NCT04184973 · Colospan Ltd.
Efficacy and Safety of the CG-100 Intraluminal Bypass Device
What this study is about
A randomly assigned trial to assess the safety and effectiveness of CG-100 for reducing stoma creation rate in subjects undergoing mesorectal excision.
View original scientific description
A randomized trial to assess the safety and efficacy of CG-100 for reducing stoma creation rate in subjects undergoing mesorectal excision.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- The patient is willing to comply with protocol-specified follow-up evaluations
- Patient 22-65 years of age at screening, or patient 66-70 years of age at screening with up to one cardiovascular, metabolic or pulmonary comorbidity for which medication is prescribed.
- Patient is diagnosed with colorectal cancer
- Patient is scheduled for elective either open, laparoscopic or robotic with mesorectal excision (either abdominal or transanal approach) which will require the creation of an anastomosis, maximally 10 cm from the anal verge
- Patients who are scheduled to receive a protective stoma under routine clinical practice during their primary planned operation.
- Patient is scheduled to undergo mechanical bowel preparation
- The patient has been informed of the nature of the study, agrees to its provisions and has provided written informed consent, approved by the appropriate Medical Ethics Committee (EC) or Institutional Review Board (IRB).
Exclusion criteria
- Patient has local or systemic infection at the time of intervention (e.g., peritonitis)
- Major surgical or interventional procedures within 45 days prior to this study or planned surgical or interventional procedures within 6 months of entry into this study (not including, placement of port for chemotherapy or ureter stent insertion).
- Patients with ASA classification \> 3
- Albumin \< 30 g/liter
- Patient has a diagnosis of bowel obstruction, bowel strangulation, peritonitis, bowel perforation, ischemic bowel, carcinomatosis or extensively spread inflammatory bowel disease
- Patients has a diagnosis of coagulopathy, thrombocytopenia, immune suppression
- Patient is going through another surgical procedure (other than ileostomy, adhesiolysis) during the surgery.
- The patient is currently participating in another investigational drug or device study unless pre-approved by the sponsor.
- Patient has been taking regular systemic/ steroid medication in the last 6 months.
- Patients is taking antimetabolites or antiplatelet agents.
- Patient has preexisting sphincter problems
- Patient has evidence of extensive local disease in the pelvis or has undergone a prior pelvic anastomosis.
- Patients with massive diverticulosis at the sigmoid/descending colon (viewed on preoperative CT)
- Any condition or abnormality which in the opinion of the investigator may jeopardize the patient's safe participation or the quality of the data
- Pregnant or nursing female patients. Female patients of child-bearing potential must have a negative pregnancy test done within 7 days prior to surgical procedure per site standard test.
Where
- Irvine, California
- San Diego, California
- Aurora, Colorado
- Detroit, Michigan
- Providence, Rhode Island
- Salt Lake City, Utah
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jul 6, 2026 · Source of record for eligibility and locations