028 expected alpha 1-antitrypsin deficiency Takeda Recruiting No outcome recorded
Phase 3 NCT05899673 Aug 2023 → May 2033 expected alpha 1-antitrypsin deficiency Takeda Active not recruiting No outcome recorded
Phase 3 NCT05677971 Mar 2023 → Jan 2029 expected alpha 1-antitrypsin deficiency Takeda Recruiting No outcome recorded

News releases announcing trial results or a regulatory action · 21

DateIssuerRelease
2023-06-24 Arrowhead Pharmaceuticals Results Arrowhead Presents Updated Data from Phase 2 SEQUOIA Study of Investigational RNAi Therapy Fazirsiran in Patients with Alpha-1 Antitrypsin Deficiency Liver Disease arrowheadpharma.com ↗
Arrowhead Pharmaceuticals Inc. (NASDAQ: ARWR) today presented updated results from the Phase 2 SEQUOIA clinical study of investigational fazirsiran (TAK-999/ARO-AAT) for the treatment of liver disease associated with alpha-1 antitrypsin deficiency (AATD-LD).
2023-01-09 Takeda Results Arrowhead and Takeda Announce Topline Results from SEQUOIA Phase 2 Study of Fazirsiran in Patients with Alpha-1 Antitrypsin Deficiency-Associated Liver Disease takeda.com ↗
Takeda ( TSE:4502/NYSE:TAK ) and Arrowhead Pharmaceuticals Inc. (NASDAQ: ARWR) today announced topline results from the Phase 2 SEQUOIA clinical study of investigational fazirsiran (TAK-999/ARO-AAT) for the treatment of liver disease associated with alpha-1 antitrypsin deficiency (AATD-LD).
2023-01-09 Arrowhead Pharmaceuticals Results Arrowhead and Takeda Announce Topline Results from SEQUOIA Phase 2 Study of Fazirsiran in Patients with Alpha-1 Antitrypsin Deficiency-Associated Liver Disease arrowheadpharma.com ↗
today announced topline results from the Phase 2 SEQUOIA clinical study of investigational fazirsiran (TAK-999/ARO-AAT) for the treatment of liver disease associated with alpha-1 antitrypsin deficiency (AATD-LD).
2022-06-27 Takeda Results Results from Phase 2 Study of Fazirsiran in Patients with Alpha-1 Antitrypsin Deficiency Published in New England Journal of Medicine takeda.com ↗
The NEJM article was published online ahead of print and is titled, “Fazirsiran for Liver Disease Associated with Alpha-1 Antitrypsin Deficiency.”
2022-06-27 Arrowhead Pharmaceuticals Results Results from Phase 2 Study of Fazirsiran in Patients with Alpha-1 Antitrypsin Deficiency Published in New England Journal of Medicine arrowheadpharma.com ↗
2021-11-12 Arrowhead Pharmaceuticals Results Arrowhead Presents Additional Clinical Data on Investigational ARO-AAT Treatment at AASLD Liver Meeting arrowheadpharma.com ↗
2021-11-01 Arrowhead Pharmaceuticals Results Arrowhead Pharmaceuticals to Participate in Upcoming November 2021 Conferences arrowheadpharma.com ↗
Title: ARO-AAT Treatment Reduces Intra-hepatic Z-AAT Leading to Improved Parameters of Liver Health and Fibrosis Regression
2021-06-26 Arrowhead Pharmaceuticals Results Arrowhead Presents Additional Clinical Data on Investigational ARO-AAT Treatment in Patients with Alpha-1 Liver Disease at EASL International Liver Congress arrowheadpharma.com ↗
The results demonstrate that, in the AROAAT2002 study, investigational ARO-AAT treatment led to improvements in multiple measures of liver health, including fibrosis, with substantial and sustained reductions in the level of mutant AAT protein (Z-AAT).
2021-04-28 Arrowhead Pharmaceuticals Results Arrowhead Announces Improvement in Fibrosis after ARO-AAT Treatment in Patients with Alpha-1 Liver Disease arrowheadpharma.com ↗
Four of the five patients achieved a 1 or greater stage improvement in Metavir fibrosis stage, with no worsening of fibrosis in the fifth patient
2020-11-13 Arrowhead Pharmaceuticals Results Arrowhead Interim Clinical Data Demonstrate ARO-AAT Treatment Improved Multiple Biomarkers of Alpha-1 Liver Disease arrowheadpharma.com ↗
Arrowhead Pharmaceuticals, Inc. (NASDAQ: ARWR) today announced positive interim clinical data from AROAAT2002, an open-label Phase 2 clinical study of ARO-AAT, the company’s second-generation investigational RNA interference (RNAi) therapeutic being developed as a treatment for the rare genetic liver disease associated with alpha-1 antitrypsin deficiency (AATD).
2020-09-16 Arrowhead Pharmaceuticals Results Arrowhead ARO-AAT Phase 2 Interim Results in Patients with Alpha-1 Liver Disease Demonstrate Improvements in Key Parameters after Six Months of Treatment arrowheadpharma.com ↗
After 24 weeks of treatment with investigational ARO-AAT in the AROAAT2002 study, serum and total intra-hepatic Z-AAT decreased in all four patients by up to 93% and 95%, respectively.
2019-06-27 Arrowhead Pharmaceuticals Regulatory Arrowhead Pharmaceuticals Receives Fast Track Designation for ARO-AAT for Treatment of Alpha-1 Liver Disease arrowheadpharma.com ↗

All press releases naming this drug 32 releases

DateIssuerRelease

Evidence & citations 6 cited values

Every value below carries the sentence it was read from. 8 sources stand behind the page.

FieldValueCited text
Known as Fazirsiran “Safety, Tolerability and Pharmacodynamic Effect of Fazirsiran (TAK-999, ARO-AAT)” NCT03945292 ↗
5

“Fazirsiran for Liver Disease Associated with Alpha(1)-Antitrypsin Deficiency.” PMID 35748699 ↗ Jun 2022

NCT05899673 ↗

NCT05891158 ↗

NCT06165341 ↗

NCT05677971 ↗

Known as ADS-001 ChEMBL registry synonym — accepted as the source's own label CHEMBL5095435 ↗
Known as ADS-001 FREE ACID ChEMBL registry synonym — accepted as the source's own label CHEMBL5095435 ↗
Known as ARO-AAT “Study of Fazirsiran (TAK-999, ARO-AAT) in Patients With Alpha-1 Antitrypsin Deficiency Associated Liver Disease (AATD)” NCT03946449 ↗
Action Inhibit “All the patients had reduced accumulation of Z-AAT in the liver” PMID 35748699 ↗ Jun 2022
Route Subcutaneous “administered subcutaneously” NCT03945292 ↗