Clinical trial • Phase III • Immunology

ZIGAKIBART for IgA nephropathy

Phase III trial of ZIGAKIBART for IgA nephropathy. open-label, none/not specified-controlled. 151 participants.

Overview

Trial Therapeutic Area
Immunology
Trial Disease
IgA nephropathy
Trial Stage
Phase III
Drug Modality
Monoclonal antibody
Orphan Drug
Yes

Key dates

Initial CTIS Submission Date
12-01-2026
First CTIS Authorization Date
04-05-2026

Trial design

open-label, none/not specified-controlled Phase III trial across 34 sites in Belgium, Croatia, Czechia and others.

Open Label
Yes
Comparator
None/Not specified
Target Sample Size
151
Trial Duration For Participant
672

Eligibility

Recruits 151 The application indicates vulnerable populations are selected (isVulnerablePopulationSelected:true). Signed informed consent must be obtained prior to participation in the OLE study. Country-specific consent documents include caregiver ICFs (e.g. "Caregiver-ICF_HRV") and pre-ICF telephone consent documents (e.g. "Scout Pre-ICF Telephone Consent"), and there are dedicated pregnant participant/partner ICFs; these documents indicate use of caregiver consent pathways and telephone pre-consent options where applicable..

Pregnancy Exclusion
Pregnancy or breastfeeding or intent to become pregnant or to donate sperm during the study period and until 24 weeks after last dose.
Vulnerable Population
The application indicates vulnerable populations are selected (isVulnerablePopulationSelected:true). Signed informed consent must be obtained prior to participation in the OLE study. Country-specific consent documents include caregiver ICFs (e.g. "Caregiver-ICF_HRV") and pre-ICF telephone consent documents (e.g. "Scout Pre-ICF Telephone Consent"), and there are dedicated pregnant participant/partner ICFs; these documents indicate use of caregiver consent pathways and telephone pre-consent options where applicable.

Inclusion criteria

  • {"criterion_text":"- Signed informed consent must be obtained prior to participation in the OLE study.\n- Completion of the parent study (both participants assigned to receive the investigational product and placebo) as defined by the respective protocol\n- Per Investigator’s clinical judgment, the participant may benefit from receiving open-label treatment of zigakibart 600 mg s.c. Q2W."}

Exclusion criteria

  • {"criterion_text":"- Participants who prematurely withdrew from zigakibart parent studies in IgAN for any reason\n- Pregnancy or breastfeeding or intent to become pregnant or to donate sperm during the study period and until 24 weeks after last dose.\n- History or evidence of any other clinically significant medical or psychiatric disorder, condition, disease, or laboratory finding that, in the discretion of the Investigator, constitutes an uncertain or unfavorable benefit-risk for continued long-term therapy with zigakibart.\n- Confirmed IgG levels < 3 g/L prior to first study treatment administration in the OLE study.\n- Women of child-bearing potential, defined as all women physiologically capable of becoming pregnant, from menarche until becoming post-menopausal unless they are using highly effective methods of contraception (failure rate < 1% per year) while taking study treatment and for 24 weeks after stopping study treatment. Women are considered post-menopausal if they have had 12 months of natural (spontaneous) amenorrhea with an appropriate clinical profile (e.g., hormonal profile confirming menopause and/or age-appropriate history of vasomotor symptoms).\n- Sexually active males unwilling to use a highly effective methods of contraception during intercourse while taking study treatment and for 24 weeks after stopping study treatment. In addition, male participants must not donate sperm for the time period specified above.\n- Participants who at the time of first study treatment administration in the OLE are receiving chronic dialysis (≥ 30 days) or who require kidney transplantation.\n- Acute kidney injury (AKI), defined by AKIN criteria (Mehta et al 2007) within 4 weeks of first study treatment administration in the OLE study.\n- Clinical suspicion or diagnosis of rapidly progressive glomerulonephritis (RPGN), defined by KDIGO guidelines, or another glomerulopathy at the time of first study treatment administration in the OLE study.\n- Received a live vaccination within 12 weeks prior to first study treatment administration in the OLE study or plan to have a live vaccination within 6 months after the last dose of study treatment.\n- Use of systemic corticosteroid therapy (including budesonide) or other immunosuppressive therapy such as but not limited to mycophenolate, azathioprine, cyclosporine, tacrolimus, cyclophosphamide, etc., and herbs such as Tripterygium Wilfordii Hook F, Caulis sinomenii, and Sinomenium acutum for > 2 weeks in the 12 weeks prior to first study treatment administration in the OLE study; use of rituximab within 180-days of first study treatment administration in the OLE study.\n- Current severe infection at the time of first study treatment in the OLE study or history of recurrent, severe, infections as determined by the Investigator.\n- Newly diagnosed positive serology for hepatitis A virus IgM antibodies (anti-HAV IgM), hepatitis B surface antigen (HBsAg), detectable hepatitis B virus (HBV) DNA, hepatitis C virus (HCV) antibodies (participants who completed treatment and are persistently antibody positive but have documentation of negative HCV polymerase chain reaction [PCR] will be allowed), or antibodies to HIV-1 and/or HIV-2.\n- Newly diagnosed malignancy (participants with basal cell carcinoma that was completely resected or curatively treated cervical carcinoma in situ or low-risk prostate cancer (i.e., Gleason score < 7 and prostate specific antigen < 10 ng/mL) are eligible for the study)."}

Endpoints

Primary endpoints

  • {"endpoint_text":"- Type, incidence, severity, seriousness, and relatedness of treatment-emergent adverse events (TEAEs)","definition_or_measurement_approach":"Collection and reporting of treatment-emergent adverse events (TEAEs) including type, incidence, severity, seriousness and assessment of relatedness to study treatment as recorded during the study."}
  • {"endpoint_text":"- Incidence, severity, seriousness, and relatedness of adverse events of special interest (AESI)","definition_or_measurement_approach":"Collection and reporting of adverse events of special interest (AESI) including incidence, severity, seriousness and assessment of relatedness to study treatment as recorded during the study."}

Secondary endpoints

  • {"endpoint_text":"- Change from Baseline to Weeks 48 and 96 in UPCR based on 24h-urine collection","definition_or_measurement_approach":"Change in urine protein-to-creatinine ratio (UPCR) from baseline to Weeks 48 and 96 measured using 24-hour urine collection."}
  • {"endpoint_text":"- Change from Baseline to Week 96 in eGFR, using the chronic kidney disease-epidemiology collaboration (CKD-EPI) creatinine equation","definition_or_measurement_approach":"Change in estimated glomerular filtration rate (eGFR) from baseline to Week 96 calculated using the CKD-EPI creatinine equation."}
  • {"endpoint_text":"- Change from BEYOND parent study Baseline to Week 96 of OLE study in eGFR","definition_or_measurement_approach":"Change in eGFR from the BEYOND parent study baseline to Week 96 of the OLE study (method as per eGFR assessments)."}
  • {"endpoint_text":"- Serum concentrations of zigakibart","definition_or_measurement_approach":"Measurement of serum concentrations of zigakibart (PK sampling/assays) at scheduled timepoints."}
  • {"endpoint_text":"- Changes from baseline in immunoglobulin levels","definition_or_measurement_approach":"Laboratory measurement of immunoglobulin levels and comparison to baseline values."}
  • {"endpoint_text":"- Presence of circulating binding and neutralizing antidrug antibodies (ADA/Nab)","definition_or_measurement_approach":"Assessment of anti-drug antibodies (binding and neutralizing) using immunogenicity assays."}
  • {"endpoint_text":"- Safety laboratory parameters and vital signs","definition_or_measurement_approach":"Routine safety laboratory testing and vital signs assessments per schedule to monitor safety."}

Recruitment

Digital Remote Recruitment
Yes
Planned Sample Size
151
Recruitment Window Months
77
Consent Approach
Signed informed consent must be obtained prior to participation. Pre-ICF telephone consent options are provided (documents titled 'Scout Pre-ICF Telephone Consent' are included for multiple countries). Country-specific informed consent forms and supplementary ICFs are provided (including caregiver ICFs and pregnant participant/partner ICFs). Consent documents are available in multiple languages as per the submission (examples: English, French, Dutch, German, Greek, Croatian, Czech, Italian, Spanish).

Geography

Total Number Of Sites
34
Total Number Of Participants
69

Belgium

Earliest CTIS Part Ii Submission Date
22-04-2026
Latest Decision Or Authorization Date
04-05-2026
Processing Time Days
12
Number Of Sites
5
Number Of Participants
15

Sites

Site Name
Imelda
Department Name
Nephrology
Principal Investigator Name
Wim Lemahieu
Principal Investigator Email
wim.lemahieu@imelda.be
Contact Person Name
Wim Lemahieu
Contact Person Email
wim.lemahieu@imelda.be
Site Name
HUmani
Department Name
Nephrology
Principal Investigator Name
Aline Pourcelet
Principal Investigator Email
aline.pourcelet@chu-charleroi.be
Contact Person Name
Aline Pourcelet
Site Name
Centre hospitalier universitaire de Liege
Department Name
Nephrology
Principal Investigator Name
Antoine Bouquegneau
Principal Investigator Email
antoine.bouquegneau@chuliege.be
Contact Person Name
Antoine Bouquegneau
Site Name
Cliniques Universitaires Saint-Luc
Department Name
Nephrology
Principal Investigator Name
Nathalie Demoulin
Principal Investigator Email
nathalie.demoulin@saintluc.uclouvain.be
Contact Person Name
Nathalie Demoulin
Site Name
Universitair Ziekenhuis Gent
Department Name
Nephrology
Principal Investigator Name
Marijn Speeckaert
Principal Investigator Email
marijn.speeckaert@uzgent.be
Contact Person Name
Marijn Speeckaert
Contact Person Email
marijn.speeckaert@uzgent.be

Croatia

Earliest CTIS Part Ii Submission Date
06-04-2026
Latest Decision Or Authorization Date
11-05-2026
Processing Time Days
35
Number Of Sites
2
Number Of Participants
5

Sites

Site Name
Specijalna Bolnica Medico
Principal Investigator Name
Bozidar Vujicic
Principal Investigator Email
vujicic.bozidar@gmail.com
Contact Person Name
Bozidar Vujicic
Contact Person Email
vujicic.bozidar@gmail.com
Site Name
Poliklinika BONIFARM
Principal Investigator Name
Ivana Vukovic Brinar
Principal Investigator Email
ivemedex@yahoo.com
Contact Person Name
Ivana Vukovic Brinar
Contact Person Email
ivemedex@yahoo.com

Czechia

Earliest CTIS Part Ii Submission Date
08-04-2026
Latest Decision Or Authorization Date
04-05-2026
Processing Time Days
26
Number Of Sites
1
Number Of Participants
3

Sites

Site Name
Vseobecna Fakultni Nemocnice V Praze
Department Name
Všeobecná fakultní nemocnice v Praze Klinika nefrologie
Principal Investigator Name
Vladimir Tesař
Principal Investigator Email
vladimir.tesar@vfn.cz
Contact Person Name
Vladimir Tesař
Contact Person Email
vladimir.tesar@vfn.cz

France

Earliest CTIS Part Ii Submission Date
05-03-2026
Latest Decision Or Authorization Date
04-05-2026
Processing Time Days
60
Number Of Sites
5
Number Of Participants
8

Sites

Site Name
Centre Hospitalier Universitaire Grenoble Alpes
Department Name
Service de Néphrologie
Principal Investigator Name
Pierre-Louis CARRON
Principal Investigator Email
PLCarron@chu-grenoble.fr
Contact Person Name
Pierre-Louis CARRON
Contact Person Email
PLCarron@chu-grenoble.fr
Site Name
Assistance Publique Hopitaux De Paris
Department Name
Service de Néphrologie
Principal Investigator Name
Evangéline PILLEBOUT
Principal Investigator Email
evangeline.pillebout@aphp.fr
Contact Person Name
Evangéline PILLEBOUT
Contact Person Email
evangeline.pillebout@aphp.fr
Site Name
Hospices Civils De Lyon
Department Name
Service de Néphrologie
Principal Investigator Name
Sandrine LEMOINE
Principal Investigator Email
sandrine.lemoine01@chu-lyon.fr
Contact Person Name
Sandrine LEMOINE
Contact Person Email
sandrine.lemoine01@chu-lyon.fr
Site Name
Centre Hospitalier Universitaire De Lille
Department Name
Service de Néphrologie – Dialyse - Transplantation
Principal Investigator Name
François GLOWACKI
Principal Investigator Email
francois.glowacki@chu-lille.fr
Contact Person Name
François GLOWACKI
Contact Person Email
francois.glowacki@chu-lille.fr
Site Name
Assistance Publique Hopitaux De Paris
Department Name
Service de Néphrologie - Transplantation rénale adultes
Principal Investigator Name
Myriam DAO
Principal Investigator Email
myriam.dao@aphp.fr
Contact Person Name
Myriam DAO
Contact Person Email
myriam.dao@aphp.fr

Germany

Earliest CTIS Part Ii Submission Date
13-03-2026
Latest Decision Or Authorization Date
06-05-2026
Processing Time Days
54
Number Of Sites
5
Number Of Participants
10

Sites

Site Name
Barmherzige Brueder Trier gGmbH
Department Name
Innere Medizin II
Principal Investigator Name
Stefan Weiner
Principal Investigator Email
s.weiner@bbtgruppe.de
Contact Person Name
Stefan Weiner
Contact Person Email
s.weiner@bbtgruppe.de
Site Name
Medizinische Hochschule Hannover
Department Name
Klinik für Nieren- und Hochdruckerkrankungen
Principal Investigator Name
Kai Martin Schmidt-Ott
Principal Investigator Email
schmidt-ott.kai@mh-hannover.de
Contact Person Name
Kai Martin Schmidt-Ott
Contact Person Email
schmidt-ott.kai@mh-hannover.de
Site Name
Universitaetsklinikum Augsburg
Department Name
II. Medizinische Klinik
Principal Investigator Name
Aydin Er
Principal Investigator Email
aydin.er@uk-augsburg.de
Contact Person Name
Aydin Er
Contact Person Email
aydin.er@uk-augsburg.de
Site Name
Universitaetsklinikum Magdeburg AöR
Department Name
Klinik für Nieren- und Hochdruckkrankheiten, Diabetologie & Endokrinologie
Principal Investigator Name
Peter Mertens
Principal Investigator Email
peter.mertens@med.ovgu.de
Contact Person Name
Peter Mertens
Contact Person Email
peter.mertens@med.ovgu.de
Site Name
Universitaetsklinikum Jena KöR
Principal Investigator Name
Martin Busch
Principal Investigator Email
martin.busch@med.uni-jena.de
Contact Person Name
Martin Busch
Contact Person Email
martin.busch@med.uni-jena.de

Greece

Earliest CTIS Part Ii Submission Date
18-02-2026
Latest Decision Or Authorization Date
04-05-2026
Processing Time Days
75
Number Of Sites
5
Number Of Participants
6

Sites

Site Name
General Hospital Of Thessaloniki Agios Pavlos
Department Name
Renal Department
Principal Investigator Name
Sofia Spaia
Principal Investigator Email
spaiasofia@gmail.com
Contact Person Name
Sofia Spaia
Contact Person Email
spaiasofia@gmail.com
Site Name
University General Hospital Of Thessaloniki Ahepa
Department Name
2nd Department of Nephrology
Principal Investigator Name
Vassilios Liakopoulos
Principal Investigator Email
vliak@auth.gr
Contact Person Name
Vassilios Liakopoulos
Contact Person Email
vliak@auth.gr
Site Name
University General Hospital Attikon General Hospital Of West Attica H Agia Varvara
Department Name
Nephrology Unit
Principal Investigator Name
Sophia Lionaki
Principal Investigator Email
sofia.lionaki@gmail.com
Contact Person Name
Sophia Lionaki
Contact Person Email
sofia.lionaki@gmail.com
Site Name
General Hospital Of Ioannina G. Hatzikosta
Department Name
Nephrology Department
Principal Investigator Name
Emilios Andrikos
Principal Investigator Email
emilioandrikos@gmail.com
Contact Person Name
Emilios Andrikos
Contact Person Email
emilioandrikos@gmail.com
Site Name
General University Hospital Of Patras
Department Name
Department of Nephrology
Principal Investigator Name
Evangelos Papachristou
Principal Investigator Email
epapadoct@hotmail.com
Contact Person Name
Evangelos Papachristou
Contact Person Email
epapadoct@hotmail.com

Italy

Earliest CTIS Part Ii Submission Date
30-01-2026
Latest Decision Or Authorization Date
05-05-2026
Processing Time Days
95
Number Of Sites
6
Number Of Participants
14

Sites

Site Name
Azienda Universitaria Ospedaliera Consorziale Policlinico Bari
Department Name
Nephrology, Dialysis and Transplantation Unit
Principal Investigator Name
Loreto Gesualdo
Principal Investigator Email
loreto.gesualdo@uniba.it
Contact Person Name
Loreto Gesualdo
Contact Person Email
loreto.gesualdo@uniba.it
Site Name
Azienda Ospedaliero Universitaria Di Modena
Department Name
Division of Nephrology, Dialysis and Kidney Transplantation
Principal Investigator Name
Riccardo Magistroni
Principal Investigator Email
riccardo.magistroni@unimore.it
Contact Person Name
Riccardo Magistroni
Contact Person Email
riccardo.magistroni@unimore.it
Site Name
Istituti Clinici Scientifici Maugeri S.p.A. Sb
Department Name
U.O. di Nefrologia e Dialisi
Principal Investigator Name
Ciro Esposito
Principal Investigator Email
ciro.esposito@unipv.it
Contact Person Name
Ciro Esposito
Contact Person Email
ciro.esposito@unipv.it
Site Name
Fondazione Policlinico Universitario Agostino Gemelli IRCCS
Department Name
Unità operativa complessa di Nefrologia
Principal Investigator Name
Giuseppe Grandaliano
Principal Investigator Email
giuseppe.grandaliano@policlinicogemelli.it
Contact Person Name
Giuseppe Grandaliano
Site Name
Azienda Ospedaliera Universitaria Federico II Di Napoli
Department Name
U.O.C. Nefrologia
Principal Investigator Name
Ivana Capuano
Principal Investigator Email
ivanacapuano@libero.it
Contact Person Name
Ivana Capuano
Contact Person Email
ivanacapuano@libero.it
Site Name
Azienda Sanitaria Universitaria Giuliano Isontina
Department Name
SC di Nefrologia e Dialisi
Principal Investigator Name
Vittorio Di Maso
Principal Investigator Email
vittorio.dimaso@asugi.sanita.fvg.it
Contact Person Name
Vittorio Di Maso

Spain

Earliest CTIS Part Ii Submission Date
30-01-2026
Latest Decision Or Authorization Date
07-05-2026
Processing Time Days
97
Number Of Sites
5
Number Of Participants
8

Sites

Site Name
Hospital Universitari Vall D Hebron
Department Name
Nephrology
Principal Investigator Name
Irene Agraz Pamplona
Principal Investigator Email
irene.agraz@vallhebron.cat
Contact Person Name
Irene Agraz Pamplona
Contact Person Email
irene.agraz@vallhebron.cat
Site Name
Hospital Universitario 12 De Octubre
Department Name
Nephrology
Principal Investigator Name
Eduardo Gutierrez Martínez
Principal Investigator Email
eduardogutmat90@gmail.com
Contact Person Name
Eduardo Gutierrez Martínez
Contact Person Email
eduardogutmat90@gmail.com
Site Name
Hospital Universitari De Girona Doctor Josep Trueta
Department Name
Nephrology
Principal Investigator Name
Ana Merino Ribas
Principal Investigator Email
amerinor.girona.ics@gencat.cat
Contact Person Name
Ana Merino Ribas
Contact Person Email
amerinor.girona.ics@gencat.cat
Site Name
Hospital De Manises
Department Name
Nephrology
Principal Investigator Name
Rafael García Maset
Principal Investigator Email
garcia_rafmas@gva.es
Contact Person Name
Rafael García Maset
Contact Person Email
garcia_rafmas@gva.es
Site Name
Hospital Universitario Virgen De La Macarena
Department Name
Nephrology
Principal Investigator Name
Mercedes Salgueira Lazo
Contact Person Name
Mercedes Salgueira Lazo

Sponsor

Primary sponsor

Full Name
Novartis Pharma AG
Organisation Type
Pharmaceutical company
Country Of Registered Address
Switzerland

Contract research organisations

Name
Parexel International (IRL) Limited
Responsibilities
sponsorDuties codes: [12]; contact: Clinicaltrial.Enquiries@parexel.com
Name
PPD Global Ltd.
Responsibilities
sponsorDuties codes: [1]; contact: CRGApprovalsGR.sm@thermofisher.com
Name
PPD Development LP
Responsibilities
sponsorDuties codes: [1,13,2,4,5,8]; contact: crgeuctrinquiry.sm@thermofisher.com
Name
IQVIA Limited
Responsibilities
sponsorDuties codes: [3]; contact: eu_clinical_trials_information@iqvia.com
Name
Labcorp Development (Asia) Pte Ltd
Responsibilities
sponsorDuties codes: [4]; contact: ChinHan.Cheng@labcorp.com
Name
Medidata Solutions Inc.
Responsibilities
sponsorDuties codes: [7]; contact: info@medidata.com

Third parties

  • {"country":"United States","full_name":"Medidata Solutions Inc.","duties_or_roles":"sponsorDuties codes: [7]","organisation_type":"Non-Pharmaceutical company"}
  • {"country":"Ireland","full_name":"Parexel International (IRL) Limited","duties_or_roles":"sponsorDuties codes: [12]","organisation_type":"Pharmaceutical company"}
  • {"country":"United Kingdom","full_name":"World Courier Management Limited","duties_or_roles":"sponsorDuties codes: [15]; value: 24H urine collection sample pick up at patient home and delivery at site","organisation_type":"Health care"}
  • {"country":"Greece","full_name":"PPD Global Ltd.","duties_or_roles":"sponsorDuties codes: [1]","organisation_type":"Pharmaceutical company"}
  • {"country":"United States","full_name":"Scout Clinical","duties_or_roles":"sponsorDuties codes: [15]; value: Patient Travel reimbursment","organisation_type":"Hospital/Clinic/Other health care facility"}
  • {"country":"United Kingdom","full_name":"IQVIA Limited","duties_or_roles":"sponsorDuties codes: [3]","organisation_type":"Pharmaceutical company"}
  • {"country":"United States","full_name":"PPD Development LP","duties_or_roles":"sponsorDuties codes: [1,13,2,4,5,8]","organisation_type":"Pharmaceutical company"}
  • {"country":"Greece","full_name":"Pharmacy Ioannis Emm Anagnostakis & Co OE","duties_or_roles":"sponsorDuties codes: [15]; value: Pregnancy tests vendor for Greek sites","organisation_type":"Health care"}
  • {"country":"Singapore","full_name":"Labcorp Development (Asia) Pte Ltd","duties_or_roles":"sponsorDuties codes: [4]","organisation_type":"Pharmaceutical company"}

Investigational products

Investigational Product Name
Bion 1301/FUB523
Active Substance
ZIGAKIBART
Modality
Monoclonal antibody
Routes Of Administration
Subcutaneous injection
Route
Subcutaneous injection
Authorisation Status
Authorised (prodAuthStatus:1)
Orphan Designation
Yes
Starting Dose
600 mg s.c. Q2W
Dose Levels
600 mg
Frequency
Q2W
Maximum Dose
600 mg (maxDailyDoseAmount: 600 mg)

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