The pharmacokinetic results of this phase Ib study of ramucirumab combined with paclitaxel as second-line therapy in Japanese patients with metastatic gastric or gastro-esophageal junction adenocarcinoma are in line with previous ramucirumab studies.This combination at the doses and schedule given did not result in any dose-limiting toxicities and appeared to be safe and well tolerated.
This phase Ib study evaluated the tolerability and pharmacokinetics of ramucirumab, an anti-VEGFR-2 antibody, combined with paclitaxel as second-line therapy in Japanese patients with metastatic gastric or gastroesophageal junction adenocarcinoma after first-line therapy with fluoropyrimidines and/or platinum.
Patients received ramucirumab 8 mg/kg on days 1 and 15 and paclitaxel 80 mg/m(2) on days 1, 8, and 15 of a 28-day cycle. Safety analyses included all patients (n = 6).
No dose-limiting toxicities occurred in the first cycle. All patients experienced ≥1 treatment-emergent adverse event (TEAE); 5 patients experienced grade ≥3 TEAEs. There were two deaths caused by disease progression. The best overall responses were stable disease (n = 5) and partial response (n = 1). Patients received ramucirumab and paclitaxel for a median of 12.5 weeks (range: 11.4-42.7 weeks) and 12.2 weeks (range: 11.0-41.0 weeks), respectively. Following a single dose of ramucirumab IV infusion 8 mg/kg, clearance was ∼0.017 L/hour, half-life (t1/2) was 138 to 225 hours, and steady-state volume of distribution (Vss) was ∼3 L.
The ramucirumab/paclitaxel combination appears to be well-tolerated in Japanese patients with advanced gastric adenocarcinomas. These results are in line with previous ramucirumab pharmacokinetic studies as anticipated.
©AlphaMed Press; the data published online to support this summary is the property of the authors.

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