Clinical trial · Interventional
Analyzing Childhood Recall Antigens in Patients With Pancreatic Cancer
Analysis of T Cells to Tetanus Toxoid Antigens in Patients With Pancreatic Cancer Treated With Gemcitabine
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Why stopped (as posted): Slow accrual
Summary
Brief summary (as posted)
The investigator is developing an immune therapy against pancreatic cancer. Immune cells, known as "T cells with tumor killing capacity", are involved in this immune therapy. In mice with pancreatic cance there is evidence that one tetanus toxoid (TT) vaccination (that patients receive from childhood) combined with Gemcitabine activates these killer T cells. (Gemcitabine improves T cell responses) These killer T cells are able to destroy tumor cells uploaded with TT protein (such studies are planned in future clinical trials). The goal of this study is to test whether one TT vaccination combined with Gemcitabine treatment activates the same T cells in pancreatic cancer patients.
Conditions
Conditions (1)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Pancreatic Cancer | Malignant Pancreatic Neoplasm | CURATED_EXACT | 0.92 |
Interventions
Interventions (2)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Gemcitabine | Drug | Gemcitabine | ALIAS |
| TT vaccine booster | Biological | — | UNRESOLVED |
Design
Arms and outcomes
Arms (1)
- type
- EXPERIMENTAL
- label
- Gemcitabine with TT vaccine booster
- description
- Gemcitabine will be delivered as is standard of care. Patients diagnosed with pancreatic ductal carcinoma (PCD) will be treated with Gemcitabine and boosted once with the human childhood vaccine to TT
- interventionNames
- Drug: Gemcitabine
- Biological: TT vaccine booster
Primary outcomes (4)
- measure
- Change in CD4 T Cell Responses Before TT Booster
- timeFrame
- Day 1
- description
- The relative difference in CD4 T cell counts before and after administration of the TT booster vaccine (Day 8) will be compared. The number of cells per microliter (cells/µL) will be determined. The proportion of at least 3-fold increase will be reported along with its 95% CI. The actual magnitude of change will be examined by taking a log scale of CD4 counts and report a mean of change on CD4 on its log scale along with its 95% CI.
- measure
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 18 Years
- Maximum age
- 100 Years
Show eligibility criteria text
Inclusion Criteria: 1. Histologically or cytologically confirmed adenocarcinoma of the pancreas 2. Patients is a candidate for gemcitabine chemotherapy (adjuvant, metastatic, locally advanced, borderline resectable settings all permitted) 3. Patients at least 18 years of age 4. ECOG performance status 0-2 5. Consent to donate 12 tubes of peripheral blood of 10 mL each 6. Adequate organ function as defined as -neutrophil count ≥ 1200 -platelets ≥ 75,000 -hemoglobin ≥ 8.0 -bilirubin ≤ 2.0 -creatinine ≤2.0 or calculated GFR ≥ 30 7. Ability to understand and willingness to sign a written informed consent document 8. Prior chemotherapy permitted, as long as 60 days have lapsed since last dose. Prior radiation therapy permitted, as long as 28 days lapsed since last treatment. 9. Patients may receive other concurrent chemotherapy, immunotherapy, or radiotherapy Exclusion Criteria: 1. Patients never been immunized with tetanus toxoid (TT). Patients with a history of adverse reaction to tetanus vaccine (with the exception of self-limited fever or local tissue reaction 2. Patients may not be receiving any investigational agents 3. Pregnant women 4. Patients with HIV
References
Publications (0)
Data not yet available