Stereotactic Body Radiotherapy in Patients With Rare Oligometastatic Cancers (OligoRARE) (OligoRARE)

  • End date
    Feb 1, 2030
  • participants needed
  • sponsor
    European Organisation for Research and Treatment of Cancer - EORTC
Updated on 26 May 2022
systemic therapy
brain metastases


This is a randomized open-label multicentre Phase III superiority study of the effect of adding SBRT to the standard of care treatment on overall survival in patients with rare oligometastatic cancers.

Patients will be randomized in a 1:1 ratio between current standard of care treatment vs. standard of care treatment + SBRT to all sites of known metastatic disease.

The primary objective of this trial is to assess if the addition of stereotactic body radiotherapy (SBRT) to standard of care treatment improves overall survival (OS) as compared to standard of care treatment alone in patients with rare oligometastatic cancers.

Condition Gynecologic Cancer, Skin Cancer, Head and Neck Cancer, Sarcoma, Renal Cancer, Bladder Cancer, Upper Urinary Tract Carcinoma, Pancreatic Cancer, Hepatobiliary Cancer, Gastric Cancer, Small Bowel Cancer, Esophageal Cancer, Melanoma, Colon Cancer, Oligometastasis
Treatment Stereotactic body radiotherapy, Palliative RT
Clinical Study IdentifierNCT04498767
SponsorEuropean Organisation for Research and Treatment of Cancer - EORTC
Last Modified on26 May 2022


Yes No Not Sure

Inclusion Criteria

Histologically confirmed malignancy with metastatic disease detected on imaging. Biopsy of metastasis is preferred, but not required
Controlled primary tumour, defined as
at least 3 months since original tumour treated definitively, with no progression at primary site
Total number of oligometastases of 1-5 including
Brain metastases amenable to radiosurgery or fractionated stereotactic radiotherapy patient who had neurosurgical resection before trial inclusion are allowed and resected brain metastases count to the total number of oligometastases
All sites of disease can be safely treated based on the judgement of an experienced radiation oncologist
ECOG score 0-2
Life expectancy > 6 months
Age 18 or older
Before patient randomization, written informed consent must be given according to ICH/GCP, and national/local regulations

Exclusion Criteria

Primary cancer of prostate, breast, lung or colorectal
Serious medical comorbidities precluding radiotherapy
These include interstitial lung disease in patients requiring thoracic radiation, Crohn's disease in patients where the GI tract will receive radiotherapy, or ulcerative colitis where the bowel will receive radiotherapy and connective tissue disorders such as lupus or scleroderma
For patients with liver metastases, moderate/severe liver dysfunction (Child Pugh B or C)
Substantial overlap with a previously treated radiation volume. Prior radiotherapy in general is allowed, as long as the composite plan meets dose constraints herein. For patients treated previously with radiation, biological effective dose calculations should be used to equate previous doses to the tolerance doses listed in the RTQA Guidelines. All such cases should be discussed with one of the study coordinators
Brain metastases only, without extra-cerebral metastases
Malignant pleural effusion, malignant ascites, meningeal carcinomatosis and peritoneal carcinomatosis
Maximum size of 6 cm for lesions outside the brain, except
Bone metastases over 5 cm may be included, if in the opinion of the local radiation oncologist it can be treated safely (e.g. rib, scapula, pelvis)
Clinical or radiologic evidence of symptomatic spinal cord compression. Patients can be eligible if surgical resection has been performed, but the surgical site counts toward the total of up to 3 metastases
Metastatic disease that invades any of the following: GI tract (including oesophagus, stomach, small or large bowel), mesenteric lymph nodes, or disseminated skin metastases and lymphangiosis
Pregnant or breast feeding women
Any psychological, familial, sociological or geographical condition potentially hampering compliance with the study protocol and follow-up schedule; those conditions should be discussed with the patient before randomization in the trial
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