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RecruitingNCT06776016Updated Aug 7, 2026

Dietary Supplements to Treat Radiation-Induced Rectal Injury

A Phase 2 interventional study of Butyrate in Radiotherapy and Radiation Proctitis, sponsored by Sixth Affiliated Hospital, Sun Yat-sen University. Recruiting at 1 site in China. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2026-08-07.

Sponsored by Sixth Affiliated Hospital, Sun Yat-sen University · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
33
Allocation
Not applicable
Ages
18 Years to 75 Years
Sex
All
01

Study summary

This clinical study is a prospective, single-arm, single-center trial aimed at assessing the safety and efficacy of tributyrin (TB) as dietary supplements in the treatment of chronic radiation-induced rectal injury (RRI). We hypothesize that these supplements will help improve rectal bleeding symptoms and elevate the quality of life for patients. The study will test whether the supplements can lower the LENT-SOMA scales of rectal bleeding and enhance overall patient health. Efficacy will be evaluated through blood tests and other non-invasive methods, ensuring patient safety and comfort throughout the study.

02

Conditions studied

  • Radiotherapy
  • Radiation Proctitis

Keywords

  • radiotherapy
  • radiation proctitis
  • tributyrin
  • rectal bleeding
  • butyrate
03

Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Age 18-75 years
  • At least 3 months since the completion of pelvic radiotherapy
  • No evidence of tumor recurrence or metastasis
  • Rectal bleeding with grade 1-2 by LENT-SOMA scales

Exclusion criteria

Exclusion Criteria:

  • Acute or chronic infectious diseases
  • Serious systemic diseases
  • Known allergies to any components of the study medication
  • Colonoscopy indicating rectal ulceration (>1cm2), fistula, stricture, or necrosis
  • Late complications related to pelvic radiation injury
  • Other hemorrhagic or coagulation disorders
  • Previous rectal resection
  • Bowel obstruction or perforation that require surgery
  • Cognitive or psychological disorder
04

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
33 participants (estimated)

Study arms

  • Experimental
    Dietary supplements

    Participants receive dietary supplements combined with supportive care.

    Dietary Supplement: Butyrate

Interventions

  • Dietary supplementButyrate

    Agent: The dietary supplement contains tributyrin, a pro-drug of butyrate. Method: Participants receive the supplement orally at a dose of 1650 mg, 2-3 times daily, 12 weeks.

05

What researchers measure

Primary outcomes

  1. Number of participants with alleviated rectal bleeding (degraded by 1 or more)

    The symptom of rectal bleeding will be assessed by LENT-SOMA scales

    Time frame: At the time of 12 weeks since the start of treatment

Secondary outcomes

  1. Number of participants with mild rectal bleeding (grade 0-1)

    The symptom of rectal bleeding will be assessed by LENT-SOMA scales

    Time frame: At the time of 24 weeks since the start of treatment

06

Study locations

1 of 1 sites recruiting
  • Sixth Affiliated Hospital, Sun Yat-sen University
    Guangzhou, Guangdong, China
    Recruiting
07

Registry details

Key details

Study ID
NCT06776016
Lead sponsor
Sixth Affiliated Hospital, Sun Yat-sen University
Responsible party
Sponsor
First posted
Jan 15, 2025
Start date
Jan 15, 2025
Primary completion
Sep 30, 2026 (estimated)
Completion
Dec 31, 2026 (estimated)
Last update
Aug 7, 2026

Study contacts

Lekun Fang
Contact
fanglk3@mail.sysu.edu.cn
+86-13560226002

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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