Phase I/II Trial of Stereotactic Body Radiotherapy With Concurrent Fixed Dose Tyrosine Kinase Inhibitors in Metastatic Renal Cell Carcinoma: Dose Limiting Toxicity and Abscopal Effect.
Tyrosine kinase inhibitors (TKIs) are often used in the standard treatment for patients with metastasized renal cell carcinoma. In addition to their ability to specifically inhibit tumor growth, TKIs also interfere with the vascularisation of the tumor. Unfortunately, most patients do not obtain long-lasting clinical benefit from this treatment. The goal of the current study is to enhance the effect of TKIs by combining them with stereotactic radiotherapy treatment of one of the metastases. This type of radiotherapy allows us to precisely irradiate the tumor with minimal effect on the surrounding healthy tissue. Recently it has been demonstrated that this type of radiotherapy stimulates the immune system to attack the tumor. By combining stereotactic radiotherapy with TKIs we expect to observe a reduction of metastases in a bigger population of patients.
In the first part of our study we focus on the safety of the combination therapy. In the second part we will evaluate the combined treatment response.
Study Overview
Status
Status
Conditions
Conditions
Intervention / Treatment
Intervention / Treatment
Study Type
Study Type
Enrollment (Actual)
Enrollment
Phase
Phase
- Phase 2
- Phase 1
Contacts and Locations
Study Locations
-
-
Oost-Vlaanderen
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Ghent, Oost-Vlaanderen, Belgium, 9000
- Dept. of Radiotherapy, Ghent University Hospital
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-
Participation Criteria
Eligibility Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- signed informed consent
- diagnosis of RCC with clear-cell component histology
- at least 3 extracranial measurable metastatic lesions per RECIST
- Karnofsky Performance score >60
- patients should have undergone cytoreductive treatment of their RCC at least 6 weeks prior to inclusion
- patients should have adequate organ function for TKI treatment.
Exclusion Criteria:
- prior systemic treatment for RCC
- uncontrolled central nervous metastases
- prior radiotherapy interfering with SBRT
- any disorder precluding understanding of trial information.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Number of Arms
Arms and Interventions
Participant Group / ArmParticipant Group / Arm |
Intervention / TreatmentIntervention / Treatment |
|---|---|
|
Experimental: SBRT + fixed dose Tyrosine Kinase Inhibitor
Single arm phase I trial with 3 dose-escalation arms
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A first line TKI will be administered according to the standard dosing of the drug for metastatic RCC during a 1-week run-in period after which SBRT will be delivered to the largest metastatic lesion concurrently with the TKI.
The SBRT dose will be escalated in 3 dose levels, starting at 24Gy (8 Gy per fraction), followed by 30 Gy (10 Gy per fraction) and 36 Gy (12 Gy per fraction).
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What is the study measuring?
Primary Outcome Measures
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Dose limiting toxicity
Time Frame: 2 years
|
Dose limiting toxicity will be assessed before start of TKI, before SBRT, at the end of SBRT and at each follow-up visit
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2 years
|
Secondary Outcome Measures
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Response rate
Time Frame: 4 years
|
Response rate will be evaluated at 12 weeks following the start of TKI.
|
4 years
|
|
Immunomonitoring
Time Frame: 4 years
|
Immunomonitoring before start of TKI, before SBRT and 2 weeks after SBRT.
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4 years
|
Collaborators and Investigators
Sponsor
Sponsor
Investigators
Investigators
- Principal Investigator: Piet Ost, PhD, Dept. of Radiotherapy, Ghent University Hospital
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Study Start
Primary Completion (Actual)
Primary Completion
Study Completion (Actual)
Study Completion
Study Registration Dates
First Submitted
First Submitted
First Submitted That Met QC Criteria
First Submitted That Met QC Criteria
First Posted (Estimate)
First Posted
Study Record Updates
Last Update Posted (Estimate)
Last Update Posted
Last Update Submitted That Met QC Criteria
Last Update Submitted That Met QC Criteria
Last Verified
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
Other Study ID Numbers
- EC/2013/1087
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