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A multicenter phase II randomized trial to evaluate systemic therapy versus systemic therapy in combination with stereotactic radiotherapy in patients with metastatic colorectal cancer

A multicenter phase II randomized trial to evaluate systemic therapy versus systemic therapy in combination with stereotactic radiotherapy in patients with metastatic colorectal cancer - SIRIUS

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
NL-OMON
Registry ID
NL-OMON52282
Enrollment
105
Registered
2022-02-17
Start date
2022-03-11
Completion date
Unknown
Last updated
2026-08-10

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

Conditions

Bowel cancer colon cancer rectum cancer

Interventions

SBRT on all metastatic sites followed by maintenance treatment.

Sponsors

Universitair Medisch Centrum Utrecht
Lead Sponsor

Eligibility

Age
18 Years to 99 Years

Inclusion criteria

Inclusion criteria: - Histological proof of colorectal carcinoma (CRC) - Colorectal metastatic disease - Ten or less metastases as determined by the UCMU central review - Stable disease or partial response after induction chemotherapy according to RECIST 1.1 criteria - Written informed consent For all in- and exclusion criteria we want to refer to chapter 4 of the protocol.

Exclusion criteria

Exclusion criteria: - Possible treatment with curative intent according to local tumor board - Substantial overlap with a previously treated radiation volume. Previous radiotherapy is allowed as long as the composite plan meets dose constraints herein. - Contra-indication MR-LINAC (pacemaker or implantable cardioverter-defibrillator) For all in- and exclusion criteria we want to refer to chapter 4 of the protocol.

Design outcomes

Primary

MeasureTime frame
Lead-in: Feasibility, based on technical feasibility, logistical feasibility and patient acceptance (details are provided in the protocol) Phase II: Progression free survival. Defined as the time from randomization until progression of disease or death, whichever occurs first.

Secondary

MeasureTime frame
Lead-in: Secondary outcome: Grade II adverse events of specific interest and grade III/IV adverse events. Phase II: Overall survival, objective response rate of SBRT, time to disease related treatment failure, health related quality of life, depth of response, pattern of recurrence, treatment success rate, grade II adverse events of specific interest and grade III/IV adverse events of SBRT and fatigue measurements by MFI-20.

Countries

Netherlands

Outcome results

None listed

Source: NL-OMON (via WHO ICTRP) · Data processed: Aug 25, 2026