- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02986867
SAbR Induced Innate Immunity in Urothelial Carcinoma, Melanoma, and Cervical Carcinoma
SAbR-Induced Innate Immunity in Urothelial Carcinoma, Melanoma, and Cervical Carcinoma
Study Overview
Status
Intervention / Treatment
Detailed Description
Within 2 weeks of planned SAbR, patients will have a core biopsy of the lesion to receive SAbR. Laboratory values will be obtained prior to biopsy. Once the laboratory values are found to be within the safe margin for biopsy, multiple (approximately 5) core biopsies will be obtained with an 18-guage or 19-gauge needle under CT or US guidance. Tissue will be snap frozen with liquid nitrogen and immediately transferred to the laboratory of Dr. Zhijian "James" Chen, PhD, Professor, Department of Molecular Biology.
SAbR will be administered as per the guidelines of UTSW with a single 24-27Gy or three 10-14 Gy/fraction fractions totaling 33-48Gy. Lesions receiving SAbR will be called "radiated" lesions. Prior irradiated lesions will be excluded. SABR will be administered within 2 weeks of the study initial core biopsy. The SAbR dose and fractionation scheme is generated to deliver a potent dose to ablate the targeted lesions and at the same time maximize an immune response. Since multiple studies have shown an influx of lymphocytes and monocytes after tumor irradiation and since these cells play a critical role in antigen presentation and initiation of an adaptive immune response, multiple fraction irradiation which would kill these infiltrating immunocytes, is discouraged. Therefore a single fraction or a three fraction treatment regimen is recommended, and a single fraction treatment is preferred over three fractions. Due to normal organ toxicity and limits of dose constraints, sometimes a three fraction treatment must be undertaken and in those cases it is recommended that the treatment course is completed within 7-10 days-preferably 5 business days. Radiation dose-immune response studies have shown a linear increase in immune response with increased dose per fraction of radiation without demonstration of a plateau. Two studies comparing 15Gy x 1 vs 5Gy x3, and 20Gy x1 vs 5Gy x4 have shown a superior immune response generated by the single fraction radiation. Clinical experience with oligometastatic patients treated at 1-5 sites of disease has also showed an increase in progression-free survival with the increasing radiation dose per fraction. A dose of less than 7.5 Gy per fraction has demonstrated lower induction of systemic IFN-γ producing cells, and a previous phase II study of mRCC patients treated with HD IL-2 and singe fraction of 8Gy irradiation to a single lesion did not show an overall improvement in response rate. Therefore 8Gy per fraction is the lowest permitted dose for this study and can be used only when administering the three fraction regimen as described in the prescription dose table below. Investigators will have discretion in choosing from either of the biologically equivalent dose levels using one or three fractions, although a single fraction is preferred over three fraction treatments. Treating physician will have further discretion in selecting the number and location of sites to treat if multiple sites of disease are present. Maximum number of lesions treated is deemed as feasible per the treating radiation oncologist. However, for the purposes of this protocol, only a single site will be studied and must be safely amenable to repeat core biopsy. Thus, the single site for the study will be either in subcutaneous tissues, nodes, isolated masses or liver. The gross target/tumor volume--GTV should be at least 2 cm3 in size, corresponding to roughly a 1.5 cm diameter tumor. This is to ensure that adequate tumor volume for therapy and for biopsy and therefore adequate tumor cells roughly 108 -109 cells/cm3 are killed for antigen presentation. Treating physicians should choose their dose based on established planning guidelines at their center including their ability to respect normal tissue tolerance.
Within 24 + 6 hours of the first SAbR, a second core biopsy of the "target" irradiated lesion will be performed identically to the first biopsy.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
Texas
-
Dallas, Texas, United States, 75063
- University of Texas Southwestern Medical Center
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Histologic diagnosis of advanced/metastatic urothelial carcinoma, melanoma, or cervical carcinoma.
- Planned treated with SAbR.
- Age greater than or equal to 18 years.
- Lesion to receive SAbR safely accessible for core biopsy-mass >1.5cm diameter and located in node, liver, or soft tissues.
- Hgb >10g/dL before or after transfusion.
- Platelets >50,000/L
- INR <1.5
- If contrast enhanced CT needed to locate the lesion for core biopsy, then derived creatinine clearance >30cc/min
- Ability to understand and the willingness to sign a written informed consent.
Exclusion Criteria:
- Prior radiation therapy to target lesion.
- Target lesion not safely accessible for core biopsies.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: SAbR
SAbR treatment of lesions
|
SAbR will be administered as per the guidelines of UTSW with a single 24-27Gy or three 10-14 Gy/fraction fractions totaling 33-48Gy.
Lesions receiving SAbR will be called "radiated" lesions.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Comparison of immune checkpoint treated tumors
Time Frame: 36 months
|
Compare cGAMP levels, interferon response gene expression and phospho-STING in tumors of immune checkpoint treated patients.
|
36 months
|
SAbR effects on cGAMP in tumors
Time Frame: 36 months
|
Number of participants with SAbRrelated tumor changes indicated by cGAMP in comparison to Baseline.
|
36 months
|
SAbR effects on interferon response in tumors
Time Frame: 36 months
|
Number of participants with SAbRrelated tumor changes indicated by interferon response mRNAs in comparison to Baseline.
|
36 months
|
SAbR effects on phosphor-STING in tumors
Time Frame: 36 months
|
Number of participants with SAbRrelated tumor changes indicated by phospho-STING in comparison to Baseline.
|
36 months
|
Collaborators and Investigators
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- STU 092016-055
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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