RBS2418 for Advanced Colorectal Cancer

This study is evaluating RBS2418, a drug designed to boost your body's immune response against cancer, in people with advanced, metastatic (spread to other parts of the body), and progressive colorectal cancer. RBS2418 works by protecting a natural substance in your body (cGAMP) that helps activate immune cells. Researchers want to see if RBS2418, compared to a placebo (an inactive substance), is safe, well-tolerated, and can lead to anti-tumor effects. You may be eligible if you are at least 18 years old and have colorectal cancer that has progressed after, or if you cannot receive, standard treatments. The main goals are to see how long people live without their cancer getting worse (progression-free survival) and how long they live overall (overall survival), both measured for up to two years.

Study design
This is an interventional study with a planned enrollment of 150 participants. Participants will receive either RBS2418 or a placebo.
What's involved
Participants will receive study treatment in 21-day cycles for up to two years, or until their disease progresses, they withdraw, or the study ends. Adverse events will be monitored throughout and after treatment.
Compensation
Not stated in the trial record.
Follow-up
Adverse events will be collected for up to 30 days after treatment, and serious adverse events for 90 days after treatment or 30 days after starting new anti-cancer therapy.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.

NCT06824064

Evaluation of RBS2418 in Patients With Advanced, Metastatic, and Progressive Colorectal Cancer

Recruiting
PHASE2Ages 18+InterventionalTreatment
Riboscience, LLC.
~150 participants
Updated 2026-05-18 on ClinicalTrials.gov
What's tested:RBS2418Placebo

At a glance

Recruiting sites
5 of 5 listed sites are recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Progression Free Survival
Measured over From randomization until the first radiographic documentation of objective progression or death from any cause, assessed up to 2 years.
+1 more outcome measured
Metastatic Colorectal Cancer
Advanced Colorectal Cancer
5 sites across 5 states
Delaware1
Texas1
Puerto Rico1
Ho Chi Minh City1
Vietnam1

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Eligibility criteria

Exclusion

Palliative radiotherapy for bone metastases or soft tissue lesions should be completed \>7 days prior to the first dose of study treatment.
Hormone-replacement therapy or oral contraceptives.
Subjects with Grade 2 neuropathy or Grade 2 alopecia. 2. Subjects with evidence of rapid progression on prior therapy resulting in rapid clinical deterioration. 3. Malignancies other than indications open for enrollment within 3 years prior to Day 1, except for those with negligible risk of metastasis or death treated with expected curative outcome, undergoing active surveillance, or treatment-naïve for indolent tumors.
  • Progression Free SurvivalFrom randomization until the first radiographic documentation of objective progression or death from any cause, assessed up to 2 years.

    Time in months from randomization until the first radiographic documentation of objective progression, as assessed using Response Evaluation Criteria in Solid Tumors (RECIST) 1.1, or death from any cause

  • Overall SurvivalFrom randomization until death from any cause, assessed up to 2 years.

    Time in months from the date of randomization to the date of death from any cause