TheraRadar

Pharma Intelligence, Simplified

Data updated: Mar 10, 2026

VOYXACT

SIBEPRENLIMAB-SZSI
Approved 2025-11-25

VOYXACT (sibeprenlimab-szsi) is indicated for the reduction of proteinuria in adults with primary immunoglobulin A nephropathy (IgAN) who are at risk for disease progression. This indication received accelerated approval based on the drug's ability to reduce proteinuria, though its impact on long-term kidney function decline has not yet been established. Continued approval for this use may be contingent upon the verification of clinical benefit in confirmatory clinical trials.

Source: FDA Label • OTSUKA PHARM CO LTD

How VOYXACT Works

VOYXACT is an antibody that binds to A Proliferation Inducing Ligand (APRIL), which blocks signaling at the B cell maturation antigen (BCMA) and TACI receptors. By inhibiting APRIL, the drug reduces serum levels of galactose-deficient immunoglobulin A1 (Gd-IgA1). This reduction is therapeutically relevant because Gd-IgA1 is a protein implicated in the pathogenesis of IgAN.

Source: FDA Label
1
Indication
--
Phase 3 Trials
1
Priority Reviews
0
Years on Market

Details

Status
Prescription
First Approved
2025-11-25
Routes
INJECTION
Dosage Forms
INJECTABLE

Companies

Active Ingredient: SIBEPRENLIMAB-SZSI

VOYXACT Approval History

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What VOYXACT Treats

1 indications

VOYXACT is approved for 1 conditions since its original approval in 2025. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Immunoglobulin A Nephropathy
Source: FDA Label

VOYXACT Target & Pathway

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Target

BCMA (B-Cell Maturation Antigen) Cell Surface Marker

A protein highly expressed on malignant plasma cells in multiple myeloma. BCMA-targeted therapies, including CAR-T cells and bispecific antibodies, can eliminate myeloma cells while sparing most normal immune cells.

VOYXACT Competitors

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4 other drugs also target BCMA. Compare mechanisms, indications, and trial activity.

Drug = Competitor name Company = Manufacturer N indic. = FDA-approved indications → Date = Patent/exclusivity expiry

Competitors share the same molecular target (BCMA). Earlier expiry dates signal biosimilar/generic opportunities.

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Active Pipeline

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Ongoing clinical trials by development phase

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Key Completed Trials

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Completed studies with published results, ranked by significance

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

VOYXACT FDA Label Details

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Indications & Usage

FDA Label (PDF)

VOYXACT is indicated to reduce proteinuria in adults with primary immunoglobulin A nephropathy (IgAN) at risk for disease progression. This indication is approved under accelerated approval based on reduction of proteinuria. It has not been established whether VOYXACT slows kidney function decline over the long-term in patients with IgAN. Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory clinical trial. VOYXACT is an A Proliferation Inducing Ligand (APRIL) blocker, indicated to reduce proteinuria in adults with prim...

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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.