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FDA approves ILUMYA for psoriatic arthritis, adding an in-office IL-23 option

FDA approves ILUMYA for psoriatic arthritis, adding an in-office IL-23 option

New Capabilities

Sun Pharma's tildrakizumab, a plaque psoriasis drug since 2018, becomes the third IL-23 inhibitor cleared for joint disease.

3 days ago: FDA approves ILUMYA for active psoriatic arthritis

Overview

Updated 52 minutes ago

On October 30, 2026, the Food and Drug Administration approved ILUMYA for adults with active psoriatic arthritis. The drug, tildrakizumab, had been cleared since 2018 only for plaque psoriasis, a skin condition.

About 2.4 million Americans have psoriatic arthritis, which causes joint pain, swelling and stiffness and can permanently damage joints. ILUMYA is the third IL-23 inhibitor approved for the disease, after Tremfya in 2020 and Skyrizi in 2022. Sun Pharma says it is the only one given exclusively by a healthcare provider rather than self-injected at home.

In two phase 3 trials covering 806 adults, 38.8% of patients on tildrakizumab met the ACR20 response threshold at week 24, against 24.4% on placebo. The ACR20 difference was statistically significant in both trials. The difference in physical function, measured by the HAQ Disability Index, was not.

Tildrakizumab is a monoclonal antibody that binds the p19 subunit of interleukin-23, a cytokine involved in inflammatory and immune responses. Blocking it reduces the release of proinflammatory cytokines and chemokines.

Why it matters

Adults with psoriatic arthritis who cannot self-inject now have an IL-23 option a clinician can give in the office.

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Key Indicators

2.4 million
Americans living with psoriatic arthritis
Company estimate cited in the approval announcement.
806
Adults enrolled in the two phase 3 trials
Trial PsA2 and Trial PsA3 combined.
38.8%
ACR20 response at week 24, pooled tildrakizumab arms
Pooled INSPIRE-1 and INSPIRE-2 results reported in an ACR abstract.
24.4%
ACR20 response at week 24, pooled placebo arms
Same pooled analysis.
14.4
Percentage-point gap in ACR20 response
Pooled difference between tildrakizumab and placebo.
100 mg
Recommended PsA dose for patients without coexistent plaque psoriasis
Given every 12 weeks; patients with both conditions also get a week 4 dose.

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People Involved

RA
Rick Ascroft
North America CEO, Sun Pharma
Leads US commercial launch of ILUMYA for psoriatic arthritis
 Philip J. Mease
Philip J. Mease
Director of Rheumatology Research, Swedish Medical Center and Providence St Joseph Health; clinical professor, University of Washington School of Medicine
Commenting clinician on the approval

Organizations Involved

Sun Pharmaceutical Industries
Sun Pharmaceutical Industries
Pharmaceutical Company
Markets ILUMYA in the United States

Mumbai-based drugmaker that sells ILUMYA, its IL-23 inhibitor, in the US market.
U.S. Food and Drug Administration
U.S. Food and Drug Administration
Federal regulator
Approved the supplemental biologics license application

Federal agency that approved the expanded ILUMYA label on October 30, 2026.

Timeline

2018 November 2026

6 events Latest: 3 days ago
Tap a bar to jump to that date

  1. Pooled INSPIRE data scheduled for ACR poster

    Upcoming Conference

    An abstract pooling the two phase 3 trials is set for a poster session at ACR Convergence 2026.

  2. FDA approves ILUMYA for active psoriatic arthritis

    Latest Regulatory

    The supplemental approval covers adults with active psoriatic arthritis, expanding a label limited to plaque psoriasis since 2018.

  3. FDA accepts ILUMYA application for psoriatic arthritis

    Regulatory

    The agency took in Sun Pharma's supplemental biologics license application, with a target action date of October 29, 2026.

  4. Skyrizi follows for psoriatic arthritis

    Regulatory

    AbbVie's risankizumab became the second IL-23 inhibitor approved for the disease.

  5. Tremfya becomes first IL-23 approved for psoriatic arthritis

    Regulatory

    Johnson & Johnson's guselkumab crossed over from plaque psoriasis into joint disease, opening the class beyond skin.

  6. ILUMYA cleared for plaque psoriasis

    Regulatory

    The FDA approved tildrakizumab for adults with moderate-to-severe plaque psoriasis who are candidates for systemic therapy or phototherapy.

Scenarios

1

ILUMYA builds an in-office niche in psoriatic arthritis

Possible Resolves by Q3 2027

Discussed by: Sun Pharma executives and dermatology trade coverage

Sun Pharma's pitch is that some patients need or prefer a clinician to give the injection. If that segment is real, ILUMYA prescriptions should grow without taking much share from self-injected IL-23s. The test is whether the company's own filings attribute revenue growth to the psoriatic arthritis launch.

2

Payers put a TNF-failure step in front of ILUMYA

Possible Resolves by Q2 2027

Discussed by: Payer formulary analysts and rheumatology practice groups

Psoriatic arthritis formularies often require patients to try a TNF inhibitor first. If the largest pharmacy benefit managers apply that rule to ILUMYA, the in-office advantage shrinks to patients who have already failed older biologics.

3

A new safety warning lands on the ILUMYA label

Unlikely Resolves by Oct 30, 2027

Discussed by: FDA labeling and rheumatology safety reviewers

The trials found no new safety signals, and the most common psoriatic arthritis adverse reactions were upper respiratory infections and COVID-19. A boxed warning or new contraindication would change the risk-benefit calculation for a drug given in clinics.

Historical Context

3 moments from history that rhyme with this story — and how they unfolded.

2020

Tremfya becomes the first IL-23 approved for psoriatic arthritis (2020)

Johnson & Johnson's guselkumab, sold as Tremfya, was already approved for plaque psoriasis. In 2020 it became the first IL-23 inhibitor cleared for psoriatic arthritis, taking the class beyond skin disease.

Then

Dermatologists and rheumatologists gained an IL-23 option for joint symptoms.

Now

It set the template ILUMYA now follows: a psoriasis drug expanding into psoriatic arthritis.

Why this matters now

ILUMYA is arriving six years later into a category Tremfya created.

2022

Skyrizi follows for psoriatic arthritis (2022)

AbbVie's risankizumab, sold as Skyrizi, became the second IL-23 inhibitor approved for psoriatic arthritis. It joined TNF inhibitors and IL-17 inhibitors in the treatment mix.

Then

The IL-23 class became a standard alternative rather than a single-product curiosity.

Now

Two established competitors now define the category ILUMYA is entering.

Why this matters now

ILUMYA needs a differentiator against two entrenched IL-23 rivals. Sun Pharma's is provider administration.

2018

ILUMYA approved for plaque psoriasis (2018)

The FDA cleared tildrakizumab for adults with moderate-to-severe plaque psoriasis who are candidates for systemic therapy or phototherapy. For eight years, the US label covered only that skin condition.

Then

Sun Pharma got a foothold in psoriasis biologics.

Now

The drug's US label stayed limited to skin disease until the 2026 joint approval.

Why this matters now

The psoriatic arthritis approval is the first expansion of the US label beyond plaque psoriasis.

Sources

(8)
+2
PR Newswire U.S. Food and Drug Administration BSE India Sun Pharma Medical Daily Edit USA BioPharm International Fierce Pharma