Komori
Other Disclosures4578Otsuka Holdings Co.,Ltd.Pharmaceuticals

Positive renal function (eGFR) data from the Phase 3 trial of VOYXACT (sibeprenlimab), a treatment for IgA nephropathy

For VOYXACT (sibeprenlimab), Otsuka Pharmaceutical's treatment for IgA nephropathy, renal function data at 12 months from an interim analysis of the Phase 3 trial were announced. Renal function was largely maintained in the sibeprenlimab group, which had better results than the placebo group. The company also began the rolling submission of application materials to the U.S. FDA toward regulatory approval.

Worth reading
64In focus
0–100. This measures how worthwhile something is to read, not how good or bad the company is.
Direction
Improvement
Direction inferred from the company’s description.
Scale
5.5
Treatment difference in eGFR at 12 months (mL/min/1.73 m²)
Wording
Conditional
How definitive the wording is.

Announced details

VOYXACT® (sibeprenlimab)
Applicable field (uses covered by this announcement)

Treatment of IgA nephropathy in adults

What the company reported numerically
Quantitative Effects

At 12 months, mean eGFR changed by +0.7 mL/min/1.73 m² in the sibeprenlimab group and −4.8 mL/min/1.73 m² in the placebo group, for a treatment difference of 5.5 mL/min/1.73 m². The treatment difference in eGFR slope was 4.6 mL/min/1.73 m² per year.

Usage history

The VISIONARY trial included 320 participants: 152 in the sibeprenlimab group and 168 in the placebo group.

Relationship between the counterparty and the company
Otsuka Holdings Co.,Ltd.4578
Relationship with the Company

Otsuka Pharmaceutical Co., Ltd. is a wholly owned subsidiary of Otsuka Holdings Co.,Ltd. Otsuka Pharmaceutical Development & Commercialization, Inc. (OPDC) is Otsuka Pharmaceutical's U.S. subsidiary. Otsuka Pharmaceutical and OPDC conducted and announced the VISIONARY trial.

CounterpartyU.S. Food and Drug Administration (FDA)European Renal Association (ERA)

The ERA is described as the organization holding the congress in Glasgow, UK. The FDA is described as the U.S. regulatory authority.

Registration number and expiry date

NCT05248646 (VISIONARY trial registration number)

Location (as indicated in this announcement)

Otsuka Pharmaceutical: Tokyo. OPDC: Princeton, New Jersey, U.S.

Impact on Business Performance

There is no change to the consolidated earnings forecast for the fiscal year ending December 2026.

The company does not address Contract Value / Offering price.

Source (materials cited by the company)

Presentation at the European Renal Association (ERA). The New England Journal of Medicine (2025, “Sibeprenlimab in IgA Nephropathy — Interim Analysis of a Phase 3 Trial”). KDIGO international guidelines.

Announced details
ItemDetails
Names of Products / Services CoveredVOYXACT® (sibeprenlimab)
CounterpartyU.S. Food and Drug Administration (FDA), European Renal Association (ERA)
Counterparty overviewThe ERA is described as the organization holding the congress in Glasgow, UK. The FDA is described as the U.S. regulatory authority.
Relationship with the CompanyOtsuka Pharmaceutical Co., Ltd. is a wholly owned subsidiary of Otsuka Holdings Co.,Ltd. Otsuka Pharmaceutical Development & Commercialization, Inc. (OPDC) is Otsuka Pharmaceutical's U.S. subsidiary. Otsuka Pharmaceutical and OPDC conducted and announced the VISIONARY trial.
Applicable areaTreatment of IgA nephropathy in adults
Registration number and expiry dateNCT05248646 (VISIONARY trial registration number)
LocationOtsuka Pharmaceutical: Tokyo. OPDC: Princeton, New Jersey, U.S.
Quantitative EffectsAt 12 months, mean eGFR changed by +0.7 mL/min/1.73 m² in the sibeprenlimab group and −4.8 mL/min/1.73 m² in the placebo group, for a treatment difference of 5.5 mL/min/1.73 m². The treatment difference in eGFR slope was 4.6 mL/min/1.73 m² per year.
Usage historyThe VISIONARY trial included 320 participants: 152 in the sibeprenlimab group and 168 in the placebo group.
Impact on Business PerformanceThere is no change to the consolidated earnings forecast for the fiscal year ending December 2026.
SourcePresentation at the European Renal Association (ERA). The New England Journal of Medicine (2025, “Sibeprenlimab in IgA Nephropathy — Interim Analysis of a Phase 3 Trial”). KDIGO international guidelines.
Items this document does not state (7)
Contract ValueOffering priceContract DateLaunch dateAward/certification nameAwarding / certifying bodyLocation scale

These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.

The reasons the company gives

The company's own explanation, not something inferred from the numbers.

Selective APRIL inhibition may suppress the production of pathogenic IgA and slow the decline in renal function. The company explained that the results demonstrate a relationship between the clinical benefit of maintaining renal function and the drug's mechanism of action.

How to read this page

This is not the documentKomori reads the disclosure the company filed and writes this summary. Figures are as stated by the company and are not audited.
Weight is not a verdictIt measures how much this changes what the company had already told the market. It is not a view on the shares.
Corrections happenIf the company reissues this disclosure, the page is rebuilt from the corrected version and the revision number moves up.
Positive renal function (eGFR) data from the Phase 3 trial of VOYXACT (sibeprenlimab), a treatment for IgA nephropathy | Otsuka Holdings Co.,Ltd. (4578) timely disclosure | Komori