TheraRadar
Data updated: May 26, 2026

EPYSQLI (eculizumab-aagh)

Complement Inhibitors
Immunology Approved 2024-07-19

EPYSQLI is indicated for the treatment of Paroxysmal Nocturnal Hemoglobinuria; Atypical Hemolytic Uremic Syndrome; Generalized Myasthenia Gravis.

Source: FDA Label • SAMSUNG BIOEPIS CO LTD • Complement Inhibitor

How EPYSQLI Works

EPYSQLI is a monoclonal antibody that binds with high affinity to the complement protein C5, inhibiting its cleavage into C5a and C5b. This action prevents the generation of the terminal complement complex C5b-9, which otherwise mediates intravascular hemolysis in PNH and thrombotic microangiopathy in aHUS. In patients with gMG, the drug is presumed to work by reducing the deposition of this terminal complement complex at the neuromuscular junction.

2
Indications
--
Phase 3 Trials
1
Years on Market

Details

Status
Prescription
First Approved
2024-07-19
Routes
SOLUTION
Dosage Forms
INJECTION

Companies

Active Ingredient: ECULIZUMAB-AAGH

EPYSQLI Approval History

2025
2026
Original
New Indication
New Form
Label Update
11 FDA actions from 2024 to 2026 · 1 indication expansions
Apr 2026 SUPPL
Update · REMS
Jan 2026 SUPPL
Update · REMS
Nov 2025 ORIGINAL
Efficacy

What EPYSQLI Treats

3 indications

EPYSQLI is approved for 3 conditions since its original approval in 2024. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Paroxysmal Nocturnal Hemoglobinuria
  • Atypical Hemolytic Uremic Syndrome
  • Generalized Myasthenia Gravis
Source: FDA Label

EPYSQLI Boxed Warning

SERIOUS MENINGOCOCCAL INFECTIONS Eculizumab products, complement inhibitors, increase 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...

Biosimilar for Soliris

EPYSQLI is a lower-cost alternative to Soliris with no clinically meaningful differences. Requires prescriber approval to substitute.

EPYSQLI Competitive Set

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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 EPYSQLI

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Shared indications:
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Shared indications:
Paroxysmal Nocturnal Hemoglobinuria
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Clinical Trial Registry

66 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
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
NCT02013037 DUET results posted CSR 205237 Pro00028970 Ph 3 completed The De-novo Use of Eculizumab in Presensitized Patients Receiving Cardiac Transplantation
NCT01029587 results posted NA_00029904 Ph 2 completed Eculizumab to Enable Renal Transplantation in Patients With History of Catastrophic Antiphospholipid Antibody Syndrome
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
NCT01756508 Eculizumab for reperfusion Ph 2 completed Eculizumab for Prevention and Treatment of Kidney Graft Reperfusion Injury
NCT00670774 results posted 07-007208 Ph 1, Ph 2 completed Dosing Regimen of Eculizumab Added to Conventional Treatment in Positive Cross Match Living Donor Kidney Transplant
NCT01919346 13-0920 Ph 2 terminated Eculizumab for Prevention of Delayed Graft Function (DGF) in Kidney Transplantation
NCT01106027 results posted 09-005627DD Ph 1, Ph 2 terminated Dosing Regimen of Eculizumab Added to Conventional Treatment in Positive Crossmatch Deceased Donor Kidney Transplant

Showing 50 of 66 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.

EPYSQLI FDA Label Details

Indications & Usage

FDA Label (PDF)

EPYSQLI is indicated for the treatment of Paroxysmal Nocturnal Hemoglobinuria; Atypical Hemolytic Uremic Syndrome; Generalized Myasthenia Gravis.

⚠️ BOXED WARNING

WARNING: SERIOUS MENINGOCOCCAL INFECTIONS Eculizumab products, complement inhibitors, increase 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 compleme...

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Data Sources

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