alexa FG-3019, A Human Monoclonal Antibody to Connective Tissue Growth Factor, Combined with Chemotherapy in Patients with Locally Advanced or Metastatic Pancreatic Ductal Adenocarcinoma

Journal of Cancer Clinical Trials
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Research Article

FG-3019, A Human Monoclonal Antibody to Connective Tissue Growth Factor, Combined with Chemotherapy in Patients with Locally Advanced or Metastatic Pancreatic Ductal Adenocarcinoma

Vincent J Picozzi1*, J. Marc Pipas2, Albert C Koong3, Amato J Giaccia3, Nathan Bahary4, Smitha S Krishnamurthi5, Charles D Lopez6, Peter O’Dwyer7, Katharina Modelska9, Mairead Carney8, James Chou8, Ming Zhong8, Stefan Hemmerich8, Dongxia Li8, Ewa Carrier8, Seth Porter8, Thomas B Neff8 and Frank H Valone8

1Virginia Mason Medical Center, Seattle, WA 98101, USA

2Merrimack Pharmaceuticals, Cambridge, MA 02139, USA

3Stanford University School of Medicine, Stanford, CA 4305, USA

4University of Pittsburgh Cancer Institute, Pittsburgh, PA 15232, USA

5University Hospitals Seidman Cancer Center, Cleveland, OH 44106, USA

6Oregon Health & Science University, Portland, OR 97239, USA

7Hospital of the University of Pennsylvania, Philadelphia, PA 19104, USA

8FibroGen, Inc., San Francisco, CA 94158, USA

9Medivation Inc, San Francisco, DA 94105, USA

*Corresponding Author:
Vincent J Picozzi
Virginia Mason Medical Center, Seattle, WA 98101, USA
Tel: 206-223-6193
E-mail: [email protected]

Received date: November 01, 2016; Accepted date: December 08, 2016; Published date: December 14, 2016

Citation: Picozzi VJ, Pipas JM, Koong AC, Giaccia AJ, Bahary N, et al. (2017) FG-3019, A Human Monoclonal Antibody to Connective Tissue Growth Factor, Combined with Chemotherapy in Patients with Locally Advanced or Metastatic Pancreatic Ductal Adenocarcinoma. J Cancer Clin Trials 2:123.

Copyright: © 2016 Picozzi VJ, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Purpose: Connective tissue growth factor (CTGF) is overexpressed in pancreatic ductal adenocarcinoma (PDAC) and facilitates local desmoplasia, tumor progression and metastasis in animal models. This study evaluated safety and initial efficacy of the anti-CTGF antibody FG-3019 in combination with gemcitabine and erlotinib in patients with previously untreated Stage III or Stage IV PDAC.

Methods: Eight escalating FG-3019 doses/regimens ranging from 3 to 45 mg/kg Q2W and 17.5 and 22.5 mg/kg QW were evaluated. Toxicity, tumor response by CA19.9 and CT scan RECIST criteria, progression-free and overall survival were assessed. FG-3019 day 15 trough plasma levels (D15Cmin), as a measure of exposure, and baseline CTGF levels were correlated with clinical outcomes.

Results: Seventy-five patients were enrolled over 39.6 months. Median and longest treatment duration were 3.3 and 20.9 months, respectively. FG-3019 was well tolerated with no dose-related trends observed in type or incidence of SAEs. No FG-3019- dose-liming toxicity was observed. Median PFS and OS were 3.7 and 7.4 months, respectively. High FG-3019 exposure (D15 Cmin ≥ 150 μg/mL), compared to low exposure, was associated with improved median OS (9.0 vs. 4.4 months, respectively, p=0.024), 1-year OS rate (34.2% vs. 10.8%, respectively, p=0.026), and median PFS (6.0 vs. 2.4 months, respectively, p=0.032). Plasma CTGF showed potential as a predictive biomarker, as low baseline CTGF levels (<10 ng/mL) were associated with improved OS (10.1 vs. 4.4 months, p=0.028); and PFS (5.5 vs. 2.3 months, p=0.019).

Conclusions: FG-3019 can be safely combined with gemcitabine and erlotinib without incremental toxicity in advanced pancreatic cancer patients. Low baseline CTGF and high FG-3019 exposure were associated with improved survival. Targeting of PDAC by FG-3019 in combination with cytotoxic chemotherapy represents a novel approach to this difficult disease and further trails are warranted.

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