Skip to content

Atacicept in Subjects with IgA Nephropathy

A Phase 2b/3, Multi-part, Randomized, Double-Blinded, Placebo-Controlled Study to Evaluate the Efficacy and Safety of Atacicept in Subjects with IgA Nephropathy (IgAN) - ORIGIN 3

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2031230629
Enrollment
36
Registered
2024-02-14
Start date
2024-05-20
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Immunoglobulin A Nephropathy (IgAN)

Interventions

Once weekly subcutaneous (SC) injections of Atacicept or placebo by prefilled syringe

Sponsors

Michael Eric
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Must have the ability to understand and sign a written informed consent form 2. Male or female of >=18 years of age 3. Total urine protein excretion >=1.0 g per 24-hour or urine protein to creatinine ratio (UPCR) >=1.0 mg/mg based on a 24-hour urine sample during the Screening Period 4. Diagnosis of IgAN as demonstrated by renal biopsy conducted within 10 years 5. eGFR >=30 mL/min/1.73 m2, as per the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation. 6. On a stable prescribed regimen of RAASi for at least 12 weeks that is at the maximum labeled or tolerated dose at Screening 7. Systolic blood pressure <=150 mmHg and less, and diastolic blood pressure <=90 mmHg

Exclusion criteria

Exclusion criteria: 1. IgAN secondary to another condition (e.g., liver cirrhosis), or other causes of mesangial IgA deposition including IgA vasculitis (i.e., Henoch-Schonlein purpura), systemic lupus erythematosus (SLE), dermatitis herpetiformis, ankylosing spondylitis 2. Total urine protein excretion >= 5g per 24-hour or urine protein to creatinine ratio (UPCR) >= 5 mg/mg based on a 24-hour urine sample during the Screening Period 3. Evidence of rapidly progressive glomerulonephritis (loss of >=50% of eGFR within 3 months of screening) 4. Evidence of nephrotic syndrome within 6 months of screening (serum albumin 3.5 mg/mg 5. Renal or other organ transplantation prior to, or expected during the study 6. Concomitant chronic renal disease in addition to IgAN 7. Uncontrolled diabetes, defined as hemoglobin-A1c (HbA1c) >7.5% at screening 8. History of tuberculosis (TB), untreated latent TB infection (LTBI), or evidence of active TB determined by a positive Quantiferon test 9. Participation in the Phase 2b (Parts A and B) study or any previous treatment with atacicept

Design outcomes

Primary

MeasureTime frame
Annualized Rate of change in eGFR (ie., annualized eGFR total slope)

Secondary

MeasureTime frame
Urine protein to creatinine ratio (UPCR)

Countries

Argentina, Australia, Belgium, Brazil, Canada, China, Croatia, Czech Republic, Denmark, Estonia, France, Germany, Greece, Hong Kong, India, Ireland, Italy, Japan, Malaysia, Philippines, Poland, Portugal, Singapore, South Korea, Spain, Sri Lanka, Taiwan, Thailand, Turkey, United Kingdom, United States

Contacts

Public ContactTomoko Kubota

Medpace Japan K.K.

RSJapan1@medpace.com+81-3-4563-7000

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026