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About C5aR

C5aR, or complement component 5a receptor 1, is a protein crucial to the inflammatory arm of the innate immune system. As a receptor for C5a, its activation triggers chemotaxis, immune cell activation, and increased vascular permeability.

1
Approved Drugs
1
Companies
3
Indications
1
Therapeutic Areas
Broadest Approval
TAVNEOS
CHEMOCENTRYX
3
approved indications

Top C5aR Drugs

TAVNEOS
CHEMOCENTRYX
3 indications · 2021
🏢

CHEMOCENTRYX is the only company with an approved drug targeting C5aR.

C5aR Drug Modality Landscape

Modalities

Small molecule
1
100%

Routes of Administration

💊 Oral
1
100%
💡

Only one approved drug targets C5aR, using small molecule modality.

Explore alternative modalities like antibodies to differentiate from existing therapies.

Oral option available Small molecules only

C5aR Clinical Trials 14 trials

Phase 1-4 trials started in 2008 or later that test an FDA-approved drug acting on C5aR. Source: ClinicalTrials.gov. How we count

14
Total Trials
7
Active
7
Completed
100%
Completion Rate

Completion by Phase

Phase Total Completed Stopped Active Completion
Phase 1 5 4 0 1 100%
Phase 2 4 2 0 2 100%
Phase 3 3 1 0 2 100%
Phase 4 2 0 0 2 -

Top Sponsors

Amgen 9 100%
Mayo Clinic 2
University Hospital, Toulouse 1
Robert Spiera, MD 1
Chiba University 1

By Modality

Small molecule
14 100%
Source: ClinicalTrials.gov · Completion rate = completed ÷ (completed + terminated + withdrawn)

Phase 3 Readout Calendar Pro

1 Phase 3 trial testing approved C5aR drugs across all sponsors.

Full calendar →
Q3 2028
Avacopan
Amgen · Vasculitis
Estimated · aging NCT06321601

Coverage: trials whose intervention is an approved drug targeting C5aR. Pre-approval candidates with development codes (e.g. AZD0901, MK-7240) are not yet linked. Anchored on CT.gov primary completion date.

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Deep insights for drug target analysis

Competitive Landscape

  • • 1 companies competing
  • • Market share by company

Full Drug Portfolio

  • • All 1 approved drugs
  • • Approval dates & indications

Genetic Validation

  • • Full genetic evidence table
  • • Effect sizes & directions

Approval Timeline

  • • Full 1-drug timeline
  • • First-of-modality markers

Clinical Trials Analysis

  • • Sponsors: 5 (1 company)
  • • Completion rates by condition
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Full summary • All drugs • Genetic evidence • Trials • Timeline

How We Count Trials

  • Trials: phase 1-4 interventional trials on ClinicalTrials.gov that started in 2008 or later and test an FDA-approved drug acting on C5aR. A trial counts if an approved drug acting on C5aR is in any arm, including as a comparator, and a trial that tests two such drugs counts once. Trials that test only unapproved drugs are not counted. A trial listed as phase 1/2 counts as phase 1, and phase 2/3 as phase 2.
  • Active: recruiting, not yet recruiting, enrolling by invitation, or active and no longer recruiting.
  • Completion rate: of the trials that have ended, the share marked Completed rather than Terminated or Withdrawn. Completed means the trial ended as planned; it does not mean the drug worked. Suspended trials are not counted as ended.
  • Stopped: terminated or withdrawn. Trials stop for many reasons, including slow enrolment and business decisions, not only safety or efficacy.
  • Sponsors: the lead sponsor of each trial. Companies are the sponsors ClinicalTrials.gov classes as industry; the rest are universities, hospitals, cooperative groups, government bodies and individuals.