Allogeneic Tumor Cell Vaccine With Metronomic Oral Cyclophosphamide and Celecoxib as Adjuvant Therapy for Lung and Esophageal Cancers, Thymic Neoplasms, Thoracic Sarcomas, and Malignant Pleural Mesotheliomas
试验速览
- 阶段
- 1 期
- 状态
- 终止
- 入组人数
- 10
- 试验地点
- 1
- 主要终点
- Tabulation of toxicity type and grade
研究概览
简要总结
Background:
- Certain types of lung, esophageal, or thymic cancers and mesotheliomas have specific antigens (protein molecules) on their surfaces. Research studies have shown that giving a vaccine that contains antigens similar to these may cause an immune response, which may keep tumors from growing. Researchers are also interested in determining whether the chemotherapy drug cyclophosphamide and the anti-inflammatory drug celecoxib may help the vaccine work better, particularly in patients with lung cancer.
Objectives:
- To evaluate the safety and effectiveness of tumor cell vaccines in combination with cyclophosphamide and celecoxib in patients with cancers involving the chest.
Eligibility:
- Individuals at least 18 years of age who have had surgery for small cell or non-small cell lung cancer, esophageal cancer, thymoma or thymic carcinoma, and malignant pleural mesothelioma.
Design:
- Following recovery from surgery, chemotherapy, or radiation, participants will have leukapheresis to collect lymphocytes (white blood cells) for testing.
- Participants will receive celecoxib and cyclophosphamide to take twice a day at home, 7 days before the vaccine.
- Participants will have the vaccine in the clinical center (one or two shots per month for 6 months), and will stay in the clinic for about 4 hours after the vaccine. Participants will keep a diary at home of any side effects from the vaccine, and will continue to take cyclophosphamide and celecoxib.
- One month after the sixth vaccine, participants will provide another blood sample for testing, and if the tests are satisfactory will return to the clinic every 3 months for 2 additional vaccines.
- Participants will return to clinic for follow-up physical examinations, lab tests, and scans every 3 months for 2 years and then every 6 months for up to 3 years.
详细描述
Background:
During recent years, the cancer-testis (CT) antigens have emerged as attractive targets for cancer immunotherapy. Whereas lung and esophageal cancers, as well as malignant pleural mesotheliomas express a variety of CT antigens, immune responses to these antigens appear uncommon in patients with these malignancies, possibly due to low-level, heterogeneous antigen expression, as well as immunosuppressive regulatory T cells. Our published studies indicate that numerous CT antigens can be induced in tumor cells by DNA demethylating agents and histone deacetylase (HDAC) inhibitors. Conceivably, vaccination of cancer patients with allogeneic tumor cells expressing high levels of multiple CT antigens in combination with depletion of T regulatory cells will induce broad immunity to these antigens. In order to examine this issue, patients with lung and esophageal cancers, thymic neoplasms, primary thoracic sarcomas, and malignant pleural mesotheliomas will be vaccinated with irradiated K562 erythroleukemia cells expressing GM-CSF (K562-GM) following completion of appropriate combined modality therapy. Vaccines will be administered in conjunction with metronomic oral cyclophosphamide (50 mg PO BID x 7dq 14d), and celecoxib (400 mg PO BID). Serologic responses to a variety of recombinant CT antigens as well as cell-mediated recognition of autologous tumor cells and EBVtransformed B cells will be assessed before and after vaccination.
Objective:
-To assess the safety of K562-GM allogeneic tumor cell vaccines in combination with oral metronomic cyclophosphamide and celecoxib in thoracic oncology patients.
Eligibility:
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- 未提供
排除标准
- 未提供
研究组 & 干预措施
1
Allogeneic tumor cell vaccine + chemotherapy
干预措施: Allogeneic Tumor Cell Vaccine (K562) (Biological)
1
Allogeneic tumor cell vaccine + chemotherapy
干预措施: Celecoxib (Drug)
1
Allogeneic tumor cell vaccine + chemotherapy
干预措施: cyclophosphamide (Drug)
结局指标
主要结局
Tabulation of toxicity type and grade
时间窗: 2 years
If 25 patients are enrolled and the true probability of a grade 3 or worse toxicity (of any sort) were 20%, then the probability of having 4 or more patients with this occurring is 76.6%. On the other hand, if the combination was very safe and the true probability of a grade 3 or worse toxicity was 5%, then the probability of having 4 or more patients with this occurring would be 3.4%. Thus, if 25 patients were treated, the combination may be considered to have potentially lower safety than tolerable if 4 or more patients experience grade 3 or worse toxicity.
次要结局
- To ascertain if K526-GM vaccines induce immunity to CT antigens commonly expressed in thoracic malignancies.(2 years)
- To determine if metronomic oral CP and celecoxib reduce the number, percentage and function of CD4+ CD25+ Fox P3+ regulatory T cells (T reg) in peripheral blood of thoracic oncology patients.(2 years)