A Phase I Trial of Surgical Resection Followed by Vaccination With Dendritic Cells Pulsed With Tumor Lysate With Imiquimod for Patients With Malignant Glioma
试验速览
- 阶段
- 1 期
- 状态
- 已完成
- 入组人数
- 71
- 试验地点
- 2
- 主要终点
- safety of an autologous tumor lysate- loaded dendritic cell (DC) vaccine with Imiquimod cream application
研究概览
简要总结
Malignant gliomas are very aggressive and among the most common of brain tumors. A diagnosis carries with it a median survival of approximately 24 months. The current standard treatment of surgical resection followed by radiation therapy and chemotherapy has not substantially prolonged survival and even the few treatment options shown to exhibit small increases in survival primarily benefit certain (i.e., young) patient subpopulations.
Cancer vaccines represent one novel therapy for malignant gliomas. The goal is for the body to recognize the tumor cells are foreign and produce its own response to fight off recurring tumor cells. A promising means of causing an immune response so the body can create this immunity is through the use of dendritic cell (DC) vaccines.
详细描述
Dendritic cells are a small group of cells contained in everyone's white blood cell population. These cells are responsible for letting the immune system know that something foreign is in the body. Dendritic cells help the body ward off disease by alerting the immune system.
Imiquimod in an FDA-approved cream that is an immune response modifier, which will be used off-label in this study. Imiquimod cream (5%, 250 mg) will be self-applied topically by patients to a 4 x 5-cm outlined area of healthy skin overnight on days 1-5 of each cycle. Application and removal times will be recorded in treatment diaries. Dendritic cells will be injected intradermally into the imiquimod-treated site on day 3. Cycles will be repeated every 2 weeks for a total of three injections. This study will examine the effectiveness of using Imiquimod with DC vaccines, as previous studies within the oncology department have studied the effectiveness of DC vaccines.
Imiquimod (Aldara, 3M) is one of the better characterized imidazoquinolines and is the only one currently approved for clinical use as a topical ointment. It has been demonstrated to possess antiviral and antitumor properties, and it is approved for the treatment of genital warts. Vaccination studies in animal models have indicated that imidazoquinolines can boost the magnitude and quality of T cell responses. It is considered a Toll-like receptor agonist which controls the activation of dendritic cells.
In humans, it was shown that topical imiquimod treatment may enhance the immunogenicity of a melanoma vaccine. Additionally, injection of immature DCs into imiquimod-pretreated skin lead to DC activation in situ and enhanced migratory capacity to draining lymph nodes in cancer patients. In this study, the investigators test the safety and feasibility of imiquimod in a vaccine against brain cancer to induce a more potent immune response that what has previously been observed.
In prior Phase I and Phase II studies, patients who received chemotherapy following DC demonstrated longer progression free and overall survival than the patients who received DC or chemotherapy alone. The use of DC vaccines is considered investigational and has not yet been approved by the FDA, but the investigators have obtained an IND for use of the vaccines.
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
- •Patients must have a histopathological diagnosis of malignant glioma.
- •Patients 18 years of age or older.
- •Patients must have undergone maximal surgical resection of malignant glioma
- •Both male and female of childbearing age entering the protocol must use a medically accepted form of birth control during the study, will be required to have a negative pregnancy test for female.
- •Patients must have a Karnofsky performance score of at least 60%.
- •Patients must be off steroids for at least two weeks prior to vaccination.
- •Baseline hematologic and complete metabolic panel within one week of initiating therapy must fall within normal ranges
- •Patient must be capable of signing IRB approved Research Consent and Release of Medical Records form.
排除标准
- •Severe pulmonary, cardiac or other systemic disease associated with an unacceptable anesthetic or operative risk.
- •The presence of an acute infection requiring active treatment will be criteria for delay or exclusion.
- •Contraindication to MRI procedure unless otherwise determined by PI.
- •Patients with a known history of an autoimmune disorder.
- •Pregnancy.
- •Patients positive for hepatitis B, hepatitis C, HIV I/II, syphilis, HTLV I/II, HCV.
- •Patients with allergy to Gentamicin.
- •Patient inability to participate as determined by PI discretion.
结局指标
主要结局
safety of an autologous tumor lysate- loaded dendritic cell (DC) vaccine with Imiquimod cream application
时间窗: 1 year
Safety relative to vaccine will be monitored in terms of Serious Adverse Events according to FDA regulations and recorded on a MedWatch 3500a form. A Data Safety Monitoring Committee will meet every 6 months to review AEs/SAE's. In the event of any subject death within a 30 day period following study agent administration, the DSMC will review the death within that time frame. If two deaths are deemed to be "probably" or "definitely' related to study agent administration, all study agent administrations will be stopped and the FDA and IRB will be notified of study cessation.
次要结局
- progression free survival of patients after they receive tumor lysate-loaded DC vaccine with Imiquimod cream application.(1 year)
研究者
John Yu
MD
Cedars-Sinai Medical Center