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Zigakibart

Phase 3

IgA Nephropathy | Small molecule | Nephrology |Novartis AG|Last Updated: Aug 17, 2026

Target and mechanism

ModalitySmall molecule

Also known as BION-1301, BION-1301 Single Dose

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials2
Total Enrollment486

FDA Designations

No designations recorded

Clinical trial landscape

Zigakibart · 5 trials · 12 indications

Phase 3 2Phase 2 1Phase 1 2
NCT06858319Open-label Extension Study of Zigakibart in Adults With IgA Nephropathy.Kidney Diseases
RECRUITING220 Analytics
NCT05852938A Study of Zigakibart in Adults With IgA NephropathyIgA Nephropathy
ACTIVE NOT_RECRUITING383 Analytics
PHASE3RECRUITING
Open-label Extension Study of Zigakibart in Adults With IgA Nephropathy.
Kidney DiseasesUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
A Study of Zigakibart in Adults With IgA Nephropathy
IgA NephropathyUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of participants with adverse events.
Date of first administration of study treatment to 24 weeks after the date of the last actual administration of study treatment

Number of participants with adverse events will be provided.

Number of participants with serious adverse events.
Date of first administration of study treatment to 24 weeks after the date of the last actual administration of study treatment

Number of participants with serious adverse events will be provided.

Number of participants with adverse events of special interest.
Date of first administration of study treatment to 24 weeks after the date of the last actual administration of study treatment

Number of participants with adverse events of special interest will be provided.

Change from baseline in eGFR
Baseline and 104 weeks or approximately 2 years

Change from Baseline to Week 104 in eGFR using the CKD-EPI 2021 creatinine equation

Change in mesangial IgA deposition
Baseline to Week 53 or 105

Change in mesangial IgA deposition as assessed by intensity of immunofluorescence staining

Number of participants with Treatment Emergent Adverse Events (TEAEs) and treatment-emergent serious adverse events (SAEs)
Up to 276 weeks

TEAEs and SAEs are assessed throughout each participant's study participation according to the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE).

Change from baseline in systolic and diastolic blood pressure
Baseline and up to 276 weeks.
Change from baseline in estimated glomerular filtration rate (eGFR)
Baseline and up to 276 weeks

Secondary Endpoints

Change in UPCR from Baseline to Week 48 and Week 96.
Baseline visit, Week 48 and Week 96.
Change in eGFR from Baseline to Week 96.
Baseline visit and Week 96.
Change in eGFR from BEYOND parent study Baseline to Week 96 of OLE study.
Baseline visit and Week 96.
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
zigakibartEXPERIMENTALParticipants will receive zigakibart.
BION-1301EXPERIMENTAL600mg subcutaneous administration every 2 weeks for 104 weeks
PlaceboPLACEBO_COMPARATORsubcutaneous administration every 2 weeks for 104 weeks
Part 1: BION-1301EXPERIMENTALUp to 5 cohorts with single ascending doses of BION-1301 administered by intravenous (IV) infusion in healthy volunteers.
Part 1: PlaceboPLACEBO_COMPARATORHealthy Volunteers receive a single dose of placebo administered by IV infusion.
Part 2: BION-1301EXPERIMENTALUp to 4 cohorts with multiple doses of BION-1301 administered by intravenous (IV) infusion in healthy volunteers.
Part 2: PlaceboPLACEBO_COMPARATORHealthy Volunteers receive placebo by IV infusion.
Part 3: BION-1301EXPERIMENTALTwo cohorts of participants with IgAN receive multiple doses of BION-1301 by IV infusion (Cohort 1) or SC injection (Cohort 2) at 600mg/biweekly.
Part 4 Retreatment: BION-1301EXPERIMENTALEligible participants with IgAN from Part 3 may enroll in Part 4 due to disease progression or by choice for optional retreatment and receive SC injection at 600mg/biweekly.

Interventions

NameTypeDescription
zigakibartDRUGsolution for subcutaneous injection
BION-1301DRUGBION-1301 Pre-Filled Syringe (PFS) 600mg subcutaneous administration every 2 weeks for 104 weeks.
PlaceboDRUGPlacebo - PFS subcutaneous administration every 2 weeks for 104 weeks.
BION-1301 Single DoseDRUGA single IV infusion infusion of BION-1301 at doses ranging from 10 to 1350 mg, administered once
Placebo Single DoseDRUGA single IV infusion of placebo
BION-1301 Multiple DosesDRUGPart 2: Multiple IV infusions of BION 1301 administered every 2 weeks (Q2W) at doses of 50 mg, 150 mg or 450 mg for up to 3 doses. Part 3: Repeated dosing of BION 1301: 450 mg IV Q2W for ≥24 weeks followed by 600 mg SC Q2W, or 600 mg SC Q2W throughout.
Placebo Multiple DosesDRUGMultiple IV infusions of placebo administered every 2 weeks for up to 3 doses
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Eligibility Criteria

Age Range18 Years to 100 Years
SexALL
Healthy VolunteersNo
Study Sites26

Inclusion Criteria: 1. Signed informed consent must be obtained prior to participation in the OLE study. 2. Completion of the parent study (both participants assigned to receive the investigational product and placebo) as defined by the respective protocol. 3. Per Investigator's clinical judgment, ...

Countries:United StatesArgentinaAustraliaCanadaMalaysiaMexicoSouth KoreaSpainTaiwanBelgiumBrazilChinaCroatiaCzechiaFranceGermanyGreeceIndiaIsraelItalyJapanTurkey (Türkiye)United KingdomPoland
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Recent Changes (Last 90 Days)

LOWAug 17, 2026NCT06858319lastUpdatePostDate: changed
LOWAug 17, 2026NCT06858319lastUpdatePostDate: changed
LOWAug 11, 2026NCT07146906lastUpdatePostDate: changed
LOWAug 11, 2026NCT07146906lastUpdatePostDate: changed
LOWAug 11, 2026NCT07146906lastUpdatePostDate: changed
LOWJul 20, 2026NCT06858319lastUpdatePostDate: changed
LOWJul 20, 2026NCT06858319lastUpdatePostDate: changed
MEDIUMJul 17, 2026NCT03945318TRIAL_REMOVED: changed
MEDIUMJul 17, 2026NCT03945318TRIAL_REMOVED: changed
MEDIUMJul 17, 2026NCT03945318TRIAL_REMOVED: changed
LOWJun 23, 2026NCT07146906lastUpdatePostDate: changed
LOWJun 23, 2026NCT07146906lastUpdatePostDate: changed
HIGHJun 16, 2026NCT03945318Status: ACTIVE_NOT_RECRUITING → COMPLETED
HIGHJun 16, 2026NCT03945318Status: ACTIVE_NOT_RECRUITING → COMPLETED
HIGHJun 16, 2026NCT03945318Status: ACTIVE_NOT_RECRUITING → COMPLETED

Frequently asked questions about Zigakibart

What is zigakibart used for?

Zigakibart is an investigational monoclonal antibody being developed for kidney diseases, specifically immunoglobulin A nephropathy (IgAN), a form of glomerulonephritis. It is currently in clinical development and is not yet approved by regulatory authorities.

Who is developing zigakibart?

Zigakibart is being developed by Novartis AG, a global pharmaceutical company listed on the New York Stock Exchange under the ticker symbol NVS. The company is conducting clinical trials to evaluate the drug's safety and efficacy in patients with IgA nephropathy.

What phase is zigakibart in?

Zigakibart is currently in Phase 2 clinical development. A Phase 2 study is actively recruiting participants to assess the drug's effects in IgA nephropathy, and an open-label extension study is also listed as Phase 3, though the overall development program is still investigational.

What clinical trials is zigakibart in?

Zigakibart is being studied in two clinical trials. NCT07146906 is a Phase 2 study assessing the effects of zigakibart on IgA nephropathy, enrolling 32 participants. NCT06858319 is an open-label extension study in adults with IgA nephropathy, enrolling 220 participants across multiple countries.

How does zigakibart work?

Zigakibart is a monoclonal antibody, a type of biologic drug that targets specific proteins involved in disease processes. In IgA nephropathy, it is designed to interfere with the underlying immune mechanisms that contribute to kidney damage, though the precise molecular target has not been specified in available information.

Is zigakibart the same as any other drug?

No alternative names for zigakibart have been reported. It is identified solely by its investigational name zigakibart in clinical trial registrations and is not known to be marketed under any other brand name.