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Purple Book product · Reference 351(a)

Imdelltra

tarlatamab-dlle

351(a)BLA 761344RxLicensed Amgen Inc.

May 16, 2024

Approved

Reference 351(a)

License type

Rx

Marketing

None

Listed patents

Imdelltra (tarlatamab-dlle) is Amgen Inc.'s FDA-licensed reference biologic, approved under a 351(a) BLA in 2024. No biosimilars referencing Imdelltra 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 16, 2024

    2 yr 2 mo ago

  2. Today

  3. Orphan exclusivity ends

    7-year orphan-drug exclusivity window.

    May 16, 2031

    in 4 yr 11 mo

Pharmaceutical detail

Strength

10MG

Dosage form

Injection

Route

Intravenous

Presentation

Single-Dose Vial

Center

CDER

License number

1080

Product number

002

Submission type

Original

Supplement number

Not listed

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.

1 additional BLA record 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

  • v4Jul 02, 2026
  • v3Jul 02, 2026
  • v2Jul 02, 2026

Frequently asked questions

Does Imdelltra have approved biosimilars?

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

What is Imdelltra's BLA number?

Imdelltra is licensed under BLA 761344, held by Amgen Inc..

When was Imdelltra approved by the FDA?

Imdelltra was approved by the FDA on May 16, 2024.

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