Sun Pharma Secures FDA Acceptance for Ilumya Psoriatic Arthritis Treatment
Sun Pharmaceutical Industries has secured FDA acceptance for its supplemental biologics license application to expand Ilumya (tildrakizumab-asnm) treatment to adults with active psoriatic arthritis. The application is based on Phase 3 clinical studies and could position Ilumya as the only HCP-administered IL-23 biologic for this condition affecting 2.4 million Americans.

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Sun Pharmaceutical Industries has achieved a significant regulatory milestone with the US Food and Drug Administration's acceptance of its supplemental biologics license application for Ilumya® (tildrakizumab-asnm). The FDA has accepted the sBLA for review to expand the therapeutic scope of this biologic therapy to include treatment of adults diagnosed with active psoriatic arthritis, with a regulatory action date expected by October 29, 2026.
Regulatory Application Details
The FDA acceptance marks an important step in the regulatory process for expanding Ilumya's approved indications. This sBLA specifically covers the treatment of adults with active psoriatic arthritis, building on the established clinical experience of Ilumya as an IL-23 inhibitor for moderate-to-severe plaque psoriasis.
| Parameter: | Details |
|---|---|
| Drug Name: | Ilumya® (tildrakizumab-asnm) |
| Application Type: | Supplemental Biologics License Application (sBLA) |
| New Indication: | Active psoriatic arthritis in adults |
| Regulatory Authority: | US FDA |
| Status: | Accepted for Review |
| Expected Decision Date: | October 29, 2026 |
Clinical Trial Foundation
The sBLA submission is based on results from the INSPIRE-1 and INSPIRE-2 Phase 3 clinical studies evaluating the efficacy and safety of Ilumya in adult patients with active psoriatic arthritis. Both studies are 52-week global, multicenter, randomized, double-blind, placebo-controlled Phase 3 trials assessing tildrakizumab 100 mg in this patient population. Top-line findings from these studies were reported in July 2025.
Market Position and Patient Impact
If approved, this would represent a significant expansion for Ilumya, which received its original US FDA approval in 2018 for moderate-to-severe plaque psoriasis. The drug has since received additional approvals for scalp and nail plaque psoriasis in April 2024 and December 2025, respectively. Ilumya has supported nearly 140,000 patients worldwide and has received marketing authorization from over 55 worldwide health authorities.
| Milestone: | Timeline |
|---|---|
| Original FDA Approval: | 2018 (moderate-to-severe plaque psoriasis) |
| Scalp Psoriasis Approval: | April 2024 |
| Nail Psoriasis Approval: | December 2025 |
| Global Patients Supported: | Nearly 140,000 |
| Worldwide Authorizations: | Over 55 health authorities |
Therapeutic Significance
Psoriatic arthritis affects roughly 1 in 3 people living with psoriasis, with as many as 2.4 million Americans living with the condition. The potential approval would position Ilumya as the only HCP-administered IL-23 biologic for active psoriatic arthritis treatment. Rick Ascroft, CEO of Sun Pharma North America, emphasized the company's ambition for Ilumya to become a differentiated first-choice advanced systemic treatment for this condition.
Historical Stock Returns for Sun Pharmaceutical
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