Vaccination of Patients With Stage IV Melanoma With Dendritic Cells Generated Ex Vivo From Monocytes and Loaded With Heat Treated Killed Allogeneic Melanoma Cells
A novel dendritic cell vaccine has been developed at the Baylor Institute for Immunology
Research (BIIR). Pre-clinical studies have found that this dendritic cell vaccine is more
efficient in inducing a tumor specific immunity than other dendritic cell vaccines. Further
studies in the BIIR have been done with dendritic cells that were loaded with killed
melanoma cells from a melanoma cell line treated with heat before loading. Both studies have
shown that DCs manufactured in this novel way were more efficient in priming the melanoma
specific CD8+ cells. Thus, the strategy for this clinical trial will be to test recent
laboratory findings in the clinical setting. An additional objective of the study will be to
determine the effectiveness of a frozen vaccine product which differs from previous vaccines
that were manufactured "fresh".
This clinical trial will evaluate the novel dendritic cell vaccine in patients with Stage IV
melanoma. The trial will accrue a total of 30 subjects. The primary goal of this trial will
be to test the safety/tolerability/feasibility of the vaccine preparation and the rate of
objective clinical response. A 15% objective response rate will be accepted in patients who
have failed previous therapy with IL-2 and/or dacarbazine (DTIC) and/or temozolomide which
are standard treatments for patients with malignant melanoma.
Each subject will be given 7 initial injections in a fixed dose amount. The first 4 doses
will be given at 2-week intervals (Weeks 0, 2, 4 and 6); the last 3 doses will be given at
4-week intervals (Weeks 10, 14, and 18). Those patients who exhibit stable disease, partial
response or complete response after 7 injections will be given 4 more vaccinations. Each of
these additional 4 vaccinations will be given 3 months apart (Weeks 36, 48, 72 and 96).
Scans and re-staging tests will be performed at scheduled intervals throughout the study.
Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
Safety and tolerability of the novel DC vaccination product in human subjects
Anna Karolina Palucka, MD, PhD
Baylor Institute for Immunology Research: Baylor University Medical Center
United States: Food and Drug Administration
Baylor IRB #005-065-02
|Mary Crowley Medical Research Center: Baylor University Medical Center||Dallas, Texas 75246|