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Last reviewed 2026-05-13 · How we verify

ASP5541 — Competitive Intelligence Brief

ASP5541 (ASP5541) competitive landscape: 3 comparators, recent regulatory actions, upcoming PDUFA, patent timeline. Class: Complement C5a receptor antagonist. Area: Immunology.

phase 2 Complement C5a receptor antagonist C5a receptor (C5aR) Immunology Small molecule Live · refreshed every 30 min

Target snapshot

ASP5541 (ASP5541) — Astellas Pharma Global Development, Inc.. ASP5541 is a selective antagonist of the complement C5a receptor that inhibits complement-mediated inflammation.

Comparator set (3 drugs)

Auto-detected by same drug class / molecular target / therapeutic area, ranked by phase + recency. Override with ?vs=slug1,slug2,….

Drug	Generic	Sponsor	Phase	Class	Target
ASP5541 TARGET	ASP5541	Astellas Pharma Global Development, Inc.	phase 2	Complement C5a receptor antagonist	C5a receptor (C5aR)
MP-513	MP-513	Tanabe Pharma Corporation	phase 3	Complement C5a receptor antagonist	C5a receptor (C5aR)
LJPC-501	LJPC-501	La Jolla Pharmaceutical Company	phase 3	Complement C5a receptor antagonist	C5a receptor (C5aR)
KK8398	KK8398	Kyowa Kirin Co., Ltd.	phase 3	Complement C5a receptor antagonist	C5aR1 (C5a receptor 1)

Recent regulatory actions (last 90 days)

No regulatory actions in the last 90 days for this set.

Upcoming PDUFA dates (next 180 days)

No PDUFA dates in the next 180 days for this set.

Patent timeline (forward window)

No upcoming patent expiries for this set.

Sponsor landscape (Complement C5a receptor antagonist class)

Astellas Pharma Global Development, Inc. · 1 drug in this class
Kyowa Kirin Co., Ltd. · 1 drug in this class
La Jolla Pharmaceutical Company · 1 drug in this class
Tanabe Pharma Corporation · 1 drug in this class

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Cite this brief

Drug Landscape (2026). ASP5541 — Competitive Intelligence Brief. https://druglandscape.com/ci/asp5541. Accessed 2026-05-13.

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