Drugs / BW-20805
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BW-20805

Developed for
hereditary angioedema
Investigated by
Shanghai Argo Biopharmaceutical Co., Ltd.

Trials 2

PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 11 trial
Phase 1 NCT07528053 Apr → Jun 2026 overdue — Shanghai Argo Biopharmaceutical Co., Ltd. Not yet recruiting No outcome recorded
Phase 21 trial · 1 met primary
Phase 2 NCT06846398 Feb 2025 → Jun 2026 overdue hereditary angioedema Shanghai Argo Biopharmaceutical Co., Ltd. Active not recruiting Met primary

News releases announcing trial results or a regulatory action · 5

DateIssuerRelease
2026-09-04 Shanghai Argo Biopharmaceutical Co., Ltd. Results Argo Biopharma to Present Positive Phase II Updated Results of siRNA Therapeutic BW-20805 for HAE at Bradykinin Symposium 2026 argobiopharma.com ↗
The magnitude and durability of attack-rate reduction observed through Day 169, together with sustained PKK suppression and a well-tolerated safety profile, support continued advancement of this program as we work to address the need for effective therapies with less frequent dosing.
2026-06-08 Shanghai Argo Biopharmaceutical Co., Ltd. Results Argo Biopharma to Present Positive Phase II Updated Results of siRNA Therapeutic BW-20805 for HAE at the EAACI 2026 Congress argobiopharma.com ↗
The sustained and robust PKK suppression supports further evaluation of a Q6M dosing regimen.
2026-03-16 Shanghai Argo Biopharmaceutical Co., Ltd. Regulatory Argo Biopharma Receives FDA Fast Track Designation for BW-20805, an Investigational siRNA Therapy for the Treatment of HAE argobiopharma.com ↗
Argo Biopharmaceutical Co., Ltd. (Argo Biopharma), a clinical-stage small interfering RNA (siRNA) therapeutics company, today announced that the U.S. Food and Drug Administration (FDA) has granted Fast Track Designation (FTD) to its novel siRNA therapy BW-20805, for the treatment of hereditary angioedema (HAE) .
2026-02-26 Shanghai Argo Biopharmaceutical Co., Ltd. Results Argo Biopharma to Present Positive Phase II Interim Results of siRNA Therapeutic BW-20805 for HAE at the 2026 AAAAI Annual Meeting argobiopharma.com ↗
The open-label study results, selected as a late breaking abstract presentation, titled "Significant HAE Attack Reduction with BW-20805, a Long-Acting Prophylactic Injection-An Ongoing Phase 2 Study in Adults with Hereditary Angioedema" (POSTER ID: L42), show that BW-20805 provides remarkable plasma PKK reduction, along with meaningful time-normalized HAE attack rate reduction.
2025-11-07 Shanghai Argo Biopharmaceutical Co., Ltd. Results Argo Biopharma to Present Positive Phase I Results of siRNA Therapeutic BW-20805 for HAE at ACAAI 2025 argobiopharma.com ↗
These data highlight that BW-20805 was well tolerated and demonstrated a favorable safety profile and achieved rapid, profound, and sustained reductions in plasma PKK levels.

Evidence & citations 2 cited values

Every value below carries the sentence it was read from. 2 sources stand behind the page.

FieldValueCited text
Known as BW-20805 ClinicalTrials.gov intervention name — accepted as the source's own label NCT07528053 ↗
1

NCT06846398 ↗

Route Subcutaneous “SC administrations of BW-20805” NCT06846398 ↗