A phase Ib study evaluating olaratumab in combination with nab-paclitaxel and gemcitabine in first-line treatment of metastatic pancreatic cancer.
2019
330Background: Increased platelet-derived growth factor receptor alpha (PDGFRα) expression is linked to epithelial-mesenchymal transition in pancreatic cancer. Olaratumab (O) is a fully human monoclonal antibody against PDGFRα previously approved for the treatment of advanced soft tissue sarcoma. Here, we report the initial safety and antitumor activity data of O in combination with nab-paclitaxel + gemcitabine (nPG) in first-line metastatic pancreatic cancer patients (pts). Methods: In this 3+3 dose escalation study, pts with stage IV pancreatic cancer received intravenous 15 mg/kg (cohort 1) or 20 mg/kg (cohort 2) O + nPG (125 mg/m2/1000 mg/m2) on D1, 8, and 15 of a 28-day cycle. Following dose escalation, additional pts were enrolled in an expansion phase to confirm safety. Primary objective was to determine a dose of O that can be safely combined with nPG. Results: As of September 2018, 10 pts were treated in dose escalation (cohort 1: 3 pts; cohort 2: 7 pts) with no dose-limiting toxicities (DLTs) ob...
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