Ramucirumab — Drug Monograph

Brand names: Cyramza

Drug class: Monoclonal Antibody

Mechanism of Action

Ramucirumab is a fully human IgG1 monoclonal antibody that specifically binds the extracellular domain of vascular endothelial growth factor receptor-2 (VEGFR-2) with high affinity, blocking binding of all VEGFR-2 ligands — VEGF-A, VEGF-C, and VEGF-D. By occupying the VEGF-binding domain of VEGFR-2, ramucirumab prevents receptor dimerization, autophosphorylation, and downstream activation of pro-angiogenic signaling cascades including the PI3K/AKT, MAPK/ERK, and PLC-γ pathways. The resultant inhibition of tumor neovascularization deprives tumors of oxygen and nutrients required for…

FDA Indications

Common Side Effects

Clinical Pearl

Ramucirumab is the only anti-VEGFR-2 antibody with regulatory approval across four distinct tumor types, underscoring the broad relevance of VEGF pathway signaling in solid tumors. In HCC, the REACH-2 trial identified AFP ≥400 ng/mL as a predictive biomarker for ramucirumab benefit, representing one of the first serum biomarker-selected approvals in hepatocellular carcinoma — patients below this threshold derived minimal OS benefit in exploratory analyses. Hypertension management is critical…

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