TheraRadar

Pharma Intelligence, Simplified

Data updated: Mar 10, 2026

LEQSELVI

DEURUXOLITINIB PHOSPHATE
Immunology Approved 2024-07-25
1
Indication
--
Phase 3 Trials
1
Years on Market

Details

Status
Prescription
First Approved
2024-07-25
Routes
ORAL
Dosage Forms
TABLET

Companies

Active Ingredient: DEURUXOLITINIB PHOSPHATE

LEQSELVI Approval History

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What LEQSELVI Treats

1 indications

LEQSELVI is approved for 1 conditions since its original approval in 2024. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Alopecia Areata
Source: FDA Label

LEQSELVI Boxed Warning

SERIOUS INFECTIONS, MORTALITY, MALIGNANCY, MAJOR ADVERSE CARDIOVASCULAR EVENTS, AND THROMBOSIS Increased risk of serious bacterial, fungal, viral and opportunistic infections, including tuberculosis (TB), that may lead to hospitalization or death. Interrupt treatment with LEQSELVI if a serious infection occurs until the infection is controlled. LEQSELVI treatment is not recommended in patients with active tuberculosis. Test for latent TB before and during therapy; treat latent TB prior to use. M...

LEQSELVI Target & Pathway

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Target

JAK1 (Janus Kinase 1) Intracellular Kinase

A member of the JAK family involved in signaling for interferons and several interleukins. JAK1 inhibition is effective in rheumatoid arthritis, atopic dermatitis, and other inflammatory conditions by blocking multiple cytokine pathways.

LEQSELVI Competitors

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10 other drugs also target JAK1. Compare mechanisms, indications, and trial activity.

View all 10 JAK1 drugs →
Drug = Competitor name Company = Manufacturer N indic. = FDA-approved indications → Date = Patent/exclusivity expiry

Competitors share the same molecular target (JAK1). 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.

LEQSELVI FDA Label Details

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Indications & Usage

FDA Label (PDF)

LEQSELVI™ is indicated for the treatment of adult patients with severe alopecia areata. Limitations of Use LEQSELVI is not recommended for use in combination with other JAK inhibitors, biologic immunomodulators, cyclosporine, or other potent immunosuppressants. LEQSELVI is a Janus kinase (JAK) inhibitor indicated for the treatment of adults with severe alopecia areata. Limitations of Use: LEQSELVI is not recommended for use in combination with other JAK inhibitors, biologic immunomodulators, cyclosporine or other potent immunosuppressants.

⚠️ BOXED WARNING

WARNING: SERIOUS INFECTIONS, MORTALITY, MALIGNANCY, MAJOR ADVERSE CARDIOVASCULAR EVENTS, AND THROMBOSIS Increased risk of serious bacterial, fungal, viral and opportunistic infections, including tuberculosis (TB), that may lead to hospitalization or death. Interrupt treatment with LEQSELVI if a seri...

LEQSELVI Patents & Exclusivity

Latest Patent: Oct 2044
Exclusivity: Jul 2029

Patents (6 active)

US12364699 Expires Oct 10, 2044
US12247034 Expires May 10, 2044
US12285432 Expires Aug 11, 2042
US11919907 Expires May 21, 2041
US10561659 Expires May 4, 2037
US12076323 Expires May 4, 2037

Exclusivity

NCE Until Jul 2029
Source: FDA Orange Book

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Data Sources

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