Background: Pancreatic ductal adenocarcinoma (PDAC) is characterized by dense stroma and connective tissue growth factor (CTGF) overexpression. Although prolonged overall survival (OS) can be achieved through resection, only approximately 15% to 20% of patients are treated with surgery. Previously, pamrevlumab (P), a fully human monoclonal antibody blocking CTGF, was combined with gemcitabine/erlotinib (G/E) in a study of advanced PDAC. P plasma levels of > 150 µg/mL and low baseline CTGF levels resulted in prolonged OS. We hypothesize that neoadjuvant (NA) treatment of LAPC with P + G/nab-paclitaxel (NP) may alter LAPC’s stroma, increase R0 resectability, and improve OS similar to that of patients resectable at presentation. Methods: LAPC subjects, confirmed by NCCN criteria and staging laparoscopy, were randomized 2:1 to G/NP ± P for 6-cycle/24-week treatment. Safety and efficacy (resection rate, OS, progression-free survival, tumor response) were assessed. Resection was performed in subjects who met protocol-defined criteria with no contraindications. Results: As of 26 Sep 2016, 25 subjects were enrolled. Of 14 subjects in Arm A (G/NP + P), 7 completed, 2 discontinued. Of 11 subjects in Arm B (G/NP), 4 completed, 4 discontinued. 6 subjects (43%) in Arm A and 4 (36%) in Arm B experienced SAEs; no P-related SAEs were reported. Out of 7 eligible Arm A subjects, 3 were not resected. Successful resection was achieved in 4 Arm A subjects (3 R0, 1 R1) and 1 Arm B subject (R0) (Table). Conclusions: The combination of G/NP + P is feasible and well-tolerated with no incremental safety signals in this study. The addition of P suggests a trend toward increased resectability among LAPC subjects. Clinical trial information
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