Clinical trial Recruiting at 1 site Interventional Ages 19 and up

Comparing Ramosetron and Loperamide for treating Low Anterior Resection Syndrome

Official title: Safety & Efficacy of 5-HT3 Receptor Antagonist (Ramosetron) Versus Loperamide for the Treatment of Low Anterior Resection Syndrome (RALLARS): Multicenter Randomized Controlled Trial

Run by Seoul National University Hospital · NCT05577845 · Data updated 2026-11-12

This study is testing whether Ramosetron or Loperamide works better to relieve symptoms for people dealing with Low Anterior Resection Syndrome after rectal cancer surgery.

More Low Anterior Resection Syndrome trials

Quick facts

Study typeInterventional
Ages19 Years and up
SexAll
Enrollment212 (estimated)
SponsorSeoul National University Hospital
Academic / other
Locations1 site (Seoul, Jongro-gu)
StatusRecruiting
StartedMarch 27, 2023
Main results expectedDecember 2025
Study endsDecember 2032
Registry record updatedApril 25, 2023
Trial IDNCT05577845 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are patients with mid and low rectal cancer who have undergone surgery and are experiencing major LARS.

Probably not a fit

Patients with recurrent rectal cancer, stage IV cancer, inflammatory bowel disease, or uncontrolled preoperative fecal incontinence or constipation may not benefit from this study.

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

What this trial studies

This clinical trial evaluates the safety and efficacy of Ramosetron, a 5-HT3 receptor antagonist, compared to Loperamide for patients suffering from Low Anterior Resection Syndrome (LARS) following rectal cancer surgery. It is a multicenter randomized controlled trial aimed at determining which treatment provides better symptom relief for patients experiencing major LARS. Participants will be recruited from Seoul National University Hospital and will be monitored for their response to the interventions over a specified period post-surgery.

Why it matters

Potential benefit: If successful, this study could provide a more effective treatment option for patients suffering from LARS, improving their quality of life.

How similar studies have gone: While this approach is being tested in this specific context, similar studies using 5-HT3 receptor antagonists for gastrointestinal issues have shown promise.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* mid and low rectal cancer (AV\<15cm)
* stage II, III, preop long-course CCRT, then ileostomy repair
* about 1\~12 months after operation (no stomy)
* about 1\~6 months after ileostomy repair
* major LARS

Exclusion Criteria:

* recurred rectal cancer
* stage IV
* IBD
* uncontrolled preoperative fecal incontinence or constipation

Where it's running

  • Seoul National University Hospital
    Seoul, Jongro-gu, South Korea
    Recruiting

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.