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Exploratory study of PULSAR radiotherapy concurrent with apalutamide and toripalimab combined with TAS-102 for the treatment of liver metastases from pMMR/MSS colorectal cancer in the third-line or higher settings

Exploratory study of PULSAR radiotherapy concurrent with apalutamide and toripalimab combined with TAS-102 for the treatment of liver metastases from pMMR/MSS colorectal cancer in the third-line or higher settings

Status
Active, not recruiting
Phases
Early Phase 1
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2600124345
Enrollment
Unknown
Registered
2026-05-11
Start date
2026-05-11
Completion date
Unknown
Last updated
2026-05-18

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

Conditions

pMMR/MSS colorectal cancer

Interventions

Experimental group:Olverembatinib 5.0mg/kg, intravenous infusion, D1, repeat every 3 weeks, maximum use for 2 years. TAS-102, 35mg/m^2, oral administration on days 1-5 and 15-19, twice daily, repeat e

Sponsors

Second Affiliated Hospital of Nanchang University
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 75 Years

Inclusion criteria

Inclusion criteria: 1. Age 18-75 years, no gender limit; 2. Patients with pathologically confirmed, unresectable advanced colorectal cancer liver metastases who have received at least two lines of progression or are intolerant to standard treatment drugs such as oxaliplatin, irinotecan, and fluoropyrimidines for colorectal cancer; 3. Genomic microsatellite molecular typing is microsatellite stable (MSS/pMMR). 4. The number of liver metastases is >=3, and radical resection is not feasible; 5. Child-Pugh score of liver function =12 weeks; 9. Normal major organ function (within 14 days before enrollment), i.e., meet the following criteria: Hematological examination criteria should be met (no blood transfusion or granulocyte colony-stimulating factor treatment within 14 days before enrollment): Hemoglobin (HB) >=90 g/L; Neutrophils (ANC) >=1.0×10^9/L; Platelets (PLT) >=50×10^9/L; No functional organic disease, which must meet the following criteria: Serum total bilirubin =3g/dL; serum creatinine level: Cr =40ml/min and Cr >1.5×ULN; urine protein =2+, then 24-hour urine protein must be <2g, or the urine protein-to-creatinine ratio (UPC) must be <2; international normalized ratio (INR), activated partial thromboplastin time (aPTT): <=1.5×ULN; 10. Women of childbearing age must have already adopted reliable contraceptive measures or have undergone a pregnancy test (serum or urine) within 7 days before enrollment, with negative results, and be willing to use appropriate contraceptive methods during the trial and for 8 weeks after the last administration of the trial drug. For men, they must agree to use appropriate contraceptive methods during the trial and for 8 weeks after the last administration of the trial drug or have undergone surgical sterilization; 11. Subjects voluntarily join this study, sign informed consent forms, adhere well to the protocol, and cooperate with follow-ups.

Exclusion criteria

Exclusion criteria: 1. Clinical effusions requiring drainage, such as pleural effusion, ascites, and pericardial effusion; 2. Previously received PD-1 or CTLA-4 inhibitor treatment before enrollment; 3. Presence of central nervous system metastasis or coexistence of other primary tumors; 4. Patient unable to lie flat or unable to cooperate with lying flat for 10-20 minutes during radiotherapy; 5. Presence of uncontrolled cardiac clinical symptoms or diseases, such as: a. NYHA class II or higher heart failure; b. unstable angina; c. myocardial infarction within the past year; d. clinically significant supraventricular or ventricular arrhythmias requiring treatment or intervention; 6. Severe or uncontrolled infection; 7. Severe active bleeding, severe arterial or venous thrombotic events, gastrointestinal obstruction or perforation requiring urgent treatment; 8. Received major surgical treatment, incisional biopsy, or significant trauma within 28 days prior to treatment; 9. Individuals requiring immunosuppressive therapy for organ transplantation and those on long-term steroid therapy; 10. Patients with autoimmune diseases; 11. Individuals with a history of allergy to any of the study medication components. 12. According to the researcher's judgment, there are serious accompanying diseases that pose a significant risk to the safety of the subjects or affect their ability to complete the clinical study; 13. According to the researcher's judgment, the subject has other factors that could lead to the premature termination of this study, such as other severe diseases (including mental illnesses) requiring combined treatment, serious laboratory test abnormalities, or family or social factors that could affect the safety of the subjects or the collection of data and samples.

Design outcomes

Primary

MeasureTime frame
PFS, Progression Free Survival;disease control rate, DCR;Safety;

Secondary

MeasureTime frame
Overall Survival, OS;Objective response rate, ORR;

Countries

China

Contacts

Public ContactWang Hua

Second Affiliated Hospital of Nanchang University

1571007412@qq.com+86 136 6709 8735

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: May 22, 2026