This phase III trial compares the effect of stereotactic ablative radiotherapy (SAbR) followed by standard of care systemic therapy, to standard of care systemic therapy alone, in patients with renal cell carcinoma or RCC (the most common type of kidney cancer) that has spread from where it first started (primary site) to a limited number of places in the body (metastatic). There are patients with metastatic RCC who have limited metastatic disease (oligometastatic). In patients with advanced oligometastatic disease, radiation therapy as a local treatment of metastatic lesions may be beneficial (without systemic therapy and associated toxicity and costs). Previous small-scale studies have demonstrated that SAbR alone can control oligometastatic RCC for some time, which may be comparable to the control afforded by systemic therapies. However, to confirm this finding, larger scale studies like this must be performed to check whether SAbR can become a standard option for such patients in the future. Radiotherapy uses high energy x-rays to kill cancer cells and shrink tumors. SAbR is a type of external radiation therapy that uses special equipment to position a patient and precisely deliver radiation to tumors in the body (except the brain). The total dose of radiation is divided into smaller doses given over several days. This type of radiation therapy helps spare normal tissue. SAbR may allow patients to live longer with better quality of life. SAbR may delay or possibly eliminate the need for systemic therapy and its more serious side effects. Giving SAbR prior to systemic therapy may kill the tumor cells more efficiently than the usual approach with systemic therapy alone.
Additional locations may be listed on ClinicalTrials.gov for NCT05863351.
See trial information on ClinicalTrials.gov for a list of participating sites.
PRIMARY OBJECTIVES:
I. To compare overall survival (OS) between patients receiving SAbR + systemic therapy (SABR+ST) versus systemic therapy (ST) only.
II. To compare average adverse event (AE) score between SAbR+ST arm and ST only arm.
SECONDARY OBJECTIVES:
I. To compare global health status / quality of life (QOL) between patients receiving SAbR+ST versus ST only.
II. To compare progression-free survival (PFS) between the arms.
EXPLORATORY OBJECTIVES:
I. To estimate PFS on first line systemic therapy (PFS-SST) in the SAbR+ST arm and compare with first line systemic therapy PFS of the ST arm.
II. To explore local control from SAbR by looking at the amount of local failures after SAbR in the SAbR+ST arm.
III. To assess the cost-effectiveness between the arms in terms of cost per unit gain in quality-of-life years.
QUALITY OF LIFE (QOL) OBJECTIVES:
I. To compare global health status / quality of life (QOL) between patients receiving SabR+ST versus ST only using the National Comprehensive Cancer Network (NCCN) / Functional Assessment of Cancer Therapy Kidney Cancer Symptom Index -19 item (NFKSI-19).
II. To compare quality-adjusted survival between patients randomized to receive SabR+ST versus ST alone using European Quality of Life (EUROQOL) 5-dimension, 5-level (EQ-5D-5L) at 3, 6, 9, 12, 18, and 24 months.
III. To compare global health status / QOL of the NFKSI-19 at all of the 3, 6, 9, 12, 18, and 24 month time points between patients randomized to receive SabR+ST versus ST alone.
IV. To compare scale scores of the NFKSI-19 (disease-related symptoms - physical disease-related symptoms - emotional, treatment side effects, and function & well-being) at 3, 6, 9, 12, 18, 24 months between patients randomized to receive SabR+ST versus ST alone.
V. To compare time to global quality of life deterioration between patients randomized to receive SabR+ST versus ST alone using NFKSI-19.
OUTLINE: Patients are randomized to 1 of 2 arms.
ARM I: Patients receive standard of care systemic therapy at the discretion of the treating provider on study.
ARM II: Patients undergo sequential SAbR until progression and then receive standard of care systemic therapy at the discretion of the treating provider on study.
Patients in both arms undergo computed tomography (CT) or magnetic resonance imaging (MRI) throughout the trial.
After completion of study intervention, patients are followed up every 3 months for years 1 and 2, every 6 months for years 2-5, and then every 12 months for years 5-10 from the date of randomization.
Lead OrganizationECOG-ACRIN Cancer Research Group
Principal InvestigatorRaquibul Hannan