berahyaluronidase alfa - Medications

KEYTRUDA QLEX is a fixed-combination drug product containing pembrolizumab and berahyaluronidase alfa. Pembrolizumab is a programmed death receptor-1 (PD 1)-blocking antibody. Pembrolizumab is a humanized monoclonal IgG4 kappa antibody with an approximate molecular weight of 149 kDa. Pembrolizumab is produced in recombinant Chinese hamster ovary (CHO) cells. Berahyaluronidase alfa is an endoglycosidase used to enhance dispersion and permeation, which facilitates delivery of increased volume of pembrolizumab that is co-administered subcutaneously. It is produced by mammalian CHO (Chinese Hamster Ovary) cells containing a DNA plasmid encoding a variant of human hyaluronidase PH20. It is a glycosylated protein with an approximate molecular weight of 49 kDa under nonreducing, deglycosylated conditions. KEYTRUDA QLEX (pembrolizumab and berahyaluronidase alfa-pmph) injection is a sterile, preservative-free, clear to slightly opalescent, colorless to slightly yellow solution supplied in single-dose vials for subcutaneous administration. KEYTRUDA QLEX is supplied as two different configurations: Each KEYTRUDA QLEX 2.4 mL single-dose vial contains 395 mg of pembrolizumab and 4,800 units of berahyaluronidase alfa, and histidine (0.7 mg), histidine hydrochloride monohydrate (4.1 mg), methionine (3.6 mg), polysorbate 80 (0.5 mg), sucrose (168 mg), and Water for Injection, USP. The pH is 5.3-5.9. Each KEYTRUDA QLEX 4.8 mL single-dose vial contains 790 mg of pembrolizumab and 9,600 units of berahyaluronidase alfa, and histidine (1.4 mg), histidine hydrochloride monohydrate (8.2 mg), methionine (7.2 mg), polysorbate 80 (1 mg), sucrose (336 mg), and Water for Injection, USP. The pH is 5.3-5.9.