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Clinical Trial Summary

This study is a first in human Phase 1 study that involves patients with a type of cancer called HER2 (Human Epidermal Growth Factor Receptor 2) positive cancer. This study asks patients to volunteer to take part in a research study investigating the safety and efficacy of using special immune cells called HER2 chimeric antigen receptor specific cytotoxic T lymphocytes (HER2 specific CAR T cells), in combination with intra-tumor injection of CAdVEC, an oncolytic adenovirus that is designed to help the immune system including HER2 specific CAR T cell react to the tumor. The study is looking at combining these two treatments together, because we think that the combination of treatments will work better than each treatment alone. We also hope to learn the best dose level of the treatments and whether or not it is safe to use them together. In this study, CAdVEC will be injected into participants tumor at one tumor site which is most easiest to reach. Once it infects the cancer cells, activation of the immune response will occur so it can attack and kill cancer cells. (This approach may have limited effects on the other tumor sites that have not received the oncolytic virus injection, so, patients will also receive specific T cells following the intratumor CAdVEC injection.) These T cells are special infection-fighting blood cells that can kill cells infected with viruses and tumor cells. Investigators want to see if these cells can survive in the blood and affect the tumor. Both CAdVEC and HER2-specific autologous CAR T are investigational products. They are not approved by the FDA.


Clinical Trial Description

Treatment with CAdVEC: On the first day of your treatment, participants will receive an injection of CAdVEC into your tumor. A blood sample will be obtained from the participant before the CAdVEC intratumor injection . Depending on the location of the tumor, different techniques can be used for the injection into your tumor. The most common route of injection is ultrasound-guided percutaneous (needle puncture in the skin) injection, but endoscopic (using a lighted, flexible instrument called an endoscope) ultrasound-guidance will be used for some patients as appropriate. Prior to percutaneous injection, participants may receive an anti-anxiety medicine to calm them down, to relieve muscle spasms, and provide sedation. If the participants tumor is injected during an endoscopic procedure, the procedure may be done under sedation. Treatment with HER2- specific autologous T Cells: Earlier the participant gave blood for us to make HER2 targeting cytotoxic T-lymphocytes (HER2- specific autologous T Cells). These cells are grown in the lab and frozen for participants. Investigators made the cells by combining dendritic cells (DCs) or monocytes with the T cells in the presence of produced mixtures of adenoviral proteins. Investigators then put a new gene in to those T cells to make them specifically attract to and kill HER2 positive tumors. As the T cells grow, they are cultured by adding adenoviral proteins for stimulation and expansion. Investigators call those T cells: HER2- targeting T cells (HER2- specific autologous T Cells). This study looks at different doses of HER2- specific autologous T Cells. The decision about the dose participants receive is determined when enrolled on the study. Seven dose levels will be evaluated. Cohorts of size 3 will be enrolled at each dose level until 9 evaluable patients have been studied at a single dose. Each patient will receive an intratumoral injection of CAdVEC alone or combined with an injection of HER2.CAR T cells. CAdVEC intratumoral injection will be given as a single injection to a single appropriate tumor site by direct, endoscopic, or image-guided injection on Day 1. After receiving the CAdVEC injection participants will be observed for at least 4 hours before leaving the hospital. During that time the study team will monitor vital signs and watch for any side-effects from the treatment. Participants will also be contacted by telephone about 24 hours after receiving the CAdVEC injection. HER2.CAR T cells will be given intravenously on day 4 after CAdVEC injection, with a 3 day window (until day 7). Before receiving the T cell infusion, participants may be given Benadryl (diphenhydramine) and Tylenol (acetaminophen). Tylenol and Benadryl are given to prevent a possible allergic reaction to the T cell administration. After receiving the infusion of HER2-specific autologous T cells participants will be observed for at least 3 hours before they may leave the hospital. Additionally, participants must plan to remain in the Houston area for at least 3 weeks after the infusion. Standard medical tests before treatment: Before being treated, participants will receive a series of standard medical tests and procedures as well as research blood draws. Standard Medical tests during and after treatment: During treatment, participants will receive standard medical tests and procedures as well as research blood draws. Study specific evaluations: Investigators will follow participants closely after treatment for any side effects for at least 2 years after the last infusion. To learn more about the way the T cells are working in the body, an extra blood sample will be taken before the CAdVEC injection, before the CAR T cell infusion, and at week 1, 2, 4 , 6, months 3, 6, 9 and 12 after CAR T cell infusion. Thereafter every 6 months up to 5 years and then yearly for 15 years. Investigators will use this blood to see how long the T cells last and to look at the immune response to the cancer. Investigators may also obtain a tumor tissue biopsy before CAdVEC injection, between days 5 and 10 after infusion of the HER-2 CAR-T cells, and at the time tumor recurs. Urine will be collected before CAdVEC injection, Days 2, 4 (or the day of CAR T-cell infusion), weeks 1 and 2 after CAR T cell infusion. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03740256
Study type Interventional
Source Baylor College of Medicine
Contact Shalini Makawita, MD
Phone 832-957-6500
Email Shalini.Makawita@bcm.edu
Status Recruiting
Phase Phase 1
Start date December 14, 2020
Completion date December 30, 2038

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