ClinicalTrials.gg
RecruitingNCT05734404Updated Jan 23, 2026

Longitudinal Study for Central Nervous System Vasculitis

An observational study in Central Nervous System Vasculitis, CNS Vasculitis and CNSV, sponsored by University of Pennsylvania. Recruiting at 6 sites in 2 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-01-23.

Sponsored by University of Pennsylvania · Observational

From the registry’s dates

  • Started Mar 2023; still recruiting 3 years 8 months later.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
40
Ages
18 Years and older
Sex
All
01

Study summary

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.

Read the 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.

02

Conditions studied

  • Central Nervous System Vasculitis
  • CNS Vasculitis
  • CNSV
  • Vasculitis

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03

In context

Vasculitis

170 studies on the registry are indexed under Vasculitis; 46 are open to participants now.

This study's planned enrollment of 40 is below the median of 147 across 77 observational studies indexed under Vasculitis.

Browse Vasculitis studies →

Lead sponsor

University of Pennsylvania is the lead sponsor of 1,668 studies on the registry; 235 are open to participants now.

Of its 158 completed or terminated interventional studies of FDA-regulated products, 109 (69%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
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.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

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

Exclusion Criteria:

i. Unwilling to sign .

Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
40 participants (estimated)
Patient registry
No
06

What researchers measure

Primary outcomes

  1. Evaluate the pathogenesis of central nervous system vasculitis using disease history.

    To study the manner of development of disease in patients affected with central nervous system vasculitis.

    Time frame: Study completion; from baseline through month 36.

Secondary outcomes

  1. PROMIS Questionnaires

    Questions will ask about Cognition function on the PROMIS short form.

    Time frame: Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36

  2. PROMIS Questionnaires

    Questions will ask about depression on the PROMIS short form.

    Time frame: Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36

  3. PROMIS Questionnaires

    Questions will ask about fatigue on the PROMIS short form.

    Time frame: Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36

  4. PROMIS Questionnaires

    Questions will ask about Ability to participate in social roles and activities on the PROMIS short form.

    Time frame: Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36

  5. PROMIS Questionnaires

    Questions will ask about Upper extremity function on the PROMIS short form.

    Time frame: Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36

  6. PROMIS Questionnaires

    Questions will ask about lower extremity function on the PROMIS short form.

    Time frame: Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36

  7. PROMIS Questionnaires

    Questions will ask about Global Health (physical) on the PROMIS short form.

    Time frame: Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36

  8. PROMIS Questionnaires

    Questions will ask about Global Health (mental) on the PROMIS short form.

    Time frame: Baseline, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36

07

Study locations

6 of 6 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 23, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05734404
Responsible party
Sponsor
First posted
Feb 21, 2023
Start date
Mar 1, 2023
Primary completion
Dec 31, 2030 (estimated)
Completion
Dec 31, 2030 (estimated)
Last update
Jan 23, 2026

Study contacts

Carol McAlear
Contact
cmcalear@upenn.edu
7813214567
Rula Hajj-Ali, MD
principal investigator · The Cleveland Clinic
Leonard Calabrese, MD
principal investigator · The Cleveland Clinic
Peter Merkel, MD
principal investigator · University of Pennsylvania

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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