2017-07-28
2025-06
2025-06-01
22
NCT03269526
University of Virginia
University of Virginia
INTERVENTIONAL
BATs Treatment for Pancreatic Cancer, Phase Ib/II
This protocol will confirm toxicities and estimate the clinical efficacy of combining anti-CD3 x anti-EGFR bispecific antibody (EGFRBi) armed activated T cells (EGFR BATs) given to patients with locally advanced or metastatic pancreatic cancer who have received at least one dose of first line chemotherapy and may have responding, stable or progressive disease. Phase Ib will confirm a safe dose of 8 infusions, given twice weekly, of EGFR-BATs in 3 to 6 subjects. The phase II portion of the trial will test the clinical efficacy of this dose in 22 patients (including those in Phase Ib).
Once subjects are determined eligible, white blood cells (lymphocytes) are collected via leukapheresis procedure at approximately 3 to 4 weeks prior to first EGFR-BATs infusion. The white blood cells, specifically T cells, are then mixed with two proteins - OKT3 and IL-2 which activates the cells to multiply. After approximately 14 days in culture, the activated T cells are coated with the OKT3 and cetuximab to produce bispecific antibody armed T cells (BATs). Cells are then frozen and stored until scheduled to be infused. Within one to two weeks prior to infusion of the study treatment, subjects will receive one dose of chemotherapy. The choice of chemotherapy agent(s) is at the discretion of the treating physician. At approximately 4 weeks following leukapheresis procedure, twice weekly or weekly infusions of the BATs cells will take place (twice weekly for participants enrolled before DATE and weekly for participants enrolled after DATE). A total of eight twice weekly infusions or four weekly infusions will be given over a four week period. Please note that the weekly dose for both groups of participants is the same; participants that received twice weekly dosing received half of the weekly dose at each infusion. Follow-up appointment schedule will include clinic visits at 1 to 2 weeks, 4 to 5 weeks, 2 months, 4 months and 6 months following the last infusion of BATs cells.
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Registration Dates | Results Reporting Dates | Study Record Updates |
---|---|---|
2017-08-11 | N/A | 2024-09-16 |
2017-08-30 | N/A | 2024-09-19 |
2017-08-31 | N/A | 2024-09 |
This section provides details of the study plan, including how the study is designed and what the study is measuring.
Primary Purpose:
Treatment
Allocation:
Na
Interventional Model:
Single Group
Masking:
None
Arms and Interventions
Participant Group/Arm | Intervention/Treatment |
---|---|
EXPERIMENTAL: EGFR BATs after standard of care chemo Subjects will undergo apheresis to collect peripheral blood mononuclear cells. Cells will be cultured for up to 2 weeks before activated T-cells will be harvested, armed with EGFR Biarmed activated T-cells, washed to remove unbound EGFRBi, and cryopreserv | DRUG: EGFR BATs after standard of care chemo
|
Primary Outcome Measures | Measure Description | Time Frame |
---|---|---|
Incidence of adverse events | Safety will be assessed by incidence and severity of adverse events, changes in laboratory findings, physical examinations, vital signs, and the number of dose limiting toxicities and other discontinuations due to adverse events. | From the beginning of treatment (bridging chemotherapy) until no sooner than 30 days following the last study treatment |
Overall survival | An improvement in median overall survival (OS), defined as an increase from historical data of 8.7 months to 18.0 months. | Until subject's death or study closure (whichever occurs first) for an average of 36 months from study treatment completion |
Secondary Outcome Measures | Measure Description | Time Frame |
---|---|---|
Cellular or humoral anti-pancreatic cancer responses | These will be measured in peripheral blood mononuclear cells | Every 2-6 months after the last EGFR BATs infusion for as long as the response lasts -- an average of 4 months |
Clinical Efficacy | Progression-free survival, measured by immune-related response criteria (irRC) | Imaging will be performed prior to treatment, 2 months after the last BATs infusion, then according to standard of care for an average of 12 months |
Examine tumor tissue for immune system cells, cytokines and proteins to estimate whether the type and number of immune cells correlates with clinical responses | These immune system cells, cytokines and proteins include CD3, CD4, CD8, PD1/PDL1, monocytes subpopulations, MDSCs, and cytoplasmic IFN-y, tumor infiltrating lymphocytes, and IL-10. This will be measured using immunohistochemical staining to quantitate type and number of immune system cells, cytokines, and proteins to estimate whether the type and number correlate with clinical responses. | Tumor paraffin blocks from tissue collected prior to treatment will be batched and analyzed within 1 year of completion of study accrual |
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person’s general health condition or prior treatments.
Ages Eligible for Study:
ALL
Sexes Eligible for Study:
18 Years
Accepts Healthy Volunteers:
This is where you will find people and organizations involved with this study.
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
General Publications