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Inebilizumab

Phase 3

Autoimmune Hepatitis | Small molecule | Immunology |Amgen Inc.|Last Updated: Jul 9, 2026

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Trial Design
RandomizedDouble-BlindCONTROLLEDDMC
Total Trials1
Total Enrollment180
FDA Designations
No designations recorded
Clinical trial landscape

Inebilizumab · 7 trials · 9 indications

Phase 3 3Phase 2 4
NCT07598825A Trial of Inebilizumab in Participants With Autoimmune HepatitisAutoimmune Hepatitis
NOT YET_RECRUITING180 Analytics
NCT04540497A Study of Inebilizumab Efficacy and Safety in IgG4- Related DiseaseIgG4 Related Disease
ACTIVE NOT_RECRUITING135 Analytics
NCT04524273Myasthenia Gravis Inebilizumab TrialMyasthenia Gravis
ACTIVE NOT_RECRUITING238 Analytics
PHASE3NOT YET_RECRUITING
A Trial of Inebilizumab in Participants With Autoimmune Hepatitis
Autoimmune HepatitisUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
A Study of Inebilizumab Efficacy and Safety in IgG4- Related Disease
IgG4 Related DiseaseUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
Myasthenia Gravis Inebilizumab Trial
Myasthenia GravisUnlock trial analytics
Study Endpoints
Primary Endpoints
Part 1: Number of Participants who Experienced Treatment-emergent Adverse Events (TEAEs), Serious TEAEs, and TEAEs of Interest at Week 26
Up to Week 26
Part 2: Number of Participants who Achieved Modified Histologic Activity Index (mHAI) ≤ 3 and Stable Prednisone Dose (or equivalent) ≤ 5 mg/day at Week 78
Week 78

Participants who met the two outcomes combined will be reported for this endpoint.

RCP: Time to Disease Flare
Up to Week 52

Time to disease flare was defined as the number of days from Day 1 (dosing) to the date of the first treated and Adjudication Committee (AC)-determined IgG4-RD flare within the 52-week RCP. The date of disease flare was determined by the initiation of any flare treatment, including new or increased glucocorticoid (GC) treatment, other immunotherapy, or an interventional procedure, as deemed necessary by the Investigator to address the flare. Kaplan-Meier (KM) method was used to estimate the median time to flare, and 95% confidence interval (CI).

Change From Baseline at Week 26 in Myasthenia Gravis Activities of Daily Living (MG-ADL) Score in the Overall Study Population
Baseline and Week 26

MG-ADL score is an 8-item questionnaire that focuses on relevant symptoms and functional performance of activities of daily living over the previous 7 days. The MG-ADL score assesses disability secondary to ocular (2 items), bulbar (3 items), respiratory (1 item) and gross motor or limb (2 items) impairment related to effects from MG. Each response is graded 0 (normal) to 3 (most severe). The range of total MG-ADL scores is 0-24. A higher score represents more severe disease Outcome measure is reported for the overall population.

Maximum Observed Concentration (Cmax) of Inebilizumab
Up to Week 52
Area Under the Concentration-time Curve (AUC) of Inebilizumab
Up to Week 52
Half-life (t1/2) of Inebilizumab
Up to Week 52
Clearance (CL) of Inebilizumab
Up to Week 52
Volume of Distribution at Steady State (Vss) of Inebilizumab
Up to Week 52
Change from Baseline in Cluster of Differentiation 20 (CD20)+ B-cell Counts
Baseline and Week 78
Number of Participants Experiencing Treatment-emergent Adverse Events
Up to Week 78
Number of Participants Experiencing Clinically Significant Changes in Laboratory Parameters
Up to Week 78
Number of Participants Experiencing Clinically Significant Changes in Vital Signs
Up to Week 78
Maximum Plasma Concentration (Cmax) of Inebilizumab
Up to Day 561
Area Under the Plasma Concentration-time Curve (AUC) of Inebilizumab
Up to Day 561
Terminal Half-life (t½) of Inebilizumab
Up to Day 561
Volume of Distribution at Steady-state (Vss) of Inebilizumab
Up to Day 561
Change from Baseline in CD20+ B-cell Counts
Baseline and Day 561
Number of Participants Experiencing Adverse Events (AEs)
Up to Day 561
Number of Participants Experiencing Serious Adverse Events (SAEs)
Baseline up to Day 561
Number of Participants Experiencing Events of Interest (EOIs)
Baseline up to Day 561
Number of Participants Experiencing Clinically Significant Changes from Baseline in Laboratory Parameters
Baseline up to Day 561
Number of Participants Experiencing Clinically Significant Changes from Baseline in Vital Signs
Baseline up to Day 561
Subprotocol A, B Part A, and C Part A: Number of Participants Who Experience a Treatment-emergent Adverse Event (TEAE)
Day 1 to Week 52
Subprotocol A, B Part A, and C Part A: Number of Participants Who Experience a Serious TEAE
Day 1 to Week 52
Subprotocol B Part B Subgroup 1: Number of Participants With Complete Renal Response (CRR)
Week 52
Subprotocol B Part B Subgroup 2: Number of Participants With Remission in SLE as Defined by Definition of Remission in SLE (DORIS)
Week 26
Subprotocol C Part B: Percentage of Participants Achieving Disease Activity Score-28 Joint C-Reactive Protein (DAS28-CRP) Remission
Week 12
Area Under the Concentration Versus Time Curve of Inebilizumab from Time 0 to 14 Days Post-dose (AUC0-14d)
Day 1 to pre-dose on Day 15
Area Under the Concentration Versus Time Curve of Inebilizumab from Time 0 Extrapolated to Infinity (AUC0-Inf)
Day 1 to Week 80
Systemic Clearance (CL) of Inebilizumab
Day 1 to Week 80
Terminal Elimination Half-life (t½) of Inebilizumab
Day 1 to Week 80
Change from Baseline in Peripheral Cluster of Differentiation (CD)20-positive B-cell Counts
Week 1, Week 2, Week 28, Week 80
Number of Participants Experiencing Treatment-emergent Adverse Events (TEAEs), Serious Adverse Events (SAEs), and Adverse Events of Special Interest (AESIs)
Day 1 to Week 80
Change from Baseline in Serum Chemistry
Week 1, Week 2, Week 28, Week 80
Change from Baseline in Hematology
Week 1, Week 2, Week 28, Week 80
Change from Baseline in Serum Immunoglobulins
Week 1, Week 2, Week 28, Week 80
Change from Baseline in Systolic Blood Pressure
Week 1, Week 2, Week 28, Week 80
Change from Baseline in Diastolic Blood Pressure
Week 1, Week 2, Week 28, Week 80
Change from Baseline in Pulse Rate
Week 1, Week 2, Week 28, Week 80
Change from Baseline in Respiratory Rate
Week 1, Week 2, Week 28, Week 80
Change from Baseline in Body Temperature
Week 1, Week 2, Week 28, Week 80
Secondary Endpoints
Part 1: Number of Participants who Achieved Normal Alanine Aminotransferase (ALT) Levels at Week 26
Week 26
Part 1: Change from Baseline in ALT Levels at Week 26
Baseline and Week 26
Part 1: Maximum Serum Concentration (Cmax) of Inebilizumab
Up to Week 26
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Part 1: InebilizumabEXPERIMENTALParticipants will receive inebilizumab as an intravenous (IV) infusion in addition to standard of care (SOC).
Part 1: PlaceboEXPERIMENTALParticipants will receive placebo as an IV infusion in addition to SOC.
Part 2: InebilizumabEXPERIMENTALParticipants will receive Inebilizumab as an IV infusion in addition to SOC.
Part 2: PlaceboEXPERIMENTALParticipants will receive placebo as an IV infusion in addition to SOC.
VIB0551EXPERIMENTALInebilizumab administered as an IV infusion.
PlaceboPLACEBO_COMPARATORPlacebo administered as an IV infusion.
Inebilizumab, (AChR-Ab+) MGEXPERIMENTALParticipants will receive inebilizumab administered intravenously (IV) on Days 1, 15, and 183 of the RCP. Participants who elect to enter the open label phase (OLP) will receive inebilizumab administered IV on OLP Days 1, IV placebo on OLP Day 15 (to avoid potential unblinding), and inebilizumab IV on OLP Days 183, 365, 547, 729, and 911.
Placebo, (AChR-Ab+) MGPLACEBO_COMPARATORParticipants will receive placebo administered IV on Days 1, 15, and 183 of the RCP. Participants who elect to enter the OLP will receive inebilizumab administered IV on OLP Days 1,15, 183, 365, 547, 729, and 911.
Inebilizumab, (MuSK-Ab+) MGEXPERIMENTALParticipants will receive inebilizumab administered IV on Days 1 and 15 of the RCP. Participants who elect to enter the OLP will receive inebilizumab administered IV on OLP Day 1, IV placebo on OLP Day 15 (to avoid potential unblinding), and inebilizumab IV on OLP Days 183, 365, 547, 729, and 911.
Placebo, (MuSK-Ab+) MGPLACEBO_COMPARATORParticipants will receive placebo administered IV on Days 1 and 15 of the RCP. Participants who elect to enter the OLP will receive inebilizumab administered IV on OLP Days 1,15, 183, 365, 547, 729, and 911.
InebilizumabEXPERIMENTALInebilizumab will be administered intravenously (IV).
Subprotocol A: Inebilizumab 3 DosesEXPERIMENTALParticipants will receive 3 doses of inebilizumab administered via an intravenous (IV) infusion.
Subprotocol A: Inebilizumab 4 DosesEXPERIMENTALParticipants will receive 4 doses of inebilizumab administered via an IV infusion.
Subprotocol B Part A: Blinatumomab Low-doseEXPERIMENTALParticipants will receive blinatumomab low-dose administered via SC injection.
Subprotocol B Part A: Blinatumomab Medium-doseEXPERIMENTALParticipants will receive blinatumomab medium-dose administered via SC injection.
Subprotocol B Part A: Blinatumomab High-doseEXPERIMENTALParticipants will receive blinatumomab high-dose administered via SC injection.
Subprotocol B Part B: Dose ExpansionEXPERIMENTALParticipants will receive blinatumomab at a dose which will be determined during Subprotocol B Part A.
Subprotocol C Part A: Blinatumomab Low-doseEXPERIMENTALParticipants will receive blinatumomab low-dose administered via SC injection during Subprotocol C Part A.
Subprotocol C Part A: Blinatumomab Medium-doseEXPERIMENTALParticipants will receive blinatumomab medium-dose administered via SC injection during Subprotocol C Part A.
Subprotocol C Part A: Blinatumomab High-doseEXPERIMENTALParticipants will receive blinatumomab high-dose administered via SC injection during Subprotocol C Part A.
Subprotocol C Part B: Dose ExpansionEXPERIMENTALParticipants will receive blinatumomab at a dose which will be determined during Subprotocol C Part A.
Interventions
NameTypeDescription
InebilizumabDRUGInebilizumab will be administered as an IV infusion.
PlaceboDRUGPlacebo will be administered as IV infusion.
Standard of CareOTHERStandard of Care
IV PlaceboDRUGParticipants will receive IV placebo matched to inebilizumab
BlinatumomabDRUGSC Injection
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Eligibility Criteria
Age Range18 Years to 74 Years
SexALL
Healthy VolunteersNo

Inclusion Criteria: * Signed informed consent. * Age ≥ 18 years or legal adult age within the country, whichever is older and \< 75 years at the time of signing the informed consent. * Participants must have either inadequate response to at least 9 months of SOC or are intolerant to SOC within 6 mo...

Countries:United StatesArgentinaAustraliaCanadaChinaFranceGermanyHong KongHungaryIndiaIrelandIsraelItalyJapanMexicoNetherlandsPolandSpainSwedenTurkey (Türkiye)United KingdomBelarusBrazilDenmarkRussiaSouth KoreaTaiwanUkraineBelgiumPortugalUnited Arab EmiratesSerbia
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Recent Changes (Last 90 Days)
LOWJul 9, 2026NCT06987539lastUpdatePostDate: changed
LOWJul 9, 2026NCT06987539lastUpdatePostDate: changed
LOWMay 29, 2026NCT06987539lastUpdatePostDate: changed
LOWMay 29, 2026NCT06987539lastUpdatePostDate: changed
LOWMay 29, 2026NCT06987539lastUpdatePostDate: changed
LOWMay 26, 2026NCT06987539primaryCompletionDate: changed
LOWMay 26, 2026NCT05549258primaryCompletionDate: changed
MEDIUMMay 26, 2026NCT06570798primaryCompletionDate: changed
LOWMay 26, 2026NCT07222553primaryCompletionDate: changed
MEDIUMMay 26, 2026NCT04524273primaryCompletionDate: changed
LOWMay 26, 2026NCT04540497primaryCompletionDate: changed
LOWMay 24, 2026NCT06987539studyFirstPostDate: changed
LOWMay 24, 2026NCT05549258studyFirstPostDate: changed
LOWMay 24, 2026NCT06570798studyFirstPostDate: changed
LOWMay 24, 2026NCT07598825studyFirstPostDate: changed
LOWMay 24, 2026NCT07222553studyFirstPostDate: changed
LOWMay 24, 2026NCT04524273studyFirstPostDate: changed
LOWMay 24, 2026NCT04540497studyFirstPostDate: changed
LOWMay 21, 2026NCT07598825NEW_TRIAL: changed
LOWMay 21, 2026NCT07598825NEW_TRIAL: changed