Radiotherapy Combined with Systemic Therapy Versus Systemic Therapy for Oligometastatic UTUCs
Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age18-80
SponsorPeking University First Hospital
About this trial
This study was a prospective, open-label, phase II randomised controlled clinical study, enrolling patients with primary oligometastatic uroepithelial carcinoma, oligometastasis was defined as ≤3 organs, and the number of metastatic lesions and size of metastases were not restricted to be able to satisfy the definition of full-coverage radiotherapy, with the exception of patients with brain metastases and more than 3 liver metastases.
If regional lymph node recurrence was present, all positive regional lymph nodes were collectively referred to as one lesion. Non-regional lymph node metastases were counted as the number of metastases by lymph node subregion.
Patients were divided into two groups according to whether they received radiotherapy or not: 1) systemic therapy group; 2) systemic therapy + radiotherapy group. Systemic drug therapy can be chosen from chemotherapy or immune checkpoint inhibitor therapy, or combination therapy.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Patients with metastatic uroepithelial cancer with histologically confirmed diagnosis (pathologically confirmed primary focus or one of the metastatic foci is sufficient) (metastasis after total cystectomy, metastasis after full-length nephroureteral resection, or metastatic uroepithelial cancer of the pelvic-ureteral bladder at the first diagnosis of inoperable metastatic uroepithelial cancer).
Oligometastases were defined as ≤3 organs, and the number and size of metastatic lesions were not restricted to the extent that full-coverage radiotherapy could be met. If regional lymph node recurrence was present, all positive regional lymph nodes were collectively referred to as one lesion. Non-regional lymph node metastases are counted as metastases by lymph node subregion.
Willing and able to provide written informed consent/assent for the trial; age ≥18 years on the date of signing the informed consent form and patient age ≤80 years.
Expected survival time ≥ 6 months;
Disqualifiers
Pathological type non-urothelial carcinoma;
Patients with brain metastases and >3 liver metastases; patients with spinal bone metastases at risk of spinal cord compression; patients with pericardial, pleural or abdominopelvic fluid;
Patients who are intolerant to or have had a reduction in systemic therapy; patients with tumour progression assessed after 2 cycles of systemic therapy.
Trial design
Design model
Parallel
Treatments tested in this trial
Systematic therapy combined with radiotherapy
RadiationSystematic medical therapy is same as the systematic treatment group. SBRT radiotherapy or conventional fractionated radiotherapy can be used according to the extent and size of the metastatic foci. SBRT radiotherapy is preferred, and a higher dose should be given as far as possible when the normal tissues permit, with a preferred single dose of ≥5Gy.
Systematic drug treatment
DrugThe choice of first-line treatment is based on the guidelines, and may include chemotherapy or immune checkpoint inhibitors, or a combination of therapies. For patients who can tolerate cisplatin, chemotherapy is given with the gemcitabine-cisplatin regimen, as follows: gemcitabine 1000mg/m2 d1,8; cisplatin 70 mg/m2, avoiding light, intravenous drip d2; 3 weeks for 1 cycle. For intolerant patients, the gemcitabine-carboplatin regimen is given as follows: gemcitabine 1000 mg/m2 d1,8, IV, carboplatin (4.5×\[GFR+25\]) mg, IV, d1; 3 weeks as 1 cycle. Immune checkpoint inhibitors and targeted agents may be administered if the patient does not tolerate chemotherapy; either in combination with chemotherapy or directly as first line.
Treatment groups
102 Participants
are divided into 2 treatment groupsGroup A: Systemic treatment groupActive comparator 1 intervention
Group B: Systemic treatment combined with radiotherapy groupExperimental treatment 1 intervention
Trial outcomes
Primary outcomes
1
PFS
Tumour progression-free survival
Time frame
1-year, 3-year and 5-yearSecondary outcomes
1
OS
Overall survival
Time frame
1-year, 3-year and 5-year2
Adverse effect
Adverse effect related to the therapies
Time frame
1 month after the start of treatment until the end of treatment3
ORR
Oncological response rate
Time frame
1-3 months after starting treatmentSponsors and contacts
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Source ClinicalTrials.gov