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Systemic Therapy Alone or With Stereotactic Body Radiotherapy for Oligometastatic Kidney Cancer (STROKER Study)

Systemic Therapy Combined With Radiotherapy Versus Systemic Therapy Alone for Oligometastatic Kidney CancER (STROKER): A Multicenter, Randomized Controlled Phase III Trial

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06726421
Acronym
STROKER
Enrollment
252
Registered
2024-12-10
Start date
2024-09-18
Completion date
2033-09-30
Last updated
2026-01-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Kidney Cancer Metastatic, Renal Cell Carcinoma (Kidney Cancer), Renal Cell Carcinoma Metastatic

Keywords

radiotherapy, SBRT, SABR, oligometastatic, oligometastasis

Brief summary

This phase III randomized controlled trial evaluates the efficacy of stereotactic body radiation therapy (SBRT) in oligometastatic renal cell carcinoma. The study aims to determine if the addition of SBRT to standard systemic therapy prolong survival compared to the standard systemic therapy alone. In addition, the study will explore the impact of this combined modality therapy on patients' toxicity and quality of life. The researchers will compare SBRT plus standard systemic therapy to standard systemic therapy alone, which is targeted agents and immunotherapy in this case, to determine if SBRT could prolong survival.

Detailed description

PRIMARY OBJECTIVES: To compare the progression-free survival (PFS) between patients receiving SBRT + standard systemic therapy versus standard systemic therapy alone. SECONDARY OBJECTIVES: I. To compare the overall survival (OS) between patients receiving SBRT + standard systemic therapy versus standard systemic therapy alone. II. To compare the cancer specific survival (CSS) between patients receiving SBRT + standard systemic therapy versus standard systemic therapy alone. III. To estimate the local control (LC) rate of SBRT. IV. To compare the post-treatment progression-free survival (post-treatment PFS) between patients receiving SBRT + standard systemic therapy versus standard systemic therapy alone. V. To evaluate treatment-related toxicity after adding SBRT based on patient-reported outcomes and researcher reported adverse events. VI. To compare the quality of life between patients treated with SBRT or not using EQ-5D-5L, FKSI-DRS and FKSI-19. OUTLINE: Patients are randomized to either Control arm or SBRT arm. Control arm: Patients receive standard of care systemic therapy on study. SBRT arm: Patients undergo SBRT to all metastatic sites in addition to standard of care systemic therapy on study. Patients periodically receive computed tomography (CT), positron emission tomography (PET)/CT, and/or magnetic resonance imaging (MRI) throughout the trial.

Interventions

RADIATIONStereotactic body radiotherapy (SBRT)

The preferred treatment plan is SBRT with a fraction dose ≥7 Gy. The prescription dose should ensure a BED of no less than 115. Radiotherapy is usually delivered daily, every other day, or other interval decided by treating radiation oncologist.

DRUGaxitinib ± immune checkpoint inhibitors (ICIs), lenvatinib ± ICIs, cabozantinib ± ICIs, sunitinib and pazopanib

Standard systemic therapy are targeted agents or their combination with immunotherapy recommended by guidelines. This may include axitinib ± immune checkpoint inhibitors (ICIs), lenvatinib ± ICIs, cabozantinib ± ICIs, sunitinib and pazopanib, etc.

Sponsors

Sun Yat-sen University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Pathologically confirmed diagnosis of renal cell carcinoma of any histology * Age ≥ 18 years. * ECOG performance status of 0-2. * Imaging suggests the presence of distant metastases, with no more than 5 metastatic lesions according to RECIST 1.1 criteria and MDA standards. * The patient has received local therapy to primary site, including surgery, stereotactic radiotherapy, or ablation. * The patient has received no more than 2 lines of systemic therapy. * No significant impairment of major organ function: Hemoglobin (HB) ≥ 80 g/L Absolute neutrophil count (ANC) ≥ 1.5 × 10⁹/L Platelets (PLT) ≥ 75 × 10⁹/L Serum total bilirubin ≤ 1.5 × ULN Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤ 3 × ULN Prothrombin time (PT) and activated partial thromboplastin time (aPTT) ≤ 1.5 × ULN

Exclusion criteria

* Presence of intracranial metastases. * Target lesions have previously received high-dose irradiation with . * Target lesions are unsuitable for radiation therapy judged by treating radiation oncologist (e.g., lesions invading the gastrointestinal tract or penetrating the bronchus). * Uncontrollable metastatic pleural effusion or ascites. * Presence of other malignancies that have not been cured. * History of significant psychiatric disorders that impede understanding of informed consent and compliance with the study protocol. * Presence of other serious illnesses that may pose significant risks or affect radiation therapy. * Women who are pregnant, breastfeeding, or with plans for childbearing during the study. * Any other reasons deemed by the investigator to make the subject unsuitable for participation in the study.

Design outcomes

Primary

MeasureTime frameDescription
Progression free survivalFrom enrollment to disease progression, up to 5 yearsthe time from randomization to the first occurrence of tumor progression or death. If no progression occurs, PFS is measured up to the date of the last follow-up.

Secondary

MeasureTime frameDescription
Post-treatment progression free survivalFrom the initiation of systemic treatment to disease progression, up to 5 yearsThe time from the initiation of systemic treatment for metastasis to the first occurrence of tumor progression or death after enrollment. If no progression occurs, it is measured up to the date of the last follow-up.
Progression-free survival 2From the initiation of systemic treatment to disease progression, up to 5 yearsDefined as the time from randomization to progression on the next-line treatment or death from any cause.
Overall survivalFrom enrollment to death from any cause, up to 5 yearsThe time from randomization to death from any cause. If no death occurs, OS is measured up to the date of the last follow-up.
Cancer specific survivalFrom enrollment to death from cancer, up to 5 yearsthe interval from randomization to death caused by renal cancer. If no death occurs, it is measured up to the date of the last follow-up.
Local control rateFrom enrollment to in-field progression, up to 5 yearsThe interval from randomization to progression of each SBRT treatment lesion. If no progression occurs, it is measured up to the date of the last follow-up.
Patient-Reported Adverse EventsUp to 2 yearsAdverse events will be selected from the patient-reported outcomes (PRO) scoring system developed by the National Cancer Institute (NCI) for toxic events (specifically, the NCI PRO-CTCAE™ ITEMS Chinese version). These items will be provided to patients, who will self-assess and report any adverse events experienced during each treatment cycle.
Health-related quality of life by EQ-5D-5LUp to 2 yearsThe overall quality of life will be evaluated using the European Quality of Life 5-Dimension 5-Level (EQ-5D-5L) scale.
Health-related quality of life by FSKIUp to 2 yearsFor assessing quality of life related to advanced kidney cancer, the Functional Assessment of Cancer Therapy - Kidney Cancer Symptom Index (FKSI), developed by the American Outcomes Research and Education Center, will be utilized, which includes both the FKSI-DRS and FKSI-19 scales.
Incidence of Adverse EventsUp to 2 yearsAdverse events need to be grouped and analyzed based on treatment-related events, including all grades and grades 3-4 events. Adverse events are assessed by investigators according to the Common Terminology Criteria for Adverse Events (CTCAE) version 5.0.

Countries

China

Contacts

Primary ContactLiru He, PhD
helir@wy.sysucc.org.cn0086-13631365597
Backup ContactFangjian Zhou, PhD
zhoufj@wy.sysucc.org.cn0086-13922735659

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026