Central Vein Sign: a Diagnostic Biomarker in Multiple Sclerosis (CAVS-MS)
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|ClinicalTrials.gov Identifier: NCT04495556|
Recruitment Status : Recruiting
First Posted : August 3, 2020
Last Update Posted : June 16, 2021
|First Submitted Date||July 23, 2020|
|First Posted Date||August 3, 2020|
|Last Update Posted Date||June 16, 2021|
|Actual Study Start Date||September 11, 2020|
|Estimated Primary Completion Date||June 2024 (Final data collection date for primary outcome measure)|
|Current Primary Outcome Measures
||MRI Outcomes [ Time Frame: Change assessed over 24 months. First scan at baseline (first study visit) and the second scan at 24 months or the last study visit. ]
MRI will be done to assess sensitivity and specificity of the CVS for multiple sclerosis. MRI will be done at baseline or start of the study and at month 24, end of study. Central veins will be counted and lesions will be considered CVS+ using specified criteria. CVS will be determined using Select6, Select3*, and automated lesion analysis with inclusion and exclusion of periventricular lesions.
|Original Primary Outcome Measures||Same as current|
|Current Secondary Outcome Measures
|Original Secondary Outcome Measures
|Current Other Pre-specified Outcome Measures
||Economics outcomes [ Time Frame: Done at all 5 study visits - baseline, month 6, month 12, month 18 and month 24. ]
Health care expenditures will be measured using Healthcare Resource Utilization (HRU) forms. Total costs for patients over the 24-month follow up period will be assessed using information from all 5 study visits. At each encounter, patients will report emergency care visits and inpatient hospitalizations which have occurred within the past 6-months. Costs accrued over each 6-month period will be used to estimate overall 24-month costs.
|Original Other Pre-specified Outcome Measures||Same as current|
|Brief Title||Central Vein Sign: a Diagnostic Biomarker in Multiple Sclerosis|
|Official Title||Central Vein Sign: a Diagnostic Biomarker in Multiple Sclerosis|
The need for improved diagnostic methods in Multiple Sclerosis (MS) is widely recognized. Although Magnetic Resonance Imaging (MRI) is a longstanding tool for detecting MS lesions, diagnostic inaccuracies persist. Up to 20% of people diagnosed with MS (1 in 5) are later found not to have the disease. This is highly consequential, as more than two-thirds of misdiagnosed patients are unnecessarily exposed to risks from disease-modifying therapies, which in rare cases can be life-threatening.
Moreover, the current standard in MS diagnosis - the McDonald criteria, which combine clinical symptoms and MRI findings - were developed from studies in people with typical clinical presentations of MS. This reduces the specificity of these criteria, rendering them uninformative for the nearly half of MS patients who present to neurologists with atypical or nonclassical symptoms.
Timeliness of MS diagnosis is also key, as diagnostic delay is common in cases of relapsing-remitting MS and can carry severe and lifelong consequences.
The CentrAl Vein Sign in MS (CAVS-MS) study has been designed to assess whether Central Vein Sign (CVS) criteria can help address some of these unmet diagnostic needs. It will specifically explore the role of presentation type by enrolling a mixed population of patients with typical clinical presentations (n = 200) and those with atypical presentations, including suggestive MRI findings in the absence of neurologic symptoms (n = 200) across North America.
The CentrAl Vein Sign in MS (CAVS-MS) study seeks to answer whether the central vein sign (CVS) can be used as a sensitive and specific diagnostic marker for a diagnosis of MS. The study will investigate the CVS in a mixed population of participants with typical and atypical clinical presentations including radiological presentations without neurological symptoms.
The CVS is proposed as a diagnostic biomarker with improved sensitivity for a diagnosis of MS, while retaining diagnostic specificity - all in an-easy-to use diagnostic test that can be applied in patients with both typical and atypical disease presentation. There is extensive research demonstrating the ability of the CVS criteria to discriminate MS lesions from common mimickers, such as vascular disease and migraine. However, the CVS has mainly been applied in cross- sectional studies. In addition, the majority of these studies have focused analysis primarily on patients presenting with typical clinical events of demyelination (i.e. a classic Clinically Isolated Syndrome (CIS)). This study will evaluate CVS criteria prospectively in individuals with typical and atypical MS presentations. Aim 1 will examine sensitivity and specificity of CVS criteria in conjunction with, and separate from, the McDonald Criteria. Aim 2 will examine CVS in a population where McDonald criteria explicitly cannot be applied. Because the likelihood of MS is lower in this group, the focus will be on specificity, which is where the unmet need exists.
Although current MS diagnostic criteria are sensitive in most typical cases, the use of the CVS may hasten diagnosis in patients with low lesion numbers and those without dissemination in time. In the past, studies that informed revision of the diagnostic criteria used "clinically definite MS" (defined as two separate clinical events) as the definitive determination of a diagnosis. In the current treatment era, however, clinically definite MS is less relevant, since most patients will be diagnosed after a first clinical event (relapse) and will go on to start treatment prior to even having a second relapse. For this reason, the 2017 McDonald Criteria is being used as the "gold standard" for the proposed study.
Importantly, in the current study the CVS will be applied in a population where the McDonald Criteria are not applicable (atypical presentations) and where currently a significant unmet clinical need exists. Because the studies that informed the diagnostic criteria did not include patients presenting with atypical syndromes, such patients are not covered in the McDonald Criteria path, but are frequently given a diagnosis of MS on the basis of MRI findings. To address this limitation, the presence of CVS as a predictor of development of future clinical events will be examined, within a 24- month period, that would satisfy the 2017 McDonald Criteria. Thus, the results of this study will have a significant impact on both improving sensitivity in those presenting with typical presentations and providing a specific test for MS in those with atypical presentations, thereby avoiding unnecessary costs associated with misdiagnosis. The investigators will leverage the North American Imaging in Multiple Sclerosis Cooperative (NAIMS) to conduct a multicenter study, based on an initial cross-sectional pilot study using the CVS criteria as a diagnostic biomarker for MS.
Patients will be enrolled when presenting to an MS center for diagnostic referral, and they will undergo follow-up at prespecified intervals for 24 months. Brain MRI will be performed at baseline and 24 months, with scans scored on the basis of CVS criteria. T2-weighted fluid-attenuated inversion recovery (FLAIR) imaging will be combined with T2*-weighted segmented echo-planar imaging to enable simultaneous identification of white matter lesions and venous structures.
The primary objective is to determine whether use of CVS criteria allows for an earlier accurate diagnosis of MS in patients who do not meet the McDonald criteria at baseline. The aim is to show that the CVS is a simple and reliable diagnostic biomarker that will show an increase in sensitivity while preserving specificity.
Secondary objectives include the following:
The researchers will also begin exploratory studies of optimal methods for integrating CVS findings into MS diagnostic criteria, along with any resulting healthcare-related cost savings. These initial exploratory analyses will be important to how readily positive findings about the utility of CVS criteria can impact clinical practice. The ultimate goal is to have the CVS incorporated into the MS diagnostic criteria.
|Study Design||Observational Model: Cohort
Time Perspective: Prospective
|Target Follow-Up Duration||Not Provided|
|Sampling Method||Probability Sample|
|Study Population||The study will recruit a total 400 participants. The study will include 200 patients presenting with typical first syndromes and will enroll an additional 200 patients with atypical presentations and radiological suspicion of the disease. Participants will be recruited from the patient populations followed at eleven different sites including: Cleveland Clinic, Johns Hopkins University, University of California San Francisco, University of Texas Austin, University of Colorado Denver, University of Toronto (St. Michael's Hospital), University of Vermont, University of Pennsylvania, Cedars Sinai Medical Center, University of Southern California, and Yale University. Study investigators will confirm eligibility criteria, and participants will then be enrolled into the study.|
|Intervention||Diagnostic Test: MRI
The study will include MRI at baseline (first study visit) and month 24 (final study visit). MRI at month 24 (end of study) will be used to determine McDonald Criteria and final review of CVS.
|Publications *||Not Provided|
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
|Original Estimated Enrollment||Same as current|
|Estimated Study Completion Date||June 2024|
|Estimated Primary Completion Date||June 2024 (Final data collection date for primary outcome measure)|
Inclusion criteria for participants with typical presentations will include:
Inclusion criteria for participants with atypical presentations will include:
Exclusion criteria for both typical and atypical populations will include:
|Ages||18 Years to 65 Years (Adult, Older Adult)|
|Accepts Healthy Volunteers||No|
|Listed Location Countries||Canada, United States|
|Removed Location Countries|
|Other Study ID Numbers||20-063
1U01NS116776-01 ( U.S. NIH Grant/Contract )
|Has Data Monitoring Committee||Yes|
|U.S. FDA-regulated Product||
|IPD Sharing Statement||
|Responsible Party||The Cleveland Clinic|
|Study Sponsor||The Cleveland Clinic|
|PRS Account||The Cleveland Clinic|
|Verification Date||June 2021|