A Study to Evaluate the Efficacy of an Oral Medication in the Treatment and Prevention of Digital Ulcers in Patients With Systemic Sclerosis (Scleroderma).
1. marts 2017 opdateret af: Lorinda S Chung, Stanford University
A Pilot Study to Evaluate the Efficacy of Ambrisentan in the Treatment and Prevention of Digital Ulcers in Patients With Systemic Sclerosis.
This is a research study of an investigational drug called ambrisentan (Letairis) in the treatment and prevention of digital ulcers in patients with systemic sclerosis.
Studieoversigt
Status
Afsluttet
Betingelser
Intervention / Behandling
Detaljeret beskrivelse
Ambrisentan is an endothelin blocker approved for the treatment of pulmonary arterial hypertension.
Patients with systemic sclerosis can have damage to their blood vessels, resulting in increased levels of endothelin in their bloodstream that then causes decreased blood flow to the digits.
This can result in very painful digital ulcers.
We hope to learn whether blocking the action of endothelin with ambrisentan will be helpful in the treatment and prevention of digital ulcers in patients with systemic sclerosis.
This therapy is not approved for the treatment of systemic sclerosis, but this study will help us learn whether ambrisentan is safe and effective in the treatment and prevention of digital ulcers in patients with systemic sclerosis.
Undersøgelsestype
Interventionel
Tilmelding (Faktiske)
20
Fase
- Ikke anvendelig
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiesteder
-
-
California
-
Stanford, California, Forenede Stater, 94305
- Stanford University School of Medicine
-
-
Deltagelseskriterier
Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.
Berettigelseskriterier
Aldre berettiget til at studere
18 år og ældre (Voksen, Ældre voksen)
Tager imod sunde frivillige
Ingen
Køn, der er berettiget til at studere
Alle
Beskrivelse
Inclusion Criteria:
- Diagnosis of limited or diffuse systemic sclerosis (SSc) according to American College of Rheumatology or LeRoy criteria
- Age greater than 18 years of age
- At least one digital ulcer located on the volar or lateral surface at or distal to the proximal interphalangeal joints
- At least one new DU that developed within 12 weeks prior to screening
- Vasodilator therapies, including calcium channel blockers, alpha-1-antagonists, ACE-inhibitors, nitroglycerin, and angiotensin receptor blockers, are permitted as long as the doses are stable for 2 weeks prior to screening and throughout the study
- Treatment with omeprazole or other proton pump inhibitors must be stable for 2 weeks prior to screening and throughout the study
Exclusion Criteria:
- Patients with pulmonary arterial hypertension, NYHA Class III or IV
- Patients who are hemodynamically unstable, or have acute renal, cardiac or pulmonary failure
- Concurrent malignancy except non-melanoma skin cancers
- Patients who have required systemic antibiotics for infected digital ulcers within 2 weeks of screening
- Patients receiving phosphodiesterase-5 inhibitors, endothelin receptor antagonists, or prostanoids within 4 weeks of screening
- Patients receiving cyclosporine within 6 weeks of screening
- Patients who have participated in any investigational study within 30 days of screening
- Pregnant or nursing women
- Patients with a history of drug or alcohol abuse within 6 months of screening
- History of hepatitis B, hepatitis C, or HIV infection
- Any medical condition that, in the opinion of the investigator, might interfere with the subject's participation in the study or poses an added risk for the subject
- Inability to comply with study and follow-up procedures
- Transaminase elevation > 3X the upper limit of normal at screening
- Hemoglobin less than 8.5 g/dL
- Platelet count less than 100 X 109/L
- White blood cell count less than 3.0 X 109/L
- Serum creatinine less than 2.0 mg/dL
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
|---|---|
|
Eksperimentel: Active
Ambrisentan
|
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
New Digital Ulcers (DU) 4 Weeks Prior to Week 24
Tidsramme: 4 weeks prior to week 24
|
The number of new digital ulcers (DU) that have developed in the preceding 4 weeks assessed at week 24 from baseline.
|
4 weeks prior to week 24
|
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
New DU 4 Weeks Prior to Week 12
Tidsramme: 4 weeks prior to week 12
|
The number of new DU that have developed in the preceding 4 weeks assessed at week 12 from baseline.
|
4 weeks prior to week 12
|
|
Subjects Experiencing Complete (Total Reepithelialization) Healing of All Baseline DU at Week 12.
Tidsramme: 12 weeks
|
12 weeks
|
|
|
Subjects Experiencing Complete Healing of > 50% of the Number of Baseline DU at Week 12.
Tidsramme: 12 weeks
|
12 weeks
|
|
|
Change in the Scleroderma Health Assessment Questionnaire (SHAQ) at Week 24 Compared With Baseline.
Tidsramme: 24 weeks
|
Range is 0-3 with 0 meaning the least amount of disability and 3 the greatest of disability.
|
24 weeks
|
Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Sponsor
Datoer for undersøgelser
Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.
Studer store datoer
Studiestart
1. juni 2008
Primær færdiggørelse (Faktiske)
1. december 2010
Studieafslutning (Faktiske)
1. december 2010
Datoer for studieregistrering
Først indsendt
28. juli 2008
Først indsendt, der opfyldte QC-kriterier
28. juli 2008
Først opslået (Skøn)
30. juli 2008
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
31. marts 2017
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
1. marts 2017
Sidst verificeret
1. marts 2017
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- SU-07222008-1265
- IRB Protocol # 14409
Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .