-Previous treatment with surgery and/or definitive radiation ≥2 years prior-1–3 oligometastatic tumours detectable on PSMA PET-Lesions must be amenable to SBRT to a dose of 9 Gy 3×-PSA ≥0.5ng/ml but ≤50 ng/ml. This evidence concerns the gene KLK3 and neoplasm.