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The Efficacy of DL-NBP in Patients With Mild Subcortical Ischemic Vascular Dementia
The Efficacy of DL-3-n-butylphthalide (DL-NBP) on the Cognitive Function and Vascular Regulation in Patients With Mild Vascular Dementia (VaD) Caused by Subcortical Ischemic Vascular Disease (SIVD)
Lead sponsor
Asset
Butylphthalide
Listed sites
1
Recruiting sites
1
Enrollment
64
estimated
Study population
Vascular cognitive impairment / dementia
Key I/E criteria
•MMSE 15•MoCA ≤26•Study partner/caregiver required
Primary endpoints
•Auditory Verbal Learning Test (AVLT) at endpoint and change•Brief Visuospatial Memory Test-Revised (BVMT-R) at endpoint and change•Digital span (DS) at endpoint and change
Footprint
Where this trial recruits
Site locations as reported to ClinicalTrials.gov. Site count is not enrollment count; per-site enrollment is not available from source.
Identifiers
Registered as
Timeline
Milestones
Assets
Drug assets
Study populations
Who this study enrolls
Eligibility
Who can enroll
Inclusion criteria
1. Patients meet the criteria of major neurocognitive disorder in the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5);
2. Patients aged with 50-80 years, years of education no less than 3, an MMSE range of 15~26, an MoCA < 26, an Hamilton Depression Scale (HAMD) < 17;
3. The MRI (one research dedicated machine 3.0 T) features satisfy subcortical small vessel disease, including (1) multiple (>=3) supratentorial subcortical lacunes (3-20 mm in diameter), with/without white matter hyperintensities (WMH) of any degree; (2) moderate to severe WMH (score>= 2 according to the Fazekas rating scale in either periventricular region or deep white matter) with/without lacunes; (3) one or more strategically located subcortical small infarcts in the deep grey matters;
4. Patients or legal representative should sign the informed consent and have a reliable caregiver
Exclusion criteria
1. Cognitive impairment caused by other central nervous system diseases, such as AD, dementia with Lewy body, frontal-temporal lobe degeneration, etc;
2. Cognitive impairment due to other conditions, such as severe depression, vitamin B 12 deficiency, abnormal thyroid function, etc;
3. Alcoholism, drug abuse or other conditions influenced the evaluation of cognition;
4. Patients unable to undertake MRI assessment.
5. Patients with a history of other severe disease such as epilepsy, myocardial infarction or heart failure will be excluded;
6. Administration of other investigational drugs, psychotropic drugs, drugs with psychiatric side effects, and oral anticoagulants are not allowed
Endpoints (23)
What's being measured
Protocol endpoints and posted registry outcome measures, grouped into outcome categories. Composite endpoints show their component event types. Standard codes (LOINC, SNOMED CT) are shown where available.
Coverage by outcome category
Global cognition
3 endpointsMini-Mental State Examination (MMSE) at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
Mini-Mental State Examination (MMSE)
change from baseline, improvement
Montreal Cognitive Assessment (MoCA) at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
Montreal Cognitive Assessment (MoCA)
change from baseline, improvement
Global function at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
change from baseline, improvement
Memory
2 endpointsAuditory Verbal Learning Test (AVLT) at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
change from baseline, improvement
Brief Visuospatial Memory Test-Revised (BVMT-R) at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
change from baseline, improvement
Executive function / language
8 endpointsDigital span (DS) at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
change from baseline, improvement
Symbol Digit Modalities Test (SDMT) at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
change from baseline, improvement
Trail Making Test-A (TMT-A) at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
change from baseline, improvement
TMT-B at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
change from baseline, improvement
Stroop test at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
change from baseline, improvement
Verbal fluency test at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
change from baseline, improvement
Boston Naming Test (BNT) at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
change from baseline, improvement
Controlled Oral Word Association Test (COWAT) at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
change from baseline, improvement
Function / daily living
1 endpointActivity of daily living (ADL) at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
change from baseline, improvement
Behavior / neuropsychiatric
3 endpointsNeuropsychiatric Inventory (NPI) at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
Neuropsychiatric Inventory (NPI)
change from baseline, improvement
Hamilton Depression Scale (HAMD) at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
change from baseline, improvement
Geriatric Depression Scale (GDS) at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
change from baseline, improvement
Neuroimaging
4 endpointsTranscranial Doppler (TCD) at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
change from baseline, improvement
Carotid duplex ultrasonic (CDU) at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
change from baseline, improvement
Arterial spin labeling (ASL) MRI at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
change from baseline, improvement
White matter hyperintensities (WMH) at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
change from baseline, improvement
Other (unclassified)
2 endpointsBenton Judgment of Line Orientation (JLO) at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
change from baseline, improvement
Regulation of endothelial progenitor cell at endpoint and change from baseline
Time frame:48 weeks post-dose and change from baseline
change from baseline, improvement
Provenance
Sources
Trial facts come from public ClinicalTrials.gov records. Endpoint categories are Delfa's classification of those records, not a ClinicalTrials.gov field. All figures reflect the July 21, 2026 snapshot.