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Data updated: May 26, 2026

SOLIRIS (eculizumab)

Complement Inhibitors Trial Activity: Declining 7 active trials
Immunology Approved 2007-03-16

SOLIRIS is indicated for the treatment of Paroxysmal nocturnal hemoglobinuria (PNH); Atypical hemolytic uremic syndrome (aHUS); Generalized myasthenia gravis (gMG); Neuromyelitis optica spectrum disorder (NMOSD).

Source: FDA Label • ALEXION PHARM • Complement Inhibitor

How SOLIRIS Works

Eculizumab is a monoclonal antibody that binds to the complement protein C5, preventing its cleavage into C5a and C5b. This action inhibits the formation of the terminal complement complex C5b-9, which otherwise mediates cell destruction. In PNH and aHUS, this process prevents intravascular hemolysis and thrombotic microangiopathy. In patients with gMG and NMOSD, the therapeutic effect is presumed to involve the inhibition of C5b-9 deposition at the neuromuscular junction or other targeted tissues.

Development Insights

Alexion Pharmaceuticals, Inc. conducting 28 trials (39%)
74 indications explored (Broad Platform)
paroxysmal nocturnal hemoglobinuria (13 trials)
paroxysmal nocturnal hemoglobinuria (pnh) (6 trials)
atypical hemolytic uremic syndrome (6 trials)
6
Indications
--
Phase 3 Trials
4
Priority Reviews
19
Years on Market

Details

Status
Prescription
First Approved
2007-03-16
Patent Cliff
2027

Pro Metrics

Patent cliff and revenue data

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Routes
IV (INFUSION)
Dosage Forms
INJECTABLE

Companies

Active Ingredient: ECULIZUMAB

SOLIRIS Approval History

2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
Original
New Indication
New Form
Label Update
25 FDA actions from 2007 to 2025 · 5 indication expansions
Jun 2025 SUPPL
Update · REMS
Feb 2025 SUPPL Priority
Efficacy
Sep 2024 SUPPL
Label · Labeling

What SOLIRIS Treats

4 indications

SOLIRIS is approved for 4 conditions since its original approval in 2007. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Paroxysmal nocturnal hemoglobinuria (PNH)
  • Atypical hemolytic uremic syndrome (aHUS)
  • Generalized myasthenia gravis (gMG)
  • Neuromyelitis optica spectrum disorder (NMOSD)
Source: FDA Label

SOLIRIS Boxed Warning

SERIOUS MENINGOCOCCAL INFECTIONS SOLIRIS, a complement inhibitor, increases the risk of serious infections caused by Neisseria meningitidis [see Warnings and Precautions (5.1) ] . Life-threatening and fatal meningococcal infections have occurred in patients treated with complement inhibitors. These infections may become rapidly life-threatening or fatal if not recognized and treated early. Complete or update vaccination for meningococcal bacteria (for serogroups A, C, W, Y, and B) at least 2 wee...

SOLIRIS Biosimilars

2 FDA-approved

1 can be substituted at the pharmacy without calling the prescriber. The other 1 require prescriber approval to switch.

What are biosimilars? Lower-cost alternatives to SOLIRIS with no clinically meaningful differences.

Auto-substitute OK = FDA "interchangeable" designation — pharmacist can switch without calling the doctor.

SOLIRIS Competitive Set

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Three rings of competition based on shared molecular targets and treated indications.

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Filters applied: drops same-active-ingredient (505(b)(2) reformulations), route-mismatch (topical vs systemic), and cross-therapeutic-area matches in same-indication rings.

Drugs Similar to SOLIRIS

FDA-approved drugs for similar conditions. Compare mechanisms and indications to understand treatment alternatives.

ULTOMIRIS
RAVULIZUMAB-CWVZ
2 shared
ALEXION PHARM
Shared indications:
Paroxysmal nocturnal hemoglobinuria (PNH)Atypical hemolytic uremic syndrome (aHUS)
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Clinical Trial Registry

70 trials
Trial Sponsor ID Phase Status Title
NCT02205541 ECULISHU RC31/13/7052 PHRC 13-0060, 2014-001169-28 Ph 3 completed Eculizumab in Shiga-toxin Related Hemolytic and Uremic Syndrome Pediatric Patients - ECULISHU
NCT05133531 ACCESS-1 R3918-PNH-2021 2020-004486-40, 2023-509657-31-00 Ph 3 active not recruiting A Study to Evaluate How Safe Pozelimab + Cemdisiran Combination Therapy is and How Well it Works in Adult Patients With Paroxysmal Nocturnal Hemoglobinuria (PNH) Who Have Not Recently Received or Have Not Received Complement Inhibitor Treatment
NCT04935177 ConfIdeS 20-HMedIdeS-17 Ph 3 completed Renal Function in Highly Sensitized Patients 1 Year After Desensitization With Imlifidase Prior to DD Kidney Tx
NCT04432584 COMMODORE 1 BO42161 2020-000597-26, 2023-506526-37-00 Ph 3 active not recruiting A Study Evaluating the Safety, Pharmacokinetics, and Efficacy of Crovalimab Versus Eculizumab in Participants With Paroxysmal Nocturnal Hemoglobinuria (PNH) Currently Treated With Complement Inhibitors
NCT04434092 COMMODORE 2 results posted BO42162 2019-004931-21, 2023-506498-36-00 Ph 3 active not recruiting A Study Evaluating the Efficacy and Safety of Crovalimab Versus Eculizumab in Participants With Paroxysmal Nocturnal Hemoglobinuria (PNH) Not Previously Treated With Complement Inhibitors
NCT05646563 NM8074-PNH-106 Ph 2 not yet recruiting Study of NM8074 in Adult PNH Patients With Inadequate Response to Soliris
NCT06764160 ECU-MG-304 D7411C00003 ECU-MG-304 Ph 3 completed Efficacy, Safety, Pharmacokinetics, Pharmacodynamics, and Immunogenicity of Eculizumab in Chinese Adults With gMG
NCT06724809 ECU-NMO-304 D7412C00002 Ph 3 active not recruiting Efficacy, Safety, PK, PD, and ADA of Eculizumab in Chinese Adults With NMOSD
NCT05876351 Soliris results posted D7413C00001 ECU-aHUS-302, 2025-000162-29 Ph 3 completed Eculizumab in Pediatric and Adult Participants With Atypical Hemolytic Uremic Syndrome (aHUS) in China
NCT06513338 C5mAb in anti-GBM disease Ph 2 completed Complement C5 mAb in the Treatment of Anti-GBM Disease
NCT02113891 TAMARCIN P101004 Ph 1, Ph 2 withdrawn Eculizumab Therapy for Subclinical Antibody-mediated Rejection in Kidney Transplantation
NCT04752566 results posted ECU-GBS-301 Ph 3 completed A Study to Evaluate the Efficacy and Safety of Eculizumab in Guillain-Barré Syndrome
NCT06987864 BCD-148-EXT Ph 3 completed An Extension Clinical Study of BCD-148 for the Treatment of Patients With PNH Previously Treated in Clinical Study No. BCD-148-2/NOCTURN
NCT05886244 Soliris D7414C00001 Ph 3 completed Eculizumab in Adult Participants With Paroxysmal Nocturnal Hemoglobinuria (PNH) in China
NCT04702568 results posted BCX9930-201 2020-000501-93 Ph 2 terminated A Long-Term Safety Study of BCX9930 in Participants With Paroxysmal Nocturnal Hemoglobinuria (PNH)
NCT05131204 ACCESS 2 results posted R3918-PNH-2022 2020-002761-33 Ph 3 terminated Efficacy and Safety of the Combination of Pozelimab and Cemdisiran Versus Continued Eculizumab or Ravulizumab Treatment in Adult Patients With Paroxysmal Nocturnal Hemoglobinuria
NCT03056040 results posted ALXN1210-PNH-302 2016-002026-36 Ph 3 completed ALXN1210 Versus Eculizumab in Adult Participants With Paroxysmal Nocturnal Hemoglobinuria (PNH) Currently Treated With Eculizumab
NCT05116774 REDEEM-1 results posted BCX9930-202 2020-004438-39 Ph 2 terminated BCX9930 for the Treatment of Paroxysmal Nocturnal Hemoglobinuria (PNH) in Participants With Inadequate Response to C5 Inhibitor Therapy
NCT03759366 results posted ECU-MG-303 2016-001384-37 Ph 3 completed A Phase 3 Open-Label Study of Eculizumab in Pediatric Participants With Refractory Generalized Myasthenia Gravis (gMG)
NCT04558918 APPLY-PNH results posted CLNP023C12302 2019-004665-40 Ph 3 completed Study of Efficacy and Safety of Twice Daily Oral LNP023 in Adult PNH Patients With Residual Anemia Despite Anti-C5 Antibody Treatment
NCT04155424 results posted ECU-NMO-303 2019-001829-26 Ph 2, Ph 3 terminated A Study of the Safety and Activity of Eculizumab in Pediatric Participants With Relapsing Neuromyelitis Optica Spectrum Disorder
NCT04320602 results posted ALXN1210-PNH-401 2019-003440-74 Ph 4 completed Ravulizumab in Adult Participants With Paroxysmal Nocturnal Hemoglobinuria Currently Treated With High-Dose Eculizumab
NCT06453135 WestChina-ECU-KT Ph 1, Ph 2 not yet recruiting Eculizumab for Prevention of Antibody-Mediated Rejection in ABO-Incompatible Living Donor Kidney Transplantation
NCT02946463 results posted ALXN1210-PNH-301 2016-002025-11 Ph 3 completed ALXN1210 (Ravulizumab) Versus Eculizumab in Complement Inhibitor Treatment-Naïve Adult Participants With Paroxysmal Nocturnal Hemoglobinuria (PNH)
NCT03472885 PNH results posted ACH471-101 2016-003526-16, U1111-1209-4655 Ph 2 completed Study of Danicopan in Participants With Paroxysmal Nocturnal Hemoglobinuria With Inadequate Response to Eculizumab
NCT04725812 CRUSH results posted STUDY00000039 Ph 2 terminated Complement Regulation to Undo Systemic Harm in Preeclampsia
NCT04103489 IRB00193549 1K12HD085845-01 Ph 1 completed The Use of Eculizumab in HELLP Syndrome
NCT03518203 results posted 2018-7119C Ph 2 completed Eculizumab to Treat Thrombotic Microangiopathy/Atypical Hemolytic Uremic Syndrome -Associated Multiple Organ Dysfunction Syndrome in Hematopoietic Stem Cell Transplant Recipients
NCT03818607 DAHLIA results posted 20150168 Ph 3 completed A Study Evaluating the Efficacy and Safety of ABP 959 Compared With Eculizumab in Adult Participants With PNH
NCT02003144 results posted ECU-NMO-302 2013-001151-12 Ph 3 completed An Open Label Extension Trial of Eculizumab in Relapsing NMO Patients
NCT03500549 results posted APL2-302 Ph 3 completed Study to Evaluate the Efficacy and Safety of APL-2 in Patients With Paroxysmal Nocturnal Hemoglobinuria (PNH)
NCT02013037 DUET results posted CSR 205237 Pro00028970 Ph 3 completed The De-novo Use of Eculizumab in Presensitized Patients Receiving Cardiac Transplantation
NCT04060264 BCD-148-2 Ph 3 completed Clinical Trial of BCD-148 and Soliris® for the Treatment of Patients With Paroxysmal Nocturnal Hemoglobinuria
NCT01029587 results posted NA_00029904 Ph 2 completed Eculizumab to Enable Renal Transplantation in Patients With History of Catastrophic Antiphospholipid Antibody Syndrome
NCT04027803 results posted BCD-148-3 Ph 1 completed Comparative Study of Pharmacokinetics, Pharmacodynamics, Safety, and Immunogenicity of Single Intravenous Doses of BCD-148 and Soliris®
NCT02301624 results posted ECU-MG-302 2013-002191-41 Ph 3 completed Extension Study of ECU-MG-301 to Evaluate Safety and Efficacy of Eculizumab in Refractory Generalized Myasthenia Gravis
NCT03722329 SB12-1001 Ph 1 completed Pharmacokinetic, Safety, Tolerability, Immunogenicity, and Pharmacodynamic Study of SB12 in Healthy Subjects
NCT02574403 STOPECU RC15_0061 Ph 4 completed Study Assessing an Algorithm-based Strategy of Eculizumab Discontinuation in Children and Adults With aHUS
NCT00727194 results posted C08-001 Ph 2 terminated Safety and Efficacy Study of Eculizumab in Patients With Refractory Generalized Myasthenia Gravis
NCT01194804 results posted E07-001 Ph 2 completed E07-001: Safety and Efficacy Extension Study of Eculizumab in Paroxysmal Nocturnal Hemoglobinuria Patients
NCT01327573 results posted 100700716 Ph 1 completed Eculizumab Therapy for Chronic Complement-Mediated Injury in Kidney Transplantation
NCT01997229 results posted ECU-MG-301 2013-003589-15 Ph 3 completed Safety and Efficacy of Eculizumab in Refractory Generalized Myasthenia Gravis (REGAIN Study)
NCT01892345 results posted ECU-NMO-301 Ph 3 terminated A Randomized Controlled Trial of Eculizumab in AQP4 Antibody-positive Participants With NMO (PREVENT Study)
NCT01403389 HSM 10-1600 Ph 2 terminated A Study of the Activity of Eculizumab for Prevention of Delayed Graft Function In Deceased Donor Kidney Transplant
NCT01567085 results posted C10-002 2010-019631-35 Ph 2 completed Safety & Efficacy Of Eculizumab In The Prevention Of AMR In Sensitized Recipients Of A Kidney Transplant From A Deceased Donor
NCT01221181 results posted AAAF2403 Ph 1 completed Eculizumab Therapy for Dense Deposit Disease and C3 Nephropathy
NCT02298933 results posted 150015 15-H-0015 Ph 2 completed Complement Inhibition Using Eculizumab to Overcome Platelet Transfusion Refractoriness in Patients With Severe Thrombocytopenia
NCT02145182 results posted ECU-DGF-201 2013-004650-25 Ph 2, Ph 3 completed Prevention of Delayed Graft Function Using Eculizumab Therapy (PROTECT Study)
NCT00867932 results posted M07-005 2009-010402-11 Ph 4 completed Eculizumab Pharmacokinetics/Pharmacodynamics Study in Pediatric/Adolescent Paroxysmal Nocturnal Hemoglobinuria (PNH)
NCT02727608 ICC ICC version 2 2014-005421-12 Ph 2 completed Complement Inhibitor Eculizumab in Clinical Islet Transplantation

Showing 50 of 70 trials

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Key Completed Trials

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Completed studies with published results, ranked by significance

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

SOLIRIS FDA Label Details

Indications & Usage

FDA Label (PDF)

SOLIRIS is indicated for the treatment of Paroxysmal nocturnal hemoglobinuria (PNH); Atypical hemolytic uremic syndrome (aHUS); Generalized myasthenia gravis (gMG); Neuromyelitis optica spectrum disorder (NMOSD).

⚠️ BOXED WARNING

WARNING: SERIOUS MENINGOCOCCAL INFECTIONS SOLIRIS, a complement inhibitor, increases the risk of serious infections caused by Neisseria meningitidis [see Warnings and Precautions (5.1) ] . Life-threatening and fatal meningococcal infections have occurred in patients treated with complement inhibitor...

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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.

How We Calculate These Metrics

Trial Activity Stage

Measures the current development activity pattern based on trial phases, status, and trends. Important: This measures R&D activity, not commercial lifecycle.

Trial statuses: "Active" means recruiting or ongoing. "Completed" means reached planned endpoint. "Terminated" means stopped early—often due to safety, efficacy, or business reasons.

  • Growth: High proportion of early-phase trials (Phase 1/2), active development
  • Expansion: Significant Phase 3 activity, approaching or pursuing approvals
  • Mature: Substantial Phase 4 post-marketing studies
  • Stable: Mixed phase distribution, steady development
  • Declining: Low active trial ratio, reduced R&D investment