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RecruitingNCT07179601ClinicalTrials.gov record

Hemorrhoidal Artery Embolization: Longitudinal Impact On Symptoms (HELIOS)

Internal Hemorrhoids · HAE

THE QUICK READ

What this study involves

The registry says this study is recruiting. Individual locations may have different availability.

Study type
Interventional
Phase
Not applicable
Age range
18 years - 90 years
Sex eligible
All sexes
Healthy volunteers
Not accepted
Participants
22 Estimated

These are starting points, not an eligibility decision. The research team must review the full requirements.

About the research

Hemorrhoidal artery embolization (HAE) is a novel treatment for symptomatic internal hemorrhoids. HAE involves the deliberate blockage (embolization) of enlarged rectal or hemorrhoidal arteries leading to reduction of abnormal blood flow to the hemorrhoidal tissue. The aim of HAE is to the improve hemorrhoid related symptoms, especially bleeding. Initial reports of HAE have demonstrated that it both safe and effective. Following an initial clinic visit to determine trial candidacy, enrolled patients will be subsequently treated with HAE. Patients will be followed for a year with clinic follow-up visits at 1, 3, 6 and 12 months.

Read the full description

Hemorrhoidal artery embolization (HAE) is a novel treatment for symptomatic internal hemorrhoids. HAE involves the deliberate blockage (embolization) of enlarged rectal or hemorrhoidal arteries leading to reduction of abnormal blood flow to the hemorrhoidal tissue. The aim of HAE is to the improve hemorrhoid related symptoms, especially bleeding. Initial reports of HAE have demonstrated that it both safe and effective. However, the initial data is limited due to variations in embolization techniques, few studies with prospective long-term follow-up, and studies focusing on patients with only severe symptoms. Further research is needed to understand the specific long-term effectiveness of different embolization materials in a population that more accurately reflects the large number of patients with hemorrhoidal disease who would likely benefit from HAE. The proposed research project includes 22 patients with symptomatic internal hemorrhoids. Following an initial clinic visit to determine trial candidacy, enrolled patients will be subsequently treated with HAE. Patients will be followed for a year with clinic follow-up visits at 1, 3, 6 and 12 months.

Who may be able to participate?

The list below is the sponsor’s full registry wording. It can include conditions, prior treatment, test results and other requirements. A match in search does not mean you qualify.

Inclusion Criteria:

  • Age 18 to 90 years
  • Ability to give written informed consent and to comply with the follow-up visits
  • Symptomatic hemorrhoidal disease with French Bleeding Score (FBS) of at least four out of nine
  • Refusal of or contraindication to surgery
  • Refusal of or contraindication to other minimally invasive hemorrhoid treatments
  • Grade I to III hemorrhoids
  • Previous anoscopy or colonoscopy demonstrating internal hemorrhoids within 1 year
  • Supply of the CCR from either the SRA or MRA on intra-procedural angiogram prior to embolization

Exclusion Criteria:

  • Asymptomatic patients
  • Patients who ever had previous colorectal surgery
  • Grade IV hemorrhoids
  • Colorectal disease other than hemorrhoids that could result in bleeding
  • Anatomic findings on CTA that would preclude successful embolization
  • Contraindication to iodinated contrast
  • Inability to give written informed consent
  • Active infection or malignancy
  • Recent (within 12 months) or active cigarette use
  • History of inflammatory bowel disease
  • Uncorrectable bleeding diathesis
  • Presence of portal hypertension or rectal varices seen on pre-procedure CTA or anoscopy/colonoscopy
  • No SRA or MRA supply to the CCR seen intra-procedural angiogram
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Treatment, groups and participation

The registry may describe treatments and study duration without a complete visit calendar. Ask the study team for the exact schedule, procedures, risks, costs and alternatives. Keep your usual care plan unless your treating clinician tells you otherwise.

Assignment
Not applicable
Masking
No masking
Hemorrhoidal artery embolization

Patients in this arm will undergo hemorrhoidal artery embolization (HAE) for treatment of symptomatic internal hemorrhoids

Procedure: Hemorrhoidal artery embolization

Hemorrhoidal artery embolization PROCEDURE

Hemorrhoidal artery embolization (HAE) involves the deliberate blockage of enlarged rectal or hemorrhoidal arteries leading to reduction of abnormal blood flow to the hemorrhoidal tissue. The aim of HAE is to the improve symptoms related to internal hemorrhoids, especially bleeding.

Prepare your questions

What researchers are measuring

Outcome measures describe what is being studied. They are not proof that a treatment works.

Primary measures

Proportion of patients with decrease in bleeding related symptoms of internal hemorrhoids as defined as a two-point decrease in French Bleeding Score

Time frame: From baseline to 12 months post procedure

Not reported in this registry record.

Secondary measures

Proportion of technically successful HAE procedures

Time frame: From baseline to 12 months post procedure

Not reported in this registry record.

Change in non-bleeding related symptoms of internal hemorrhoids as measured by the Hemorrhoid Disease Symptom Score (HDSS)

Time frame: From baseline to 12 months post procedure

The Hemorrhoidal Disease Symptom Score (HHDS) is a widely used questionnaire used by health professionals to evaluate the condition of patients with hemorrhoids. It can be self-administered and asks patients to rate the frequency and intensity of five primary symptoms: pain, itching, bleeding, soiling, and prolapse. Each symptom is rated on a scale of 0 to 4, with 0 indicating no symptoms and 4 indicating the most severe symptoms. The total HDSS score ranges from 0 to 20, with higher scores indicating more severe hemorrhoidal disease.

Change in non-bleeding related symptoms of internal hemorrhoids as measured by the Short Health Scale-Hemorrhoidal Disease (SHSHD)

Time frame: From baseline to 12 months post procedure

The Short Health Scale-Hemorrhoidal Disease questionnaire is a validated tool used to assess the impact of hemorrhoidal disease on a patient's health-related quality of life. It can be self-administered and measures four key dimensions: symptom load, functional status, disease-specific worries, and general well-being. Each symptom is rated on a scale of 1 to 7, with 1 indicating no symptoms and 7 indicating the most severe symptoms. The total SHSHD score ranges from 4 to 28, with higher scores indicating more severe hemorrhoidal disease.

Change in pain related to as measured by the Visual Analog Scale (VAS)

Time frame: From baseline to 12 months post procedure

The Visual Analog Scale (VAS) is a validated commonly used pain score. The VAS ranges from 0 to 10, with higher scores indicated higher pain levels.

Change in concomitant hemorrhoid medical therapy

Time frame: From baseline to 12 months post procedure

Not reported in this registry record.

Level of patient satisfaction after HAE as determined by patient satisfaction questionnaire

Time frame: From baseline to 12 months post procedure

Patient satisfaction will be determined by a patient satisfaction questionnaire with the following four options: very satisfied, satisfied, a little satisfied, and unsatisfied

Proportion of patients requiring subsequent non-surgical internal hemorrhoid procedures

Time frame: From baseline to 12 months post procedure

Not reported in this registry record.

Proportion of patients requiring surgical management of their internal hemorrhoids

Time frame: From baseline to 12 months post procedure

Not reported in this registry record.

No results are flagged as posted.

Review the complete result tables and limitations in the official record.

Open official results ↗

Research locations (1)

The overall study status and a local site’s status can differ. Confirm that location’s availability before traveling.

1 locations

University of California, Los AngelesLos Angeles, California, United StatesRecruiting
Renato Escobar, BSCONTACTraescobar@mednet.ucla.edu
Saima Chaabane, PhDCONTACTSChaabane@mednet.ucla.edu
Lucas Cusumano, MDPRINCIPAL_INVESTIGATOR
View location on map ↗

Study team and timeline

Lead sponsor
University of California, Los Angeles
Study start
Aug 5, 2025 Actual
Primary completion
Sep 30, 2028 Estimated
Study completion
Sep 30, 2029 Estimated
First posted
Sep 18, 2025 Actual
Last updated
Nov 10, 2026 Actual

Official study contacts

Lucas Cusumano, MDCONTACT
Official study title

Hemorrhoidal Artery Embolization: Longitudinal Impact On Symptoms (HELIOS)

A HUMAN NEXT STEP

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Source: ClinicalTrials.gov API v2. Information is submitted by sponsors and investigators. NLM does not approve the safety or science of all listed studies. Registry disclaimer.

Retrieved: Nov 12, 2026 · Last registry update: Nov 10, 2026