ELREXFIO Solution for injection Ref.[107409] Active ingredients: Elranatamab

Elranatamab-bcmm is a bispecific B-cell maturation antigen (BCMA)-directed CD3 T-cell engager. It is a bispecific, humanized immunoglobulin 2-alanine (IgG2Δa) kappa antibody derived from two monoclonal antibodies (mAbs), an anti-BCMA mAb and an anti-CD3 mAb. Each of these mAbs contributes one distinct heavy (H) chain and one distinct light (L) chain to the bispecific elranatamab-bcmm. The resulting 4-chain bispecific antibody is covalently linked via five inter-chain disulfide bonds. Elranatamab-bcmm is produced using two recombinant Chinese hamster ovary (CHO) cell lines, one that contains the DNA encoding the sequence for anti-BCMA monoclonal antibody (mAb) and one that contains the sequence for anti-CD3 mAb, which are grown separately in suspension culture using chemically-defined (CD), animal-derived component-free (ACF) media. The molecular weight of elranatamab-bcmm is approximately 148.5 kDa.

ELREXFIO (elranatamab-bcmm) injection is a sterile, preservative-free, clear to slightly opalescent, and colorless to pale brown liquid solution for subcutaneous administration. ELREXFIO (elranatamab-bcmm) is supplied at a concentration of 40 mg/mL in either 76 mg/1.9 mL or 44 mg/1.1 mL single-dose vials. Each mL of solution contains 40 mg elranatamab-bcmm, edetate disodium (0.045 mg), histidine (1.12 mg), L-histidine hydrochloride monohydrate (2.67 mg), polysorbate 80 (0.2 mg), sucrose (85 mg) and Water for Injection. The pH is 5.8.