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Drug Safety-related Labeling Changes (SrLC)

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BKEMV (BLA-761333)

(ECULIZUMAB-AEEB)

Safety-related Labeling Changes Approved by FDA Center for Drug Evaluation and Research (CDER)

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11/24/2025 (SUPPL-5)

Approved Drug Label (PDF)

7 Drug Interactions

7.1 Plasmaphresis, Plasma Exchange, Fresh Frozen Plasma Infusion, or IVIg

Subsection title revised

Additions and/or revisions underlined:

Concomitant use of eculizumab products with plasma exchange (PE), plasmapheresis (PP), fresh frozen plasma infusion (PE/PI), or in patients with gMG on concomitant IVIg treatment can reduce serum eculizumab product concentrations and requires a supplemental dose of BKEMV [see Dosage and Administration (2.5)].

10/23/2024 (SUPPL-1)

Approved Drug Label (PDF)

6 Adverse Reactions

6.1 Clinical Trials Experience

Extensive changes; please refer to label for complete information

6.2 Postmarketing Experience

Additions and/or revisions underlined:

The following adverse reactions have been identified during post-approval use of eculizumab products. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to eculizumab products exposure.

Adverse Reactions from Postmarketing Spontaneous Reports

  • Fatal or serious infections: Neisseria gonorrhoeae, Neisseria meningitidis, Neisseria sicca/subflava, Neisseria spp unspecified.

  • Cases of cholestatic or mixed pattern liver injury with increased serum liver enzymes and bilirubin levels have been reported in adult and pediatric patients with aHUS who were treated with eculizumab. These events occurred within 3 to 27 days after starting treatment. The median time to resolution (or return to baseline) was approximately 3 weeks.

7 Drug Interactions

7.1 Plasmapheresis, Plasma Exchange, or Fresh Frozen Plasma Infusion

Newly added subsection:

Concomitant use of eculizumab products with plasma exchange (PE), plasmapheresis (PP) or fresh frozen plasma infusion (PE/PI) treatment can reduce serum eculizumab products concentrations and requires a supplement dose of BKEMV [see Dosage and Administration (2.5)].

7.2 Neonatal Fc Receptor Blockers

Newly added subsection:

Concomitant use of eculizumab products with neonatal Fc receptor (FcRn) blockers may lower systemic exposures and reduce effectiveness of eculizumab products. Closely monitor for reduced effectiveness of BKEMV.

17 PCI/PI/MG (Patient Counseling Information/Patient Information/Medication Guide)

MEDICATION GUIDE

Additions and/or revisions underlined:

…

What is BKEMV?

BKEMV is a prescription medicine used to treat:

  • people with paroxysmal nocturnal hemoglobinuria (PNH).

  • people with atypical hemolytic uremic syndrome (aHUS).

    BKEMV is not for use in treating people with Shiga toxin E. coli related hemolytic uremic syndrome (STEC-HUS).

  • adults with generalized myasthenia gravis (gMG) who are anti-acetylcholine receptor (AchR) antibody positive.

It is not known if BKEMV is safe and effective in children with PNH, or gMG.

…

What are the possible side effects of BKEMV?

…

The most common side effects in people with gMG treated with BKEMV include:

  • muscle and joint (musculoskeletal) pain

…