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Blockade of PD-1 in Conjunction With the Dendritic Cell/AML Vaccine Following Chemotherapy Induced Remission

2014-08-27 03:14:52 | BioPortfolio

Summary

Acute myelogenous leukemia (AML) arises from leukemia stem cells that are difficult to eradicate and serve as a reservoir for disease relapse following chemotherapy. A promising area of investigation is the development of immunotherapeutic approaches that stimulate the immune system to recognize leukemia stem cells as foreign and eliminate them. The purpose of this research study is to determine the safety of the Dendritic Cell AML Fusion Vaccine (DC AML vaccine) alone, as well as of the combination of CT-011, after participants have achieved a remission with chemotherapy. In this clinical trial, patients are treated with a tumor vaccine alone or in combination with CT-O11, an investigational monoclonal antibody that may augment response to vaccination. Monoclonal antibodies are known to target specific cells (in this case, cells in the immune system). This immunotherapy may help to control leukemic cells that are resistant to chemotherapy and prevent disease recurrence. The DC AML vaccine is an investigational agent that tries to help the immune system to recognize and fight against cancer cells. It is hoped that the combination of DC AML vaccine and CT-011 will prevent or delay the disease from coming back.

Description

- This study is divided into two groups: Group 1 participants will receive the DC AML Fusion Vaccine and Group 2 participants will receive the CT-011 and the DC AML vaccine. The first 10 participants will be in Group 1 and the remaining 25 will be in Group 2.

- Group 1 participants will receive the DC AML vaccine and GM-CSF 4-8 weeks after completion of chemotherapy for acute myelogenous leukemia (AML). GM-CSF is a drug that stimulates white blood cells and is given with the DC AML Vaccine in an effort to enhance the effect of the vaccine. Participants in this group will receive 3 doses of the vaccine at 4 week intervals.

- Group 2 participants will receive infusions of CT-011 4-8 weeks after completion of chemotherapy for AML. Participants in this group will receive a total of 3 doses of CT-011 at 6 week intervals. In addition, they will receive a vaccination of the DC AML vaccine two weeks following each infusion of CT-011.

- All participants will undergo the following procedures: Isolation of tumor cells by either bone marrow biopsy or blood draw; Initial chemotherapy for AML with standard therapy; Leukopheresis (collection of white blood cells from the blood).

- All participants will also have blood tests, a physical exam, and an electrocardiogram prior to each dose of vaccine.

- Four weeks following the final vaccination, participants will undergo a skin test called "delayed-type hypersensitivity" (DTH). This is an injection of the tumor cells under the skin to measure how the immune system responds. The tumor cells are broken up and irradiated to prevent their growth.

Study Design

Allocation: Non-Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Conditions

Acute Myelogenous Leukemia

Intervention

DC AML Vaccine, CT-011

Location

Beth Israel Deaconess Medical Center
Boston
Massachusetts
United States
02215

Status

Recruiting

Source

Dana-Farber Cancer Institute

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:14:52-0400

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Medical and Biotech [MESH] Definitions

A rare acute myeloid leukemia characterized by abnormal EOSINOPHILS in the bone marrow.

An acute myeloid leukemia in which abnormal PROMYELOCYTES predominate. It is frequently associated with DISSEMINATED INTRAVASCULAR COAGULATION.

An acute leukemia exhibiting cell features characteristic of both the myeloid and lymphoid lineages and probably arising from MULTIPOTENT STEM CELLS.

Conditions in which the abnormalities in the peripheral blood or bone marrow represent the early manifestations of acute leukemia, but in which the changes are not of sufficient magnitude or specificity to permit a diagnosis of acute leukemia by the usual clinical criteria.

An acute myeloid leukemia in which 80% or more of the leukemic cells are of monocytic lineage including monoblasts, promonocytes, and MONOCYTES.

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