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
- Advanced gastric or gastro-esophageal junction (GEJ) adenocarcinoma after prior fluoropyrimidine- or platinum-containing chemotherapy — approved April 2014 as monotherapy (REGARD trial)
- Advanced gastric or GEJ adenocarcinoma in combination with paclitaxel after prior fluoropyrimidine- or platinum-containing chemotherapy — approved November 2014 (RAINBOW trial)
- Metastatic non-small cell lung cancer (NSCLC) with disease progression on or after platinum-based chemotherapy, in combination with docetaxel — approved December 2014 (REVEL trial)
- Metastatic colorectal cancer (mCRC) with disease progression on or after bevacizumab, oxaliplatin, and fluoropyrimidine-based chemotherapy, in combination with FOLFIRI — approved April 2015 (RAISE trial)
- Hepatocellular carcinoma (HCC) after sorafenib in patients with AFP ≥400 ng/mL — approved May 2019 (REACH-2 trial)
Common Side Effects
- Hypertension (16-26%)
- Proteinuria (17-19%)
- Headache (9-15%)
- Diarrhea (14%)
- Fatigue (35-57%; when combined with chemotherapy)
- Peripheral edema (20%)
- Epistaxis (nosebleed) (10-31%)
- Neutropenia (when combined with chemotherapy)
- Hypoalbuminemia (11%)
- Stomatitis (20% with FOLFIRI)
- Alopecia (with chemotherapy combination)
- Infusion-related reactions (9-16%)
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…
Related Therapies & Mechanisms
- Bevacizumab (Avastin) — Monoclonal Antibody · HCC
- Nivolumab (Opdivo) — HCC
- Pembrolizumab (Keytruda) — HCC
- Regorafenib (Stivarga) — HCC