One-Time DNA Study for Vasculitis

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Brief Title

One-Time DNA Study for Vasculitis

Official Title

VCRC Genetic Repository One-Time DNA Protocol

Brief Summary

      The purpose of this study is to identify genes that increase the risk of developing
      vasculitis, a group of severe diseases that feature inflammation of blood vessels. Results of
      these studies will provide vasculitis researchers with insight into the causes of these
      diseases and generate new ideas for diagnostic tests and therapies, and will be of great
      interest to the larger communities of researchers investigating vasculitis and other
      autoimmune, inflammatory, and vascular diseases.
    

Detailed Description

      The systemic vasculitides comprise several inflammatory diseases of blood vessels, usually
      arteries, which may cause systemic, multi-organ disease that can result in substantial
      morbidity and increased mortality. Each type of vasculitis is a rare ("orphan") disease.
      However, taken together, vasculitis affects tens of thousands of Americans and is responsible
      for substantial morbidity and mortality and almost one billion dollars per year in hospital
      care alone. While the vasculitides share the trait of vascular inflammation, the unique
      disease phenotypes, clinical courses, differences in prognoses, and responses to therapy
      suggest that important differences exist in pathogenesis. The Vasculitis Clinical Research
      Consortium (VCRC) currently focuses on 6 specific types of vasculitis that were selected to
      represent a balance between unmet medical and scientific needs, prevalence in North America,
      feasibility of study, and an interest in studying a spectrum of small, medium, and large
      vessel vasculitides.

      The great majority of published studies on the genetics of vasculitis have used modest-sized
      cohorts that are only suitable for investigation of a few candidate genes at a time, or to
      detect large effect sizes, so that replicated findings are highly skewed to the HLA region.
      Larger and more ambitious genetic studies in vasculitis are expected to generate numerous
      hypotheses for translational research in gene expression, biochemistry, and molecular
      pathology.

      A one-time collection of clinical data and DNA would substantially increase the sample sizes
      for genetic association studies in all six vasculitides studied in the VCRC. Many patients
      are seen at participating VCRC centers but do not enroll in the Longitudinal Studies. These
      patients often are interested in participating in research studies but cannot return
      frequently for visits, usually due to distance from the VCRC centers. This approach would be
      particularly useful for the rarer forms of vasculitis under study (Takayasu's Arteritis
      (TAK), Polyarteritis Nodosa (PAN), eosinophilic granulomatosis with polyangiitis
      (Churg-Strauss) (EGPA) and also for Giant Cell Arteritis (GCA), since elderly patients have
      been particularly likely to decline participation in the Longitudinal Studies due to travel
      constraints.
    


Study Type

Observational


Primary Outcome

Evaluation of clinical data and linked DNA specimens.


Condition

Eosinophilic Granulomatosis With Polyangiitis (Churg-Strauss)



Publications

* Includes publications given by the data provider as well as publications identified by National Clinical Trials Identifier (NCT ID) in Medline.

Recruitment Information



Estimated Enrollment

1000

Start Date

October 2010

Completion Date

August 2022

Primary Completion Date

August 2022

Eligibility Criteria

        Inclusion Criteria:

        1. Diagnostic criteria for Giant Cell Arteritis Age at disease onset >50 years (required)

          1. New onset or new type of localized pain in the head

          2. Temporal artery abnormality (i.e. temporal artery tenderness to palpation or decreased
             pulsation, unrelated to arteriosclerosis of cervical arteries)

          3. ESR of >40mm in the first hour by the Westergren method

          4. Abnormal artery biopsy (i.e. temporal artery biopsy showing vasculitis characterized
             by a predominance of mononuclear cell infiltration or granulomatous inflammation,
             usually with multinucleated giant cells)

          5. Large Vessel Vasculitis (LVV) by angiogram or biopsy not explained by something else

        Inclusion Criteria:

        2. Diagnostic criteria for Takayasu's Arteritis

          1. Age at disease onset <50 years

          2. Claudication of extremities

          3. Decreased brachial artery pulse (one or both arteries)

          4. Blood pressure difference of >10mm Hg between the arms

          5. Bruit over subclavian arteries or aorta

          6. Arteriogram abnormalities compatible with TAK (includes conventional dye angiography
             or MR angiography or CT angiography)

        Inclusion Criteria:

        3. Diagnostic criteria for Polyarteritis Nodosa Major criteria (not explained by other
        causes) felt by investigator to be due to vasculitis

          1. Arteriographic abnormality

          2. Presence of granulocyte or mixed leukocyte infiltrate in an arterial wall on biopsy

          3. Mononeuropathy or polyneuropathy

        Minor criteria (not explained by other causes) felt by investigator to be due to vasculitis

          1. Weight loss > 4 kg

          2. Livedo reticularis, cutaneous ulcerations, or skin nodules

          3. Testicular pain or tenderness

          4. Myalgias

          5. Diastolic blood pressure > 90 mm Hg

          6. Elevated BUN or serum creatinine levels

          7. Ischemic abdominal pain

        Isolated cutaneous Polyarteritis Nodosa 1. Biopsy-proven cutaneous PAN

        Inclusion Criteria:

        4. Diagnostic criteria for Granulomatosis with Polyangiitis (Wegener's) (GPA) and
        Microscopic Polyangitis (MPA)

          -  Diagnosis of GPA or MPA. Widely accepted diagnostic criteria, as opposed to
             classification criteria or definitions, have not been developed for GPA & MPA.

          -  For diagnosis of GPA meets at least 2 of the following 5 modified ACR criteria:

               1. Nasal or oral inflammation with oral ulcers or nasal discharge with pus or blood

               2. Abnormal chest radiograph with nodules, fixed infiltrates, or cavities

               3. Urinary sediment with microhematuria or red cell casts

               4. Granulomatous inflammation within the wall of an artery or in the perivascular
                  area on biopsy

               5. Antineutrophil cytoplasmic antibody (ANCA) positive by enzyme immunoassay for
                  either PR3- or MPO-ANCA

          -  For diagnosis of MPA, meets the Chapel Hill Consensus Conference Definition for MPA:

               1. Necrotizing vasculitis, with few or no immune deposits, that affects small
                  vessels (i.e., capillaries, venules, arterioles)

               2. Necrotizing arteritis involving small- and medium-sized arteries may be present

               3. Necrotizing glomerulonephritis is very common

               4. Pulmonary capillaritis often occurs

                  Inclusion Criteria:

                  5. Diagnostic criteria for Eosinophilic Granulomatosis with Polyangiitis
                  (Churg-Strauss)

                    1. Asthma

                    2. Peak peripheral blood eosinophilia of >10% of total WBC

                    3. Peripheral neuropathy attributable to vasculitis

                    4. Transient pulmonary infiltrates on chest imaging studies

                    5. Paranasal sinus abnormalities or nasal polyposis

                    6. Eosinophilic inflammation on tissue biopsy

                  If patients have 4 of the above 6 criteria but lack clearcut documentation of
                  small vessel vasculitis, they are also eligible for enrollment.

                  General Exclusion Criteria:

          -  Inability to give informed consent and to sign the consent form

          -  Enrolled in VCRC protocols 5502, 5503, 5504, 5505, 5506, 5522, or 5523

          -  Unwilling to provide blood for DNA collection
      

Gender

All

Ages

7 Years - N/A

Accepts Healthy Volunteers

No

Contacts

Peter Merkel, MD, MPH, , [email protected]

Location Countries

Canada

Location Countries

Canada

Administrative Informations


NCT ID

NCT01241305

Organization ID

VCRC5510

Secondary IDs

U54AR057319-06

Responsible Party

Principal Investigator

Study Sponsor

University of Pennsylvania

Collaborators

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

Study Sponsor

Peter Merkel, MD, MPH, Study Director, University of Pennsylvania


Verification Date

April 2021