Metastatic kidney cancer patients on systemic therapy often develop resistance to limited sites that leads to changing of the systemic therapy. Local therapy to the sites of progression may allow patients to continue on the same systemic therapy that is otherwise effective and being tolerated well. Hypothesis: Stereotactic ablative radiation (SAbR) can delay the change of systemic therapy with oligoprogressive renal cell cancer (RCC) and improve progression free survival (PFS). Primary Objectives: • To evaluate the benefit of SAbR for oligo-progressive mRCC (Metastatic Renal Cell Cancer). Secondary Objectives: • To measure the toxicity, safety and tolerance of concurrent systemic therapy and SAbR for mRCC patients and its impact on quality of life.
The study is a prospective phase II, single arm, open label trial evaluating Stereotactic Ablative Radiation Therapy (SAbR) for patients with oligo-progressive RCC (Renal Cell Cancer). Problem Statements: * Can local therapy (SAbR) for oligoprogression delay the change of systemic therapy if progression is minimal to the progressive sites? * Safely delaying the change of systemic therapy can have significant quality of life benefits for patients with oligo-progressive RCC. * Can SAbR potentially improve progression free survival in oligoprogressive RCC patients? Primary Endpoint: • Time to change of systemic therapy. Secondary Endpoint: * PFS on subsequent systemic therapy (PFS-SST) after progression on SAbR. * Overall survival(OS). * Toxicity, safety and tolerance. * Impact on health-related quality of life (HRQoL). Sample Size: 20 Patients Statistical Analysis: Time to event will be estimated using the Kaplan-Meier approach along with the 95% confidence interval.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
21
SAbR treatment regimens including ≥25Gy x1 fraction, ≥12Gy x 3 fractions, or ≥8Gy x 5 fractions.
University of Texas Southwestern Medical Center
Dallas, Texas, United States
Time to change of systemic therapy
SAbR for oligo-progression will be measured to delay the change of systemic therapy.
Time frame: 2 Years
Progression-free survival (PFS)
Progression-Free Survival on systemic therapy started (PFS-ST) after progression on SAbR with existing or new progression at \>3 or \>30% of all lesions.
Time frame: 6 years
Overall survival
Overall Survival (OS), which is defined as the time between date of registration and the date of death due to any cause.
Time frame: 6 Years
Number of participants with adverse events
Severity or Toxicity will be assessed according to the National Cancer Institute (NCI) Common Toxicity Criteria for Adverse Events (CTCAE), version 5.0. The consequences of toxicity should all be graded 1-5 according to the Common Terminology Criteria for Adverse Events (CTCAE), version 5.0.
Time frame: 6 Years
Health-related quality of life (HRQOL)
HRQoL will be measured using Functional Assessment of Cancer Therapy (FACT-G)questionnaire. The FACT-G is a 28-item questionnaire that uses 5-point Likert-type response choices (0 = not at all; 1 = a little bit; 2 =somewhat; 3 = quite a bit; 4 = very much). Possible scores range from 0-4, where higher scores indicate better outcome.
Time frame: 6 Years
Health-related quality of life (HRQOL)
HRQoL is measured using EuroQoL- 5 Dimension (EQ-5D) questionnaire. EQ-5D is a patient self-administrated questionnaire. The first part consists of 5 items covering 5 dimensions including: mobility, self care, usual activities, pain/discomfort, and anxiety/depression. Each dimension can be graded on 3 levels: 1-no problems, 2-moderate problems, and 3-extreme problems. Health states are defined by the combination of the leveled responses to the 5 dimensions, generating 243 health states to which unconsciousness and death are added. The 5-item index score is transformed into a utility score between. Possible scores range from 0-1, where higher score indicates better outcomes ( 0 ="Worst health state," and 1="Best health state." )
Time frame: 6 years
Quality of life (QOL)
HRQoL will be measured using Kidney Symptom Index (FKSI) questionnaire. FKSI is a 15 question validated symptom index for kidney cancer patients that uses 5-point Likert-type response choices (0 = not at all; 1 = a little bit; 2 =somewhat; 3 = quite a bit; 4 = very much). Possible scores range from 0-4, where higher scores indicate better outcome.
Time frame: 6 years
Quality of life with cost involved
QOL will be measured using Cost \& Convenience Questionnaire. This outcome measure will not be used and data will not be collected or analyzed because of a protocol amendment Version 4 approved on 06/26/2020.
Time frame: 6 years
Local control
Radiographic progression with \>20% increase in the longest diameter of the treated lesions. This outcome measure will not be used and data will not be collected or analyzed because this outcome measure was added in error at the time of the initial registration.
Time frame: 6 years
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