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Hedgehog Inhibitors for Metastatic Adenocarcinoma of the Pancreas

2014-07-23 21:09:48 | BioPortfolio

Summary

This is an open-label, single arm, multi-center, Phase II trial to evaluate the progression free survival in patients with metastatic adenocarcinoma of the pancreas treated with a hedgehog inhibitor (GDC-0449) in combination with chemotherapy (gemcitabine and nab-Paclitaxel).

Description

The emergence of new small molecules with capacity of blocking the Hedgehog signaling pathway provides a novel therapeutic approach in pancreatic adenocarcinoma treating the primary tumor, stroma, systemic metastases and pancreatic cancer stem cells by hedgehog pathway inhibition. This phase 2 clinical trial will evaluate the progression free survival (PFS) in patients with previously untreated metastatic pancreatic adenocarcinoma. We hypothesize that the combination of cytotoxic agents (gemcitabine and nab-paclitaxel) with the Hedgehog inhibitor GDC-0449 may increase PFS.

This study includes correlative studies to attempt to understand the stem cell biology and mechanism for any observed clinical benefits with the use of Hedgehog inhibitor GDC-0449. These include changes in the hedgehog pathway and changes in pancreatic cancer stem cell markers with pre and post treatment biopsies. The safety of GDC-0449 when combined with chemotherapy gemcitabine and nab-paclitaxel will also be assessed by evaluating adverse event rate.

Following the determination of eligibility patients will receive the following treatment:

1. One cycle of Gemcitabine 1000 mg/m2 and nab-Paclitaxel 125 mg/m2 on days 1, 8, and 15 (28 days cycle) then

2. Gemcitabine 1000 mg/m2 and nab-Paclitaxel 125 mg/m2 on days 1, 8, and 15 every 28 days cycle in combination with oral GDC-0449 150 mg daily

Patients may continue on treatment regimen until they experience progressive disease or unacceptable toxicity, require palliative radiotherapy, withdraw consent or the physician feels it is not longer in their best interest to continue on treatment.

Study Design

Control: Historical Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Conditions

Metastatic Pancreatic Cancer

Intervention

Gemcitabine, nab-Paclitaxel, GDC-0449

Location

Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Baltimore
Maryland
United States
21205

Status

Not yet recruiting

Source

Sidney Kimmel Comprehensive Cancer Center

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-07-23T21:09:48-0400

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GDC-0449 and Gemcitabine Hydrochloride in Treating Patients With Advanced Pancreatic Cancer

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Medical and Biotech [MESH] Definitions

An injectable formulation of albumin-bound paclitaxel NANOPARTICLES.

Tumors or cancer of the PANCREAS. Depending on the types of ISLET CELLS present in the tumors, various hormones can be secreted: GLUCAGON from PANCREATIC ALPHA CELLS; INSULIN from PANCREATIC BETA CELLS; and SOMATOSTATIN from the SOMATOSTATIN-SECRETING CELLS. Most are malignant except the insulin-producing tumors (INSULINOMA).

Star-shaped, myofibroblast-like cells located in the periacinar, perivascular, and periductal regions of the EXOCRINE PANCREAS. They play a key role in the pathobiology of FIBROSIS; PANCREATITIS; and PANCREATIC CANCER.

Metastatic breast cancer characterized by EDEMA and ERYTHEMA of the affected breast due to LYMPHATIC METASTASIS and eventual obstruction of LYMPHATIC VESSELS by the cancer cells.

Mucocellular carcinoma of the ovary, usually metastatic from the gastrointestinal tract, characterized by areas of mucoid degeneration and the presence of signet-ring-like cells. It accounts for 30%-40% of metastatic cancers to the ovaries and possibly 1%-2% of all malignant ovarian tumors. The lesions may not be discovered until the primary disease is advanced, and most patients die of their disease within a year. In some cases, a primary tumor is not found. (From Dorland, 27th ed; Holland et al., Cancer Medicine, 3d ed, p1685)

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