Clinical trial Recruiting at 4 sites Interventional Ages 18 and up

SUBMO for Submucosal Injection in Endoscopic Resection of Colorectal Polyps

Official title: Randomized Clinical Trial to Evaluate the Efficacy and Safety of the Use of a Medical Device (SUBMO®) for Submucosal Injection in Endoscopic Resection Techniques of Superficial Gastrointestinal Lesions.

Run by i+Med S.Coop. · NCT07448129 · Data updated 2026-11-12

This trial tests whether SUBMO®, a hyaluronic acid-based gel with blue dye, can safely and effectively replace saline for submucosal injection during endoscopic removal of colorectal polyps larger than 10 mm.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment300 (estimated)
Sponsori+Med S.Coop.
Industry-sponsored
Locations4 sites (Barcelona, Barcelona and 3 other locations)
StatusRecruiting
StartedApril 29, 2026
Main results expectedMarch 2027
Study endsMarch 2027
Registry record updatedJuly 9, 2026
Trial IDNCT07448129 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 18 and older with a confirmed colorectal lesion larger than 10 mm that is technically resectable by EMR or ESD.

Probably not a fit

Patients with lesions not amenable to endoscopic resection or with conditions that preclude safe endoscopic management may not benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Adults with colorectal polyps over 10 mm will be randomly treated with SUBMO® or saline for submucosal lifting during endoscopic mucosal resection or endoscopic submucosal dissection. The study looks to show non-inferiority of SUBMO® to saline in achieving complete resection and to compare safety, injection needs, and procedure characteristics. Secondary goals include measuring total product volume, number of injections, submucosal cushion durability, procedure duration, and ease of resection, along with endoscopist assessments and possible device- or procedure-related adverse events.

Why it matters

Potential benefit: If successful, SUBMO® could offer similar or better resection outcomes with potential improvements in safety and procedural efficiency for endoscopic removal of larger colorectal lesions.

How similar studies have gone: Previous studies in similar hydrogel submucosal injectates have shown promise, but this approach with SUBMO® is being evaluated for non-inferiority to saline in this setting.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Subjects \>18 years old.
* Presence of a colorectal lesion larger than 10 mm, confirmed through colonoscopy.
* The lesion must be considered technically resectable using either Endoscopic Mucosal Resection (RME) or Endoscopic Submucosal Dissection (DSE).
* The participant must be willing and able to comply with all required study visits and procedures, according to the protocol.
* The participant must understand, sign, and date the written informed consent form before undergoing any study-specific procedures.

Exclusion Criteria:

* Severe comorbidities according to clinical judgment, including patients classified as ASA IV or ASA V, except those ASA IV cases explicitly approved as clinically safe by the center's Anesthesiology Service (using the ASA anesthetic classification).
* Patients presenting some coagulopathy that prevents safe endoscopic resection.
* Lesions that are suspicious endoscopic invasive cancer.
* Any medical condition that, in the investigator's opinion, could compromise patient safety or protocol adherence.
* Known allergy or hypersensitivity to any component of the investigational product, including hyaluronic acid, methylene blue, or any excipients.
* Contraindications to colonoscopy or to the administration of sedation/anesthesia.
* Current participation in another clinical investigation with an investigational product, or participation in any clinical study (with tested or untested products) within the previous 30 days prior to randomization.
* Pregnant or breastfeeding women.

Where it's running

  • Hospital Universitario de la Santa Creu i Sant Pau
    Barcelona, Barcelona, Spain
    Recruiting
  • Hospital Althaia
    Manresa, Barcelona, Spain
    Recruiting
  • Hospital Universitario Basurto
    Bilbao, Bizkaia, Spain
    Recruiting
  • Hospital de Cruces
    Bilbao, Bizkaia, Spain
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.