Study of efficacy and safety of iptacopan in participants with IC-MPGN

JRCT ID: jRCT2031230365

Registered date:27/09/2023

Basic Information

• Recruitment status: Recruiting
• Health condition(s) or Problem(s) studied: IC-MPGN
• Date of first enrollment: 07/09/2023
• Target sample size: 68
• Countries of recruitment: Canada,Japan,US,Japan,Vietnam,Japan,Turkey,Japan
• Study type: Interventional

Intervention(s)

Arm A: iptacopan 200mg b.i.d.
Arm B: Placebo to iptacopan 200mg b.i.d.

Outcome(s)

Primary Outcome

Change from baseline in eGFR. [ Time Frame: 6 months (double-blind) ]
- To demonstrate the superiority of iptacopan vs. placebo in improving eGFR

Key inclusion & exclusion criteria

• Age minimum: >= 12age old
• Age maximum: <= 60age old
• Gender: Both

Include criteria

1. Male and female participants age >= 12 and =< 60 years at screening.
2. Diagnosis of IC-MPGN as confirmed by renal biopsy within 12 months prior to enrollment in
adults and within 3 years in adolescents.
3. Prior to randomization, all participants must have been on a maximally recommended or tolerated dose of an angiotensin converting enzyme inhibitor (ACEI) or angiotensin receptor blocker (ARB) for at least 90 days. The doses of other antiproteinuric medications including mycophenolic acid, corticosteroids and mineralocorticoid receptor antagonists should be stable for at least 90 days prior to randomization.
4. UPCR >= 1.0 g/g sampled from the first morning void urine sample at Day -75 and Day -15.
5. Estimated GFR (using the CKD-EPI formula) or measured GFR >= 30 ml/min/1.73m2 at screening and Day -15.
6. Vaccination against Neisseria meningitidis infection prior to the start of study treatment. Vaccination against Streptococcus pneumoniae and Haemophilus influenzae infections should be given, if available and according to local regulations.

Exclude criteria

1. Participants who have received any cell or organ transplantation, including a kidney transplantation.
2.Patients diagnosed with secondary IC-MPGN including but not limited to any of the following conditions:
- Deposition of antigen-antibody immune complexes as a result of any infection, including
Viral- hepatitis C including HCV-associated mixed cryoglobulinemia, hepatitis B;
Bacterial-endocarditis, infected ventriculo-atrial shunt, visceral abscesses, leprosy, meningococcal meningitis; chronic bacterial infections
Protozoa/other infections- malaria, schistosomiasis, mycoplasma, leishmaniasis, filariasis, histroplasmosis)
- Deposition of immune complexes as a result of an autoimmune disease:
SLE
Sjogren syndrome
Rheumatoid arthritis
Mixed connective tissue disease, etc
- Disposition of monoclonal Ig because of a monoclonal gammopathy due to plasma cell or B cell disorders. Monoclonal gammopathy of undetermined significance (MGUS) confirmed by the measurement of serum free light chains or other investigation as per local standard of care.
- Fibrillary glomerulonephritis
3. Rapidly progressive crescentic glomerulonephritis defined as a 50% decline in the eGFR within 3 months with renal biopsy findings of glomerular crescent formation seen in at least 50% of glomeruli.
4. Renal biopsy showing interstitial fibrosis/tubular atrophy (IF/TA) of more than 50%.
5. Participants with an active systemic bacterial, viral or fungal infection within 14 days prior to study treatment administration
6. The presence of fever >= 38 degree celsius (100.4 degree farenheit) within 7 days prior to study treatment administration.
7. A history of recurrent invasive infections caused by encapsulated organisms, e.g., N. meningitidis and S. pneumoniae.
8. The use of inhibitors of complement factors (e.g., Factor B, Factor D, C3 inhibitors, anti C5 antibodies, C5a receptor antagonists) within 6 months prior to the Screening visit.
9. The use of immunosuppressants (except mycophenolic acids), cyclophosphamide or systemic corticosteroids at a dose >7.5 mg/day (or equivalent for a similar medication) within 90 days of study drug administration.

Related Information

• Primary Sponsor: Hirano Takamitsu
• Secondary ID(s): NCT05755386