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Purple Book product · Reference 351(a)

Spevigo

spesolimab-sbzo

351(a)BLA 761244RxLicensed LEO Pharma A/S

May 28, 2025

Approved

Reference 351(a)

License type

Rx

Marketing

None

Listed patents

Spevigo (spesolimab-sbzo) is LEO Pharma A/S's FDA-licensed reference biologic, approved under a 351(a) BLA in 2025. No biosimilars referencing Spevigo are listed in the Purple Book yet.

Sourced from the FDA Purple Book · verified Jul 02, 2026

Key dates

  1. Approval

    Approval date of this BLA submission.

    May 28, 2025

    1 yr 2 mo ago

  2. Today

  3. Orphan exclusivity ends

    7-year orphan-drug exclusivity window.

    Mar 18, 2031

    in 4 yr 9 mo

Pharmaceutical detail

Strength

300MG/2ML (150MG/ML)

Dosage form

Injection

Route

Subcutaneous

Presentation

Pre-Filled Syringe

Center

CDER

License number

2169

Product number

003

Submission type

Supplement

Supplement number

4

Change type

Not listed

Reference product family

View full family

This is the reference (originator) product. No biosimilars or interchangeables reference it in the Purple Book yet.

2 additional BLA records for this product (other strengths or presentations) are in the same reference family.

Patent list

No patent-list records were published for this product. The Purple Book patent list reflects the statutory patent exchange under the BPCIA and is not exhaustive.

Source provenance

Source kind · Advanced Search
Checked Jul 02, 2026
  • advanced-searchAdvanced Search · Jul 02, 2026
  • monthly-downloadMonthly download · Jul 02, 2026

Change history

  • v3Jul 02, 2026
  • v2Jul 02, 2026

Frequently asked questions

Does Spevigo have approved biosimilars?

No 351(k) biosimilars or interchangeable biosimilars referencing Spevigo are listed in the FDA Purple Book yet.

What is Spevigo's BLA number?

Spevigo is licensed under BLA 761244, held by LEO Pharma A/S.

When was Spevigo approved by the FDA?

Spevigo was approved by the FDA on May 28, 2025.

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