An interventional study of Ablative local therapy in Small Bowel Cancer, Colorectal Cancer and Appendiceal Cancer, sponsored by University of California, Davis. Recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-07-02.
Sponsored by University of California, Davis · Not applicable, Interventional, and Treatment
This is a phase 2 pragmatic study that evaluates the clinical benefit of continuing systemic therapy with the addition of locally ablative therapies for oligo-progressive solid tumors as the primary objective. The primary outcome measure is the time to treatment failure (defined as time to change in systemic failure or permanent discontinuation of therapy) following locally ablative therapy.
This is a phase 2 pragmatic study at a single site that evaluates the clinical benefit of continuing systemic therapy with the addition of locally ablative therapies for oligo-progressive solid tumors as the primary objective. The primary endpoint is disease control at 3 months, defined as continuation in systemic cancer therapy without any changes or permanent discontinuation for 3 months following first day of ablative local therapy. Participants will receive ablative local therapy per standard practices in addition to their systemic therapy and will be followed for up to 5 years following ablative local therapy. Participants will be assigned stereotactic ablative radiotherapy (SABR) or interventional radiology (IR) ablation therapy per the discretion of treating radiation oncologist and/or interventional radiologist.
6,541 studies on the registry are indexed under Colorectal Neoplasms; 1,667 are open to participants now.
This study's planned enrollment of 300 is above the median of 76 across 4,800 interventional studies indexed under Colorectal Neoplasms.
Browse Colorectal Neoplasms studies →University of California, Davis is the lead sponsor of 809 studies on the registry; 142 are open to participants now.
Of its 67 completed or terminated interventional studies of FDA-regulated products, 43 (64%) have results posted.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Must have one of the following histologically and/or biochemically confirmed cancers:
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
A line of therapy is one course of treatment, which may combine several drugs. First-line is the first course given; second-line follows when that stops working or is not tolerated.
“Two prior lines” means two courses that count separately under the study’s rules — not simply two drugs. Ask the study team if you are unsure how yours are counted.
Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Line of therapy
A line of therapy is one course of treatment, which may combine several drugs. First-line is the first course given; second-line follows when that stops working or is not tolerated.
“Two prior lines” means two courses that count separately under the study’s rules — not simply two drugs. Ask the study team if you are unsure how yours are counted.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Metastases
Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Stereotactic ablative radiotherapy (SABR) or interventional radiology (IR) ablation therapy
Device: Ablative local therapy
Stereotactic ablative radiotherapy (SABR) or interventional radiology (IR) ablation therapy
Number of participants with controlled disease
Number of participants with controlled disease at 3 months, defined as continuation in systemic cancer therapy without any changes or permanent discontinuation for 3 months following first day of ablative local therapy
Time frame: 3 months from the first day of ablative local therapy
Number of participants experiencing grade ≥ 3 adverse events attributable to ablative local therapy
Number of participants experiencing grade ≥ 3 adverse events (except for hematologic and electrolyte abnormalities) attributable to ablative local therapy occurring up to 2 years from the first day of ablative local therapy
Time frame: Up to 2 years from the first day of ablative local therapy
Median overall survival
Median overall survival stratified by primary tumor type
Time frame: Up to 5 years from the first day of ablative local therapy
Time to treatment failure
Time to treatment failure, defined as time to change in systemic therapy or permanent discontinuation of cancer therapy
Time frame: Up to 1 year from the first day of ablative local therapy
Started Oct 2023 (actual). Primary completion is estimated for Dec 2033, 122 months after the start.
Of 898 non-industry interventional studies with no phase under Colorectal Neoplasms, half reached primary completion within 32 months of starting (the median), counting those still running; a quarter within 15 and three quarters within 62. This study's planned 122 months is above that.
Counting every sponsor, half of 955 studies reached it within 32 months; a quarter within 14 and three quarters within 60.
How these figures are worked out, and which studies are left out of them.
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