Overview
11 DESCRIPTION RYBREVANT FASPRO is a fixed-combination drug product containing amivantamab and hyaluronidase (human recombinant). Amivantamab is a low-fucose human immunoglobulin G1-based bispecific antibody directed against the EGF and MET receptors, produced by mammalian cell line (Chinese Hamster Ovary [CHO]) using recombinant DNA technology that has a molecular weight of approximately 148 kDa.
Mechanism of Action
12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action Amivantamab is a bispecific antibody that binds to the extracellular domains of EGFR and MET. In in vitro and in vivo studies, amivantamab was able to disrupt EGFR and MET signaling functions through blocking ligand binding and, in exon 19 deletions, exon 21 L858R substitutions, and exon 20 insertion mutation models, degradation of EGFR and MET. The presence of EGFR and MET on the surface of tumor cells also allows for targeting of these cells for destruction by immune effector cells, such as natural killer cells and macrophages, through antibody-dependent cellular cytotoxicity (ADCC) and trogocytosis mechanisms, respectively. Hyaluronan is a polysaccharide found in the extracellular matrix of the subcutaneous tissue.
Indications
- 1 INDICATIONS AND USAGE RYBREVANT FASPRO is a combination of amivantamab, a bispecific EGF receptor-directed and MET receptor-directed antibody, and hyaluronidase, an endoglycosidase indicated: in combination with lazertinib for the first-line treatment of adult patients with locally advanced or metastatic NSCLC with EGFR exon 19 deletions or exon 21 L858R substitution mutations, as detected by an FDA-approved test. ( 1 , 2.
Common Doses
- 600 mg
- 400 mg
- 240 mg
- 360 mg
Dosage
2 DOSAGE AND ADMINISTRATION For subcutaneous use only. (2.1) RYBREVANT FASPRO has different recommended dosage and administration than intravenous amivantamab products. ( 2.1 ) Administer each injection of RYBREVANT FASPRO subcutaneously in the abdomen over approximately 5 minutes. ( 2.1 ) The recommended dosage of RYBREVANT FASPRO is based on baseline body weight. ( 2.3 ) Administer premedications as recommended. ( 2.4 ) Recommended dosage for RYBREVANT FASPRO in combination with carboplatin and pemetrexed (every 3-week dosing), see Table 2 . ( 2.
Contraindications
- 4 CONTRAINDICATIONS RYBREVANT FASPRO is contraindicated in patients with known hypersensitivity to hyaluronidase or to any of its excipients. Patients with known hypersensitivity to hyaluronidase or to any of its excipients. ( 4 )
Side Effects
- 6 ADVERSE REACTIONS The following adverse reactions are discussed elsewhere in the labeling: Hypersensitivity and Administration-Related Reactions [see Warnings and Precautions (5.1) ] Interstitial Lung Disease/Pneumonitis [see Warnings and Precautions (5.2) ] Venous Thromboembolic Events with Concomitant Use with Lazertinib [see Warnings and Precautions (5.3) ] Dermatologic Adverse Reactions [see Warnings and Precautions (5.4) ] Ocular Toxicity [see Warnings and Precautions (5.
Interactions
- No major interactions listed on the FDA label. Always consult a healthcare professional.