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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01099631
Other study ID # 2009LS003
Secondary ID 0906M68041Protoc
Status Completed
Phase Phase 1
First received
Last updated
Start date April 2010
Est. completion date June 2014

Study information

Verified date July 2020
Source Masonic Cancer Center, University of Minnesota
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The working hypothesis is that oral administration of an attenuated strain of Salmonella typhimurium is safe and efficacious for patients with unresectable hepatic metastasis from a solid tumor cancer. The primary objective of the study is to determine the MTD of Salmonella typhimurium in the treatment.


Description:

This phase I study will be done to evaluate a dose escalation scheme of oral administration of an attenuated strain of Salmonella typhimurium expressing human interleukin-2 (IL-2) in patients with unresectable hepatic metastases from a solid tumor cancer. Standard Phase I dose escalation scheme will be used to determine the MTD of Salmonella Typhimurium. Six dose levels of Salmonella will be studied with a minimum of 3 patients enrolled in a dose level.


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Study Design


Intervention

Biological:
Salmonella typhimurium
Attenuated Salmonella typhimurium (virulent strain x4550) will be given orally in escalating dose groups: Level 1 = 10^5, Level 2 = 10^6, Level 3 = 10^7, Level 4 = 10^8, Level 5 = 10^9, Level 6 = 10^10.

Locations

Country Name City State
United States Edward W. Greeno, MD Minneapolis Minnesota

Sponsors (1)

Lead Sponsor Collaborator
Masonic Cancer Center, University of Minnesota

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Number of Participants With Dose Limiting Events to Determine the Maximum Tolerated Dose (MTD) of Salmonella Typhimurium Maximum tolerated dose will be determined by the number of patients with Dose limiting toxicity (DLT) at a given dose level. DLT is defined as treatment related: Sepsis (salmonella) syndrome, Grade 4 vomiting or diarrhea, Other grade 3 or greater toxicity. If > or = 2 patients at a dose level has a DLT, this level will be declared the MTD. Up to 24 Weeks After Dose of Salmonella typhimurium
Secondary Number of Participants With Complete Response to Treatment Evaluation is performed using Response Evaluation Criteria in Solid Tumors (RECIST). Each patient will be assigned one of the following categories: Complete response (CR) the disappearance of all target lesion; Partial response (PR) at least a 30% decrease; Progressive disease (PD) at least a 20% increase, or the appearance of one or more new lesions; Stable disease (SD) neither sufficient shrinkage to qualify for partial response nor sufficient increase to qualify for progressive disease; early death from malignant disease; unknown (insufficient evaluation to determine response status). 8 Weeks After Treatment with Salmonella Typhimurium
Secondary Peripheral Blood NK Cells Count Patients receiving doses of 10^5 through 10^10 Colony forming units of Salmonella typhimurium had their peripheral blood flow cytometry performed to identify the NK (Natural killer) cells population (CD8-, CD4-, CD49b+) prior to administration and at 5 weeks post administration.
The flow cytometry data below was gathered by gating on the lymphocyte population of cells in the patient's blood, as determined by FSC vs. SSC. The mean percentage of NK cells in sample's lymphocyte population is given.
Baseline and 5 Weeks After Dosing with Salmonella typhimurium
Secondary Peripheral Blood T Cells Count Patients receiving doses of 10^5 through 10^10 Colony forming units of Salmonella typhimurium had their peripheral blood flow cytometry performed to identify the NK (Natural killer) cells population (CD25+, FoxP3+) prior to administration and at 5 weeks post administration.
The flow cytometry data below was gathered by gating on the lymphocyte population of cells in the patient's blood, as determined by FSC vs. SSC. The mean percentage of T cells in sample's lymphocyte population is given.
Baseline and 5 Weeks After Dosing with Salmonella typhimurium
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