Outcomes and Quality of Life Following Rectal Artery Embolization for Bleeding Internal Hemorrhoids
HEMBO-1
Hemorrhoidal Embolization Trial-1 (HEMBO-1)
1 other identifier
observational
20
1 country
1
Brief Summary
This study will assess how effective and safe rectal artery embolization works to treat symptomatic bleeding predominant internal hemorrhoids.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for all trials
Started Jun 2024
Typical duration for all trials
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
October 24, 2023
CompletedFirst Posted
Study publicly available on registry
October 30, 2023
CompletedStudy Start
First participant enrolled
June 7, 2024
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 1, 2026
ExpectedStudy Completion
Last participant's last visit for all outcomes
December 1, 2026
June 12, 2025
June 1, 2025
2.5 years
October 24, 2023
June 10, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (3)
Change in French bleeding score (FBS)
The French bleeding score assesses the intensity of hemorrhoidal bleeding with scores ranging from 0 (no bleeding) to 9 (daily bleeding with anemia requiring blood transfusions)
Baseline, 1, 3, 6 and 12 months
Adverse Events
Number of subjects to experience adverse events defined by 1) Common Terminology Criteria for Adverse Events (CTCAE) v6.0, 2) Society of Interventional Radiology \[SIR\] classifications of postoperative complications and 3) Clavien-Dindo Classification
Day 1 and 1, 3, 6 and 12 months
Diagnostic accuracy of pre-embolization Computed Tomography Angiography (CTA)
Diagnostic accuracy and inter-rater agreement of pre-embolization CTA in identifying the hemorrhoidal arteries supplying the hemorrhoidal cushion
Baseline (pre-embolization)
Secondary Outcomes (7)
Visual Analog Scale (VSS) Pain
Baseline, 1, 3, 6 and 12 months
Visual Analog Scale (VAS) for Quality of Life
Baseline, 1, 3, 6 and 12 months
Goligher Prolapse Score
Baseline, 1, 3, 6 and 12 months
Hemorrhoidal Bleeding Score (HBS)
Baseline, 1, 3, 6 and 12 months
Hemorrhoidal Severity Score (HSS)
Baseline, 1, 3, 6 and 12 months
- +2 more secondary outcomes
Interventions
Subjects will undergo planned rectal artery embolization (RAE) in Vascular and Interventional Radiology per standard clinical protocol.
Eligibility Criteria
Subjects referred from the Colon and Rectal Surgery who are scheduled to undergo rectal artery embolization (RAE) as part of their standard clinical care at the Mayo Clinic in Rochester, Minnesota.
You may qualify if:
- Grade II or III hemorrhoidal disease as determined by a board-certified colorectal surgeon.
- Persistent or recurrent symptoms following hygiene and dietary measures or medication.
- Bleeding predominant ± pain symptoms.
- Undergoing planned rectal artery embolization (RAE) per standard clinical care.
- Male or female with age greater than 18 years, with the capacity and willingness to provide a written informed consent.
- Negative pregnancy test (if applicable).
You may not qualify if:
- Prior hemorrhoid surgery.
- Grade IV hemorrhoidal disease.
- Acute hemorrhoid complications.
- Chronic anal or perianal fissures.
- History of colorectal surgery or pelvic radiation.
- Inflammatory bowel disease.
- Portal hypertension or mesenteric venous congestion/occlusion.
- Inferior mesenteric artery (IMA) or internal iliac artery (IIA) stenosis or occlusion.
- Contraindication to iodinated contrast.
- Pregnant and/or breast-feeding subjects. A negative pregnancy test within 48 hours of the procedure per clinical care.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Mayo Cliniclead
- Terumo Corporationcollaborator
Study Sites (1)
Mayo Clinic Minnesota
Rochester, Minnesota, 55905, United States
Related Links
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Scott Thompson, MD, PhD
Mayo Clinic, Vascular and Interventional Radiology
- PRINCIPAL INVESTIGATOR
Scott R Kelley, MD
Mayo Clinic, Colon and Rectal Surgery
Central Study Contacts
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Principal Investigator
Study Record Dates
First Submitted
October 24, 2023
First Posted
October 30, 2023
Study Start
June 7, 2024
Primary Completion (Estimated)
December 1, 2026
Study Completion (Estimated)
December 1, 2026
Last Updated
June 12, 2025
Record last verified: 2025-06
Data Sharing
- IPD Sharing
- Will not share