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Rheumatologic DiseasePhase 1/2SclerodermaNCT02530996

Systemic Sclerosis (SSc) Vasculopathy: Improved Clinical Monitoring and Treatment

A Phase 1/2 study testing BH4 and Vasculopathy assessment in people with Rheumatologic Disease, run by VA Office of Research and Development at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Systemic sclerosis (SSc; scleroderma) is a multi-organ systemic disease characterized by activation of immune cells, which results in vascular dysfunction (vasculopathy) and subsequent scarring (fibrosis). SSc has a higher than expect prevalence in the US military. Read more about this study

Who is it for?
Ages 18 to 95 yearsHealthy volunteers can take part
Conditions the study is for
Rheumatologic Disease
What is being tested?
BH4 and Vasculopathy assessment
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
12 participants
Where
1 siteUnited States
Study dates
1 Jan 2016to 31 Dec 2019
Phase
Phase 1/2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 95 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Diagnosis of systemic sclerosis (SSc, scleroderma) by ACR/EULAR 2013 criteria.

Who cannot join

  • Age < 18
  • Pregnant or breast feeding
  • Unwillingness to consent

Trial locations and contacts

1 site in 1 country.

United States1 site
  • VA Salt Lake City Health Care System, Salt Lake City, UT

    Salt Lake City, Utah, 84148

Other trials in United States

About this study

Systemic sclerosis (SSc; scleroderma) is a multi-organ systemic disease characterized by activation of immune cells, which results in vascular dysfunction (vasculopathy) and subsequent scarring (fibrosis). SSc has a higher than expect prevalence in the US military. On a national level there are 5,766 SSc patients (ICD-9 710.1) presently cared for in the Veterans Health Administration (VHA). While there is no cure for SSc, studies of therapeutics that can help slow disease progression are valuable to our Veterans. This proposal addresses the solicitation for projects with attention to SSc requested by President Obama after reviewing potential contamination of water at Camp Lejeune. This proposal is a patient-centered outreach for our Veterans with SSc to inform and prevent catastrophic endstage vascular abnormalities, including digital ulcers, pulmonary arterial hypertension (PAH) and scleroderma renal crisis in SSc. The study proposes a novel application of a therapeutic for this disease. A better understanding of the initiating insult and natural progression of SSc vasculopathy is needed in order to develop therapeutics with a goal of curing/treating the underlying disease. This project has the potential to impact not only Veterans with SSc, but also those with vascular abnormalities including digital ulcers, PAH, and renal crisis. This proposal represents a potential major therapeutic advance for our Veterans with SSc.

Read the detailed description

Although SSc is heterogeneous in the extent of organ involvement and prognosis, it is accepted that all SSc cases have a progressive and usually devastating course. Since vasculopathy precedes fibrosis in this disease, a focus on understanding its natural history and preventative measures for vascular dysfunction has profound implications. This pilot work suggests that measurement of endothelial dysfunction with flow mediated dilatation (FMD) holds promise as novel method to assess disease progression as well as the therapeutic efficacy of the pharmacologic compound tetrahydrobiopterin (BH4) in SSc. The investigators believe that BH4, which targets the endothelium, has great promise to reduce SSc-related tissue hypoxia, end organ damage, and potentially may impact underlying disease progression. The first aim will adopt an integrative approach and validate a novel, non-invasive technique, FMD to define vasculopathy in SSc. The second aim and third aim (which is reported in this PRS report) will examine if BH4 is effective in ameliorating vascular dysfunction in patients with SSc and determine the role of oxidative stress in BH4-mediated improvements in vascular function in patients with SSc. The overarching goal of these aims is to improve vasculopathy detection and management in Veterans with SSc.

Being tested
BH4, Vasculopathy assessment, Placebo
Medical subject headings
Collagen Diseases

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • BH4Drug

    Also called Kuvan

    BH4 10 mg/kg/day given once to a total of 12 SSc patients

  • Vasculopathy assessmentDiagnostic test

    Also called Kuvan

    Non-invasive technique, flow mediated dilatation (FMD) to define vasculopathy in SSc.

  • PlaceboDrug

    Also called Placebo from IDS

    On the experimental days, patients reported to the laboratory after having consumed a standardized breakfast and oral BH4 (10mg/kg) or placebo five hours prior to their arrival. All measurements were taken at the same time of day to eliminate any diurnal effects. All participants abstained from alcohol, caffeine, and exercise for ≥12 hours prior to the study. Additionally, vasodilatory medications were discontinued 12 hours prior to study visit. In premenopausal women, measurements were performed during the early follicular phase of the menstrual cycle. All measurements were made under quiet, comfortable, ambient (~22°C) laboratory conditions.

Study groups in NCT02530996
Study groupRoleWhat they receive
Placebo before BH4ExperimentalSix SSc received oral placebo 10 mg/kg and had flow mediated dilatation measured. After a five day washout they crossed over to oral BH4 10 mg/kg and had flow mediated dilatation measured. Blood samples were obtained from these SSc patients and assessed for oxidative stress.
Receives: Drug: BH4; Diagnostic Test: Vasculopathy assessment; Drug: Placebo
BH4 before PlaceboExperimentalSix SSc received oral BH4 10 mg/kg and had flow mediated dilatation measured. After a five day washout they crossed over to oral placebo 10 mg/kg and had flow mediated dilatation measured. Blood samples were obtained from these SSc patients and assessed for oxidative stress.
Receives: Drug: BH4; Diagnostic Test: Vasculopathy assessment; Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Flow Mediated Dilatation (FMD)-Diameter of Artery

    FMD diameter of artery (mm, higher better)

    Measured: FMD was obtained on a single day at two different time points (after placebo and intervention) after a 5 day washout period.

  2. Flow Mediated Dilatation-shear Rate

    Measured: FMD was obtained on a single day at two different time points (after placebo and intervention) after a 5 day wash out period.

  3. Flow Mediated Dilatation- Blood Velocity

    Measured: FMD was obtained on a single day at two different time points (after placebo and intervention) after a 5 day wash out period.

  4. Flow Mediated Dilatation-blood Flow

    Measured: FMD was obtained on a single day at two different time points (after placebo and intervention) after a 5 day wash out period.

Secondary outcomes (8)
  1. Oxidative Stress Measurement-MDA: Malondialdehyde

    MDA (lower better). Plasma malondialdehyde assessed by Oxis Research/Percipio Bioscience, Foster City, CA.

    Measured: Oxidative stress measurements were obtained on a single day at two different time points (after placebo and intervention) after a 5-day wash out period.

  2. Oxidative Stress Measurement-catalase (CAT)

    CAT (higher better) assessed by Cayman Chemical Company, Ann Arbor, MI.

    Measured: Oxidative stress measurements were obtained on a single day at two different time points (after placebo and intervention) after a 5-day wash out period.

  3. Oxidative Stress Measurement- Protein Carbonyl

    Protein carbonyl (lower better). Plasma protein carbonyl levels assessed by Northwest Life Science Specialties, LLC Vancouver, WA.

    Measured: Oxidative stress measurements were obtained on a single day at two different time points (after placebo and intervention) after a 5-day wash out period.

  4. Oxidative Stress Measurement- Ferric Reducing Ability of Plasma (FRAP)

    FRAP (higher better). FRAP assessed using the method described by Benzie and Strain.

    Measured: Oxidative stress measurements were obtained on a single day at two different time points (after placebo and intervention) after a 5-day wash out period.

  5. Oxidative Stress Measurement- Superoxide Dismutase (SOD)

    SOD (higher better). SOD assessed by Cayman Chemical Company, Ann Arbor, MI.

    Measured: Oxidative stress measurements were obtained on a single day at two different time points (after placebo and intervention) after a 5-day wash out period.

  6. Oxidative Stress Measurement- Interleukin 6 (IL-6)

    IL-6 (lower better), assessed by R\&D Systems, Minneapolis, MN.

    Measured: Oxidative stress measurements were obtained on a single day at two different time points (after placebo and intervention) after a 5-day wash out period.

  7. Oxidative Stress Measurement- Tumor Necrosis Factor Alpha (TNF-α,

    TNF-α (lower better), assessed by R\&D Systems, Minneapolis, MN.

    Measured: Oxidative stress measurements were obtained on a single day at two different time points (after placebo and intervention) after a 5-day wash out period.

  8. Oxidative Stress Measurement- C-reactive Protein (CRP)

    CRP (lower better). CRP assessed by R\&D Systems, Minneapolis, MN.

    Measured: Oxidative stress measurements were obtained on a single day at two different time points (after placebo and intervention) after a 5-day wash out period.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted21 Aug 2015 (estimated)
  2. Study start1 Jan 2016
  3. Primary completion1 Jun 2016
  4. Study completion31 Dec 2019

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1/2
Primary purpose
Basic science
Allocation
Randomised
Intervention model
Crossover
Model description
Twelve systemic sclerosis SSc patients were studied 5 hours after oral BH4 administration (10 mg/kg body weight) or placebo on separate days using controlled, counterbalanced, double-blind, crossover experimental design.
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
12 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02530996
Sponsor's protocol ID
IMMA-006-14F
Acronym
Scleroderma
Status last verified
Apr 2021
First submitted
29 Jul 2015
Last updated
5 Apr 2021
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1/2 study testing BH4 and Vasculopathy assessment in people with Rheumatologic Disease, run by VA Office of Research and Development at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 5 Apr 2021. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this combined phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 5 Apr 2021). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Flow Mediated Dilatation (FMD)-Diameter of Artery (time frame: FMD was obtained on a single day at two different time points (after placebo and intervention) after a 5 day washout period.). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 Apr 2021.

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