Assyro AI

Purple Book product · Reference 351(a)

Prehevbrio

Hepatitis B Vaccine (Recombinant)

351(a)BLA 125737DiscLicensed VBI Vaccines (Delaware), Inc.

At a glance

Nov 30, 2021

Approved

Reference 351(a)

License type

Disc

Marketing

No

Patents listed

Key dates

  1. First licensure

    Date the BLA was first licensed.

    Nov 30, 2021

    4 yr 7 mo ago

  2. Approval

    Approval date of this BLA submission.

    Nov 30, 2021

    4 yr 7 mo ago

  3. Today

  4. Reference product exclusivity ends

    12-year reference-product exclusivity window per BPCIA §351(k)(7).

    Nov 30, 2033

    in 7 yr 7 mo

Pharmaceutical detail

Strength

10UG/ML

Dosage form

For Injection

Route

Intramuscular

Presentation

Single-Dose Vial

Center

CBER

License number

2219

Product number

001

Submission type

Original

Supplement number

0

Change type

Not listed

Reference product family

View full family

This is the reference (originator) product. Biosimilars and interchangeables referencing it are listed below.

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.

Taxonomy and ontology

12 terms

center

Center for Biologics Evaluation and Research

center · CBER

application pathway

Biologics License Application

blaNumber · BLA

license type

351(a)

blaType · 351(a)

application pathway

Section 351(a) Biologic

blaType · 351(a)

product role

Reference or Standalone Biologic

blaType · Reference product

marketing status

Discontinued

marketingStatus · Disc

licensure status

Licensed

licensure · Licensed

route

Intramuscular

routeOfAdministration · Intramuscular

dosage form

For Injection

dosageForm · For Injection

source kind

Monthly Download

sourceKind · monthly_download

  • Food and Drug Administrationparent ofCenter for Biologics Evaluation and Research
  • Food and Drug Administrationsource forMonthly Download
  • Biologics License Applicationparent ofSection 351(a) Biologic
  • Biologics License Applicationparent ofSection 351(k) Biosimilar or Interchangeable
  • Section 351(a) Biologicmaps to351(a)
  • 351(a)classifiesReference or Standalone Biologic

Source provenance

Source kind · Monthly download
Checked May 28, 2026
FDA release · April 2026
Agent CTA Background

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