Testing the drug YKST02 in adults with IgA nephropathy

Trial details

Who runs it

Union Hospital, Tongji Medical College, Huazhong University of Science and Technology

Trial code

NCT07498673

Record updated

12 May 2026

Original description

The goal of this clinical trial is to evaluate the safety and tolerability of YKST02 and to explore its potential to treat adults with primary IgA nephropathy (IgAN). The study will also assess how the drug moves through the body and how it affects the immune system.Read full original descriptionShow less

A Study to Evaluate the Safety, Tolerability, Pharmacokinetics, Pharmacodynamics, and Preliminary Efficacy of YKST02 in Participants With Primary IgA Nephropathy

The goal of this clinical trial is to evaluate the safety and tolerability of YKST02 and to explore its potential to treat adults with primary IgA nephropathy (IgAN). The study will also assess how the drug moves through the body and how it affects the immune system.

The main questions it aims to answer are:

* Is YKST02 safe and well tolerated? * Does YKST02 reduce protein levels in the urine? * How does YKST02 behave in the body (pharmacokinetics, PK)? * How does YKST02 affect the immune system (pharmacodynamics, PD)? Participants are adults with IgAN who have persistent proteinuria despite standard treatment.

Participants will:

* Receive YKST02 by intravenous (IV) infusion * Be monitored after each dose for safety * Attend clinic visits for safety assessments and laboratory tests * Provide blood and urine samples during the study and follow-up period

Inclusion: Diagnosis of primary IgA nephropathy (IgAN); Proteinuria above a protocol-defined threshold at screening; Receiving stable standard-of-care therapy for IgAN for an adequate duration prior to enrollment, unless contraindicated or not tolerated; Women of childbearing potential must have a negative pregnancy test prior to study drug administration and agree to use effective contraception; male participants must agree to use effective contraception; Able to understand the study procedures and provide written informed consent.

Exclusion: Requirement for systemic corticosteroids for concomitant conditions; Use of immunosuppressive, targeted, or biologic therapies within a defined period prior to screening or anticipated use during the study; Prior treatment with B-cell-depleting or other targeted biologic therapies within a defined period; Clinically significant cardiovascular or cerebrovascular disease within 6 months prior to screening; Major surgery within 4 weeks prior to screening or planned during the study; Receipt of another investigational product within 4 weeks or 5 half-lives (whichever is longer) prior to screening; Receipt of live or attenuated vaccines within 4 weeks prior to screening or planned during the study; Secondary IgA nephropathy (e.g., associated with liver disease, autoimmune disorders, infections, or other systemic conditions); Other clinically significant renal diseases unrelated to IgAN (e.g., diabetic nephropathy, lupus nephritis, vasculitis); Nephrotic syndrome considered unsuitable for study participation; History of demyelinating disorders (e.g., multiple sclerosis); History of organ transplantation or planned transplantation during the study; Active infection requiring systemic therapy, recent serious infection, or chronic/recurrent infections; Known active hepatitis B, hepatitis C, or human immunodeficiency virus (HIV) infection; Active or untreated latent tuberculosis; History of splenectomy; Uncontrolled comorbidities (e.g., poorly controlled hypertension or diabetes); Malignancy within the past 5 years, except adequately treated non-invasive cancers; Known hypersensitivity to YKST02 or its components; Any condition that, in the investigator's judgment, would make the participant unsuitable for the study; Estimated glomerular filtration rate (eGFR) <45 mL/min/1.73 m²; Clinically significant abnormal laboratory findings (e.g., hematologic, hepatic, or coagulation abnormalities); Rapidly progressive glomerulonephritis or rapidly declining renal function; Immunodeficiency or low immunoglobulin G (IgG) levels below normal; Current dialysis or anticipated need for dialysis during the study.

ClinicalTrials.gov NCT07498673