Pembrolizumab/berahyaluronidase alfa

Pembrolizumab/berahyaluronidase alfa
Combination of
PembrolizumabProgrammed death receptor-1 (PD-1) blocking antibody
Berahyaluronidase alfaVariant of hyaluronidase
Clinical data
Trade namesKeytruda Qlex
License data
Routes of
administration
Subcutaneous
ATC code
  • None
Legal status
Legal status
Identifiers
KEGG

Pembrolizumab/berahyaluronidase alfa, sold under the brand name Keytruda Qlex, is a fixed dose combination medication used for the treatment of many types of solid tumors.[1] It contains pembrolizumab, a programmed death receptor-1 (PD-1) blocking antibody; and berahyaluronidase alfa, a variant of hyaluronidase.[1] It is given by injection under the skin (subcutaneous).[1]

Pembrolizumab/berahyaluronidase alfa was approved for medical use in the United States in September 2025.[2][3]

Medical uses

Pembrolizumab/berahyaluronidase alfa is indicated for the solid tumor indications approved for the intravenous formulation of pembrolizumab.[1][2]

Side effects

The US FDA prescribing information includes warnings and precautions for immune-mediated adverse reactions, hypersensitivity and administration-related reactions, complications of allogeneic hematopoietic stem cell transplantation, and embryo-fetal toxicity.[2]

History

The efficacy was evaluated in study MK-3475A-D77 (NCT05722015), a randomized, multi-center, open-label, active-controlled trial conducted in participants with treatment-naïve metastatic non-small cell lung cancer, in whom there were no EGFR, ALK, or ROS1 genomic tumor aberrations.[2] A total of 377 participants were randomized (2:1) to receive either pembrolizumab/berahyaluronidase alfa administered subcutaneously every six weeks with platinum doublet chemotherapy or pembrolizumab administered intravenously every six weeks with platinum doublet chemotherapy.[2]

Society and culture

Pembrolizumab/berahyaluronidase alfa was approved for medical use in the United States in September 2025.[2]

Names

Pembrolizumab and berahyaluronidase alfa are international nonproprietary names.[4][5][6]

Pembrolizumab/berahyaluronidase alfa is sold under the brand name Keytruda Qlex.[1][2]

References

  1. ^ a b c d e f "Keytruda Qlex (pembrolizumab and berahyaluronidase alfa-pmph) injection, for subcutaneous use" (PDF). Archived from the original (PDF) on 21 September 2025.
  2. ^ a b c d e f g "FDA approves pembrolizumab and berahyaluronidase alfa-pmph for subcutaneous injection". U.S. Food and Drug Administration (FDA). 19 September 2025. Retrieved 21 September 2025. This article incorporates text from this source, which is in the public domain.
  3. ^ "FDA Approves Merck's Keytruda Qlex (pembrolizumab and berahyaluronidase alfa-pmph) Injection for Subcutaneous Use in Adults Across Most Solid Tumor Indications for Keytruda (pembrolizumab)". Merck (Press release). 21 September 2025. Retrieved 21 September 2025.
  4. ^ "Pembrolizumab". WHO/OMS. Retrieved 21 September 2025.
  5. ^ "International nonproprietary names for pharmaceutical substances (INN): recommended INN: list 90". WHO Drug Information. 37 (3). 2023. hdl:10665/373341.
  6. ^ "International nonproprietary names for pharmaceutical substances (INN): recommended INN: list 91". WHO Drug Information. 38 (1). 2024. hdl:10665/378096.
  • Clinical trial number NCT05722015 for "A Study of Subcutaneous (SC) Pembrolizumab Coformulated With Berahyaluronidase Alfa (MK-3475A) vs Intravenous Pembrolizumab in Adult Participants With Metastatic Non-small Cell Lung Cancer (NSCLC) (MK-3475A-D77)" at ClinicalTrials.gov