This prospective study aims to investigate the efficacy and safety of peritumoral injection of the oncolytic virus H101 in combination with stereotactic body radiotherapy (SBRT), PD-1 monoclonal antibody, chemotherapy, and targeted therapy for the treatment of patients with unresectable, microsatellite stable/mismatch repair proficient (MSS/pMMR) colorectal adenocarcinoma liver metastases. The ultimate goal is to provide high-level evidence-based medical support for this combined modality approach.
Who can participate
Age range
18 Years – 75 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion criteria
. The patient or their legal representative understands and signs the informed consent form.
. Patients with pMMR/MSS colorectal adenocarcinoma.
. Aged 18-75 years.
. Patients with histologically or cytologically confirmed colorectal cancer liver metastases. There must be at least one injectable lesion in the liver, which must also meet the criteria for a measurable target lesion according to RECIST version 1.1 (≥10 mm in the longest diameter on spiral CT/MRI scan with a slice thickness of no greater than 5 mm).
. Patients with definitively unresectable metachronous liver metastases; OR patients deemed surgically resectable but who refuse surgery, provided the liver metastases meet the following requirements: ① The number of metastatic lesions must be no more than 5, and the sum of the longest diameters of all metastatic lesions must be ≤100 mm; ② The longest diameter of a single lesion must be ≤100 mm; ③ The longest diameter of the lesion to be injected must be ≥10 mm and ≤80 mm.
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
. The liver metastases have not received prior radiotherapy, OR the area of the liver near the planned radiotherapy site has not been previously irradiated. At least 700 cc of liver volume must be preserved outside the treatment area.
. Prior treatments such as hepatic resection, systemic chemotherapy, local ablation therapy, or hepatic artery infusion pump chemotherapy are allowed, provided a washout period of 2 weeks is observed. Patients must have recovered from prior anti-tumor therapy-related adverse events to baseline or Grade ≤1 (according to CTCAE version 5.0) (excluding alopecia and Grade 2 anemia).
. Child-Pugh score A or B
Exclusion criteria
. Synchronous colorectal cancer liver metastases.
. Active hepatitis, cirrhosis, or Child-Pugh class C.
. Extralepatic metastases to: central nervous system / bone marrow / brain (UICC 8th edition).
. Liver metastases not measurable.
. Prior history of oncolytic virus therapy (e.g., T-VEC).
. Liver metastases not meeting the requirements for peritumoral injection volume or unsuitable for peritumoral injection.
. History of severe drug allergy (e.g., to oncolytic adenovirus, PD-1 monoclonal antibody, platinum agents, 5-FU, leucovorin, 5-HT3 receptor antagonists, bevacizumab, etc.).
. Antiviral therapy (e.g., acyclovir, ganciclovir, valacyclovir, vidarabine) within 4 weeks prior to the first dose of study treatment.