Skip to content

Low Dose Radiotherapy for Advanced Hidradenitis Suppurativa

A Phase I Study of Low Dose Radiotherapy for Advanced Hidradenitis Suppurativa

Status
Terminated
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03040804
Acronym
RTHS
Enrollment
2
Registered
2017-02-02
Start date
2017-03-01
Completion date
2020-12-21
Last updated
2021-11-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hidradenitis Suppurativa, Hidradenitis

Keywords

hidradenitis suppurativa, HS, radiotherapy

Brief summary

To establish the safety of radiotherapy in the treatment of advanced hidradenitis suppurativa. Patients will receive radiotherapy treatment over one week and then they will be followed for the next three months.

Detailed description

This is a phase I clinical trial using a Simon-two stage design to establish the safety of radiotherapy in the treatment of advanced hidradenitis suppurativa (HS). In the first six months, 6 patients will be enrolled, if the patients in the study do not meet the termination criteria, then the study will extend to a second stage. A maximum of 20 patients will be enrolled. Patients will be treated with skin-directed radiotherapy, using a total prescription dose of 7.5 Gy in five fractions of 1.5 Gy over one week. Patients will then be seen in the HS specialty clinic at Montefiore Medial Center for at least three months. Quality of life changes, immunohistochemical changes, and cutaneous discharge will also be evaluated during the study period.

Interventions

Subjects in this protocol will only receive radiotherapy directed at one region, typically the region that is most bothersome to the patient. Patients will receive a total radiotherapy dose 7.5 Gy in five daily fractions of 1.5 Gy.

Sponsors

Montefiore Medical Center
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Simon two-stage design. In the first stage, 6 patients will be enrolled. If the patients in the study do not meet the termination criteria then the study will extend to a second stage and a maximum of 20 patients will be enrolled.

Eligibility

Sex/Gender
ALL
Age
20 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Diagnosis of Hidradenitis Suppurativa made at the Montefiore Hidradenitis Suppurativa Treatment Center, with Hurley Stage 2-3 (defined as recurrent abscesses or boils with diffuse or broad involvement, multiple interconnected sinus tracts in the whole area) * Failed maximal medical therapy for Hidradenitis Suppurativa or ineligible for standard medical therapy or surgery * Age \> 20 years * Women of childbearing age: must have a negative pregnancy test within 72 hours prior to the start of study therapy and agree to an adequate method of contraception throughout treatment and for at least 4 weeks after study contraception.

Exclusion criteria

* Pregnant women * Individuals \< 20 years old

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With HS Who Experience Treatment-related Grade ≥3 Adverse Events During Radiotherapy or Within 3 Months of Radiotherapy Completion, Assessed Using CTCAE Version 4.0follow up for 3-6 months post treatmentNumber of participants with HS who experience treatment-related CTCAE version 4.0 Grade ≥3 adverse events during radiotherapy or within 3 months of radiotherapy completion. Common Terminology Criteria for Adverse Events (CTCAE) is an internationally accepted standard for defining and categorizing adverse events based on severity of reported adverse events. The grading scheme is from 1 (least severe) to 5 (most severe). For radiotherapy associated adverse events, CTCAE version 4.0 will be applied to Rash: dermatitis associated with radiation. Grade 1. Mild: Faint erythema or dry desquamation. Grade 2. Moderate: Moderate to brisk erythema; patchy moist desquamation, mostly confined to skin folds and creases; moderate edema. Grade 3. Severe: Moist desquamation other than skin folds and creases; bleeding induced by minor trauma or abrasion. Grade 4. Life threatening: Skin necrosis or ulceration of full thickness dermis; spontaneous bleeding from involved site. Grade 5

Secondary

MeasureTime frameDescription
Changes in NIH Patient-Reported Outcomes Measurement Information System (PROMIS).6 months - 1 year post treatmentEvaluation of the efficacy of radiotherapy in improvement of patient's quality of life using patient reported outcome measures, including pain interference and physical functioning at 3 months (and optionally at 6 months and 12 months) after treatment.
Evaluation of Radiotherapy Associated Hidradenitis Suppurativa Lesions.3-6 months post treatmentHematoxylin and Eosin (H&E) stain and immunohistochemistry stains will be performed on skin biopsy specimens to investigate histological changes following radiotherapy for advanced hidradenitis suppurativa lesions.

Countries

United States

Participant flow

Participants by arm

ArmCount
Low Dose Radiotherapy
Patients will receive skin-directed radiotherapy, using a total prescription dose of 7.5 gy in five fractions of 1.5 gy over one week Low dose Radiotherapy: Subjects in this protocol will only receive radiotherapy directed at one region, typically the region that is most bothersome to the patient. Patients will receive a total radiotherapy dose 7.5 Gy in five daily fractions of 1.5 Gy.
2
Total2

Baseline characteristics

CharacteristicLow Dose Radiotherapy
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
2 Participants
Age, Categorical
Between 18 and 65 years
0 Participants
Age, Continuous70 years
Improvement in hidradenitis suppurativa lesion size2 participants
Race/Ethnicity, Customized
African American
1 Participants
Race/Ethnicity, Customized
Caucasian
1 Participants
Region of Enrollment
United States
2 participants
Sex: Female, Male
Female
2 Participants
Sex: Female, Male
Male
0 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 2
other
Total, other adverse events
0 / 2
serious
Total, serious adverse events
0 / 2

Outcome results

Primary

Number of Participants With HS Who Experience Treatment-related Grade ≥3 Adverse Events During Radiotherapy or Within 3 Months of Radiotherapy Completion, Assessed Using CTCAE Version 4.0

Number of participants with HS who experience treatment-related CTCAE version 4.0 Grade ≥3 adverse events during radiotherapy or within 3 months of radiotherapy completion. Common Terminology Criteria for Adverse Events (CTCAE) is an internationally accepted standard for defining and categorizing adverse events based on severity of reported adverse events. The grading scheme is from 1 (least severe) to 5 (most severe). For radiotherapy associated adverse events, CTCAE version 4.0 will be applied to Rash: dermatitis associated with radiation. Grade 1. Mild: Faint erythema or dry desquamation. Grade 2. Moderate: Moderate to brisk erythema; patchy moist desquamation, mostly confined to skin folds and creases; moderate edema. Grade 3. Severe: Moist desquamation other than skin folds and creases; bleeding induced by minor trauma or abrasion. Grade 4. Life threatening: Skin necrosis or ulceration of full thickness dermis; spontaneous bleeding from involved site. Grade 5

Time frame: follow up for 3-6 months post treatment

Population: Patients with Hidradenitis Suppurativa (HS) Hurley Stage 2-3.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Low Dose RadiotherapyNumber of Participants With HS Who Experience Treatment-related Grade ≥3 Adverse Events During Radiotherapy or Within 3 Months of Radiotherapy Completion, Assessed Using CTCAE Version 4.02 Participants
Secondary

Changes in NIH Patient-Reported Outcomes Measurement Information System (PROMIS).

Evaluation of the efficacy of radiotherapy in improvement of patient's quality of life using patient reported outcome measures, including pain interference and physical functioning at 3 months (and optionally at 6 months and 12 months) after treatment.

Time frame: 6 months - 1 year post treatment

Population: Due to COVID-19 pandemic, patient safety was prioritized and the study was terminated early. Participant outcome measures were not performed.

Secondary

Evaluation of Radiotherapy Associated Hidradenitis Suppurativa Lesions.

Hematoxylin and Eosin (H&E) stain and immunohistochemistry stains will be performed on skin biopsy specimens to investigate histological changes following radiotherapy for advanced hidradenitis suppurativa lesions.

Time frame: 3-6 months post treatment

Population: Due to COVID-19 pandemic, patient safety was prioritized and the study was terminated early. Participant outcome measures were not completed.

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026