Actively Recruiting

Phase 2
Age: 18Years +
All Genders
ID02939573

A Randomized Multicenter Study Comparing Colchicine, Dapsone, and Azathioprine for Isolated Skin Vasculitis

Led by University of Pennsylvania · Updated on 2026-01-23

90

Participants Needed

16

Research Sites

N/A

Total Duration

On this page

Sponsors

U

University of Pennsylvania

Lead Sponsor

N

National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS)

Collaborating Sponsor

AI-Summary

What this Trial Is About

Researchers are evaluating the effectiveness of three standard medications—colchicine, dapsone, and azathioprine—in treating patients with isolated skin vasculitis. This randomized, multicenter trial aims to compare these treatments over a two-stage process, focusing on patients with skin-limited vasculitis conditions such as small or medium vessel vasculitis, cutaneous polyarteritis nodosa, and IgA vasculitis without significant kidney involvement. The study is sponsored by the University of Pennsylvania and is conducted as a Phase 2 trial. Participants are initially randomized to receive one of the three study drugs for six months. The primary endpoint is the response to treatment at six months. If a participant needs to stop their assigned medication due to lack of response, disease flare, or side effects within the first six months or during follow-up up to twelve months, they will be re-randomized to one of the remaining two drugs for an additional six months. Response to therapy is evaluated again at the end of this second stage. During the study, participants will undergo regular assessments including physician and patient global response evaluations, quality of life measurements, and specific skin-related questionnaires at multiple time points up to twelve months. Researchers will monitor treatment response at months 3, 6, 9, and 12, with safety and side effects carefully observed. Total participation can last up to one year, with ongoing follow-up to assess the effectiveness and tolerability of the study medications.

CONDITIONS

Brief Title

A Randomized Multicenter Study for Isolated Skin Vasculitis

Who Can Participate

Age: 18Years +
All Genders

Eligibility Criteria

Eligible

You may qualify if you...

  • Adults aged 18 years or older
  • Diagnosis of isolated cutaneous small or medium-sized vessel vasculitis, cutaneous polyarteritis nodosa, or IgA vasculitis without active kidney involvement
  • Diagnosis confirmed by skin biopsy including immunofluorescence study for small vessel vasculitis
  • Active skin vasculitis lasting at least 1 month or at least 2 flares in the past 6 months
  • Active skin lesions at the time of enrollment (excluding healing or post-inflammatory lesions)
  • Patients may have contraindications or prior treatment failure with one study drug and can enter directly into stage 2 (capped at 10% of enrollment)
  • Prednisone users must taper off within 6 weeks after starting study drug unless on stable low dose for other conditions
  • Ability to provide informed consent
Not Eligible

You will not qualify if you...

  • Presence of significant systemic vasculitis or diffuse disease requiring immunosuppressive therapy
  • Known systemic vasculitis conditions such as granulomatosis with polyangiitis, eosinophilic granulomatosis, cryoglobulinemic vasculitis, systemic polyarteritis nodosa, CNS vasculitis, or positive ANCA
  • Secondary skin vasculitis due to autoimmune diseases, cancer, hematologic disorders, active infection, or medications
  • History of serious allergy or intolerance to study drugs (except for direct entry into stage 2, capped at 10%)
  • Contraindication or failure to respond to two or more study drugs
  • Deficiency of glucose-6-phosphate dehydrogenase (G6PD) or history of hemolytic anemia (except for direct entry into stage 2, capped at 10%)
  • Low or absent thiopurine methyltransferase (TPMT) activity (if known)
  • Significant liver or kidney dysfunction
  • Significant anemia (hemoglobin less than 10 g/dL)
  • Comorbid conditions likely requiring intermittent prednisone during study
  • Active cancer or recent malignancy within 5 years (with some exceptions)
  • Active serious infection
  • Unable to provide consent
  • Pregnant or lactating women

AI-Screening

AI-Powered Screening

Complete this quick 3-step screening to check your eligibility

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Your Study Journey

Screening

Duration - 2 to 4 weeks

Participants are screened for eligibility to participate in the trial.

1 visit (in-person)

Treatment

Duration - 6 months

Participants are randomized to receive one of three medications (colchicine, dapsone, or azathioprine) for treating isolated skin vasculitis.

Visits at months 0, 1, 3, and 6 for assessments

Treatment

Duration - 6 months

If participants discontinue the first study drug due to lack of response, flare, or side effects, they are re-randomized to one of the two remaining medications for additional treatment.

Visits at months 6, 9, and 12 for assessments

Trial Site Locations

Total: 16 locations

1

University of Kansas Medical Center

Kansas City, Kansas, United States

Actively Recruiting

2

Boston University School of Medicine

Boston, Massachusetts, United States, 02118

Completed

3

Mayo Clinic

Rochester, Minnesota, United States, 55905

Completed

4

Northwell Health

Lake Success, New York, United States, 11042

Completed

5

Hospital for Special Surgery

New York, New York, United States, 10021

Completed

6

Cleveland Clinic

Cleveland, Ohio, United States

Completed

7

Penn State Hershey Medical Center

Hershey, Pennsylvania, United States, 17033

Completed

8

University of Pennsylvania

Philadelphia, Pennsylvania, United States, 19104

Actively Recruiting

9

Vanderbilt University

Nashville, Tennessee, United States, 37232

Actively Recruiting

10

UT Southwestern Medical Center

Dallas, Texas, United States, 75390

Actively Recruiting

11

University of Utah

Salt Lake City, Utah, United States

Completed

12

University of Virginia

Charlottesville, Virginia, United States, 22903

Actively Recruiting

13

St. Joseph's Healthcare

Hamilton, Ontario, Canada

Actively Recruiting

14

University of Toronto Mount Sinai Hospital

Toronto, Ontario, Canada

Actively Recruiting

15

McGill University Health Centre

Montreal, Quebec, Canada, H4A 3J1

Actively Recruiting

16

Tohoku Medical and Pharmaceutical University Hospital

Kyoto, Japan, 602-8566

Completed

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Research Team

C

Carol McAlear, MA

How is the study designed?

Study Type

INTERVENTIONAL

Masking

NONE

Allocation

RANDOMIZED

Model

CROSSOVER

Primary Purpose

TREATMENT

Number of Arms

2

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Published Research Related To This Trial

Protocol for a randomized multicenter study for isolated skin vasculitis (ARAMIS) comparing the efficacy of three drugs: azathioprine, colchicine, and dapsone.

Robert G Micheletti, Christian Pagnoux, Roy N Tamura...

https://pubmed.ncbi.nlm.nih.gov/32345372