The purpose of the study is to gather data on feasibility and on immune and clinical efficacy of intratumoral dendritic cell (DC) vaccination in combination with local radiotherapy in patients with recurrent lymphoma
Lymphoma is extremely sensitive to radiation and is a commonly used therapy. The major issue in application of local radiotherapy is the relative short duration of response and as a consequence is used mainly for palliation. Therefore novel therapies are needed to improve the outcome of patients with lymphomas. The potential specificity of the immune system to recognize and eliminate tumor cells is especially relevant in lymphoma. Immune responses are induced, coordinated and regulated by dendritic cells (DCs), the most potent antigen-presenting cells. Based on the central role of DCs in initiating immune responses, four vaccinations will be administered at intervals beginning two days after low dose radiation is given to the tumor site.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Day 1 and Day 2: 2 Gy Radiation on Day 1 and Day 2 to tumor site. Day 4, 8, 11, 18: 0.5mL injection of Autologous dendritic cells generated using GM-CSF, interferon alpha and LPS.
Safety and feasibility of intratumoral dendritic cell vaccination
Time frame: 2 years
Clinical activity-response in local and distant lesions
Time frame: 2 years
Immunological response with conventional CTL assay, proliferation assay and microarray-based immune gene profiling using peripheral blood and/or biopsied tumor
Time frame: 2 years
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