Longitudinal Study for Central Nervous System Vasculitis

January 21, 2026 updated by: University of Pennsylvania
Primary central nervous system vasculitis (CNSV) is a potentially fatal, single-organ vasculitis that often involves a spectrum of neurologic complications, including strokes, cognitive and speech impairment, visual loss, dementia, and encephalopathy. The purpose of this study is to establish a research cohort to investigate the disease process, treatments, and patient outcomes in CNSV.

Study Overview

Detailed Description

Primary central nervous system vasculitis (CNSV) is a potentially fatal, single-organ vasculitis that often involves a spectrum of neurologic complications, including strokes, cognitive and speech impairment, visual loss, dementia, and encephalopathy. Originally described in the early 1950s, research in the disease has been slow to progress, largely limited by the rarity of the disease and the lack of biologic materials for basic and translational investigations. To date, the bulk of research in the field has been clinical, largely consisting of retrospective case series, predominately from single sites, focusing on correlations among clinical, imaging, and histopathology data. Collectively these series suggest the existence of clinically-relevant subsets. Such studies, while enhancing our knowledge of this rare disease, are limited by small numbers of patients (especially those confirmed by histopathology), and the near absence of detailed investigations into the biomolecular and immunopathogenic basis of the disease.

Development of this longitudinal cohort and multicenter approach offers the potential to generate new insights, generate new questions, and further our understanding of its natural history, pathophysiology, genetic basis, and discovery of biomarkers to assess disease activity and prognosis.

Study visits will occur every 3 months for this first year, and then annually for two more years. Blood collection will occur at every visit. A physical exam and medical and medication history will at every visit; also, participants will be asked to complete several questionnaires to assess disease activity, health status, and tobacco, alcohol, and drug use.

Study Type

Observational

Enrollment (Estimated)

40

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Individuals with central nervous system vasculitis (CNSV). Enrollment will be sequential and participants will have disease in various stages and of different duration.

Description

Inclusion Criteria:

i. Diagnostic criteria for CNSV

  1. The presence of an acquired and otherwise unexplained neurologic deficit
  2. The presence of either classic angiographic or histopathologic features of angiitis in the CNS
  3. No evidence of systemic vasculitis or any condition that could cause the angiographic or pathologic features

ii. ≥18 years of age

Exclusion Criteria:

i. Unwilling to sign informed consent.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Evaluate the pathogenesis of central nervous system vasculitis using disease history.
Time Frame: Study completion; from baseline through month 36.
To study the manner of development of disease in patients affected with central nervous system vasculitis.
Study completion; from baseline through month 36.

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
PROMIS Questionnaires
Time Frame: Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36
Questions will ask about Cognition function on the PROMIS short form.
Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36
PROMIS Questionnaires
Time Frame: Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36
Questions will ask about depression on the PROMIS short form.
Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36
PROMIS Questionnaires
Time Frame: Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36
Questions will ask about fatigue on the PROMIS short form.
Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36
PROMIS Questionnaires
Time Frame: Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36
Questions will ask about Ability to participate in social roles and activities on the PROMIS short form.
Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36
PROMIS Questionnaires
Time Frame: Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36
Questions will ask about Upper extremity function on the PROMIS short form.
Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36
PROMIS Questionnaires
Time Frame: Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36
Questions will ask about lower extremity function on the PROMIS short form.
Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36
PROMIS Questionnaires
Time Frame: Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36
Questions will ask about Global Health (physical) on the PROMIS short form.
Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36
PROMIS Questionnaires
Time Frame: Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36
Questions will ask about Global Health (mental) on the PROMIS short form.
Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Collaborators

Investigators

  • Principal Investigator: Rula Hajj-Ali, MD, The Cleveland Clinic
  • Principal Investigator: Leonard Calabrese, MD, The Cleveland Clinic
  • Principal Investigator: Peter Merkel, MD, University of Pennsylvania

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 1, 2023

Primary Completion (Estimated)

December 31, 2030

Study Completion (Estimated)

December 31, 2030

Study Registration Dates

First Submitted

February 8, 2023

First Submitted That Met QC Criteria

February 8, 2023

First Posted (Actual)

February 21, 2023

Study Record Updates

Last Update Posted (Actual)

January 23, 2026

Last Update Submitted That Met QC Criteria

January 21, 2026

Last Verified

January 1, 2026

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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