Critères d'inclusion : - Clear cell renal cancer histologically proved (association with other histologic component are permitted)
- Patients of good or intermediate prognostic, according to Heng criteria
- Extracerebral metastatic disease documented with imagery
- Patients treated in first or second line systemic therapy
- Systemic treatment may be targeted therapies (tyrosine kinase inhibitors or mammalian target of rapamycin inhibitors) and/or immunotherapy according to French applicable standards; patients treated in a clinical trial are also eligible if allowed by trial sponsor
- Oligoprogressive disease documented with imagery, defined as the emergence or progression of 1 to 3 metastases and progression localized in up to 2 organs
- Oligoprogressive disease confirmed with 2 CT scans performed 2 months apart
- At least one measurable progressing metastasis according to R.E.C.I.S.T. criteria v1.1
- All oligoprogressive target lesions measuring ≤ 4 cm
- Good general condition (WHO performance status ≤ 2)
- All progressive lesions have to be accessible to SRT, performed concurrently or sequentially
- No contraindication to systemic therapy and stereotactic radiation therapy
- Patients aged 18 years or older
- Signed informed consent form
- Patients affiliated to the social security system
Critères de non-inclusion : - -More than 3 progressive metastases
- Non measurable disease according R.E.C.I.S.T. criteria
- Patients who received 3 or more lines of systemic therapy
- Inability to treat all progressive metastatic sites with SRT
- Previous radiation therapy performed in ≥ 1 target lesion
- At least 1 oligoprogressive target lesion measuring > 4 cm
- Presence of brain metastases
- Presence of ultra-central pulmonary metastasis
- Progressing metastasis in a long bone
- At least 1 progressive metastasis requiring surgical treatment
- Current or past history of second neoplasm diagnosed within the last 5 years
- Pregnancy or breast feeding or inadequate contraceptive measures
- Patients who cannot be adequately followed up
- Patient deprived of freedom or under guardianship