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FDA Approves Ramucirumab for Metastatic Colorectal Cancer

Recommended for use in combination with FOLFIRI
27 Apr 2015
Gastrointestinal cancers;  Anticancer agents & Biologic therapy

On 24 April, 2015, the US Food and Drug Administration (FDA) approved ramucirumab (CYRAMZA®, Eli Lilly and Company) for use in combination with FOLFIRI for the treatment of patients with metastatic colorectal cancer (mCRC) whose disease has progressed on a first-line bevacizumab-, oxaliplatin- and fluoropyrimidine-containing regimen.

Ramucirumab is a recombinant human monoclonal IgG1 antibody that binds to the human vascular endothelial growth factor-receptor 2 (VEGF-R2), preventing the interaction of VEGF-R2 to its ligands.

This approval is based on the results of RAISE, a randomised, double-blind, multinational trial enrolling patients with mCRC that progressed during or within 6 months of discontinuation of bevacizumab-, oxaliplatin- and fluoropyrimidine-based combination chemotherapy.

The clinical trial accrued 1072 patients who were randomly allocated (1:1) to receive FOLFIRI plus placebo or FOLFIRI plus ramucirumab (536 patients per arm). Treatment cycles on both arms were repeated every 2 weeks and ramucirumab was administered at a dose of 8 mg/kg by intravenous infusion every two weeks. Ramucirumab was continued until disease progression or unacceptable toxicity.

The primary efficacy endpoint was overall survival (OS). Treatment assignment was stratified by geographic region (North America vs. Europe vs. other regions), KRAS status (wild-type vs. mutant) and time to progression for the beginning of first-line treatment (< 6 months vs. greater than or equal to 6 months).

The median age of the study population was 62 years, 57% were men, and 99% had an ECOG performance status of 0 or 1. A statistically significant OS improvement was observed in patients receiving FOLFIRI plus ramucirumab compared to those receiving FOLFIRI plus placebo (HR 0.85, p=0.023, stratified log-rank test). Median OS was 13.3 and 11.7 months for patients on the FOLFIRI plus ramucirumab and FOLFIRI plus placebo arms, respectively. Progression-free survival (PFS) was also significantly improved in patients who received ramucirumab in combination with FOLFIRI (HR 0.79, p<0.001). Median PFS was 5.7 and 4.5 months, respectively.

In general, the safety data was consistent with the known safety profile established in previously approved indications. However, hypothyroidism was reported in 2.6% of patients based on thyroid monitoring in patients with mCRC.

The recommended dose and schedule in patients receiving ramucirumab in combination with FOLFIRI after progression on a first-line bevacizumab containing regimen is 8 mg/kg administered every 2 weeks as a 60-minute i.v. infusion.

Healthcare professionals should report all serious adverse events suspected to be associated with the use of any medicine and device to FDA’s MedWatch Reporting System.

Last update: 27 Apr 2015

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