The Study of Safety and Preliminary Efficacy of ALT001 in Patients With MultIple System Atrophy-Cerebellar Type (SPRITE-C)

March 31, 2026 updated by: yilong Wang
This is a single-center, prospective, randomized, open-label, blinded outcome assessment (PROBE) study. At the end of the PROBE study, patients who have completed the study may opt to enter the open-label extension (OLE) study. The objective of the study is to evaluate the safety, tolerability and potential preliminary efficacy of ALT001 in the treatment of patients with multiple system atrophy-cerebellar type (MSA-C).

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Multiple system atrophy (MSA) is a progressive neurodegenerative disorder characterized by a blend of autonomic dysfunction, Parkinson's syndrome, and cerebellar syndrome. The incidence of MSA ranges from 1.9 to 4.9 per 100,000 individuals, with an average age of onset of 56.2 years. Among individuals aged 50 years and older, the prevalence stands at 3.0 per 100,000. The mean age of MSA onset is 56.2 years, and the median survival ranges from 6.2 to 7.5 years. The MSA-C subtype is associated with a poorer prognosis due to its predominant involvement of the cerebellum and brainstem. In patients with MSA-C, gait and balance disturbances manifest early, leading to nearly 50% of patients requiring a walking aid or physical assistance for ambulation within three years of motor symptom onset. Within five years, 60% of patients become wheelchair-dependent, and after six to eight years, most are completely bedridden, severely impacting their quality of life. Treating MSA-C, a rare neurodegenerative condition, remains a significant challenge. Current symptomatic and supportive therapies fall short of meeting the treatment requirements of MSA-C patients. Furthermore, potential adverse effects and disease progression factors restrict the use of certain drugs, highlighting the critical need for the development of disease-modifying or neuroprotective agents to decelerate disease advancement. "ALT001, a nerve repair protein created by Darwin Origin (Hubei) Biopharmaceutical Co.LTD, is derived from cellular exosomes, a set of specific microenvironmental protein polymers secreted by stem cells under emergency conditions. It boasts selective assembly, targeted delivery, highly efficient tissue repair, exceptional safety, chemical stability, and convenient storage. Previous basic research has indicated ALT001's potential for promoting endogenous neural tissue repair, exhibiting significant neuroprotective and neurorestorative effects in animal models. Therefore, building upon the ongoing study in patients with the MSA-parkinsonian subtype, this project further initiates a single-center, prospective, randomized, open-label, blinded endpoint evaluation (PROBE) study, followed by an open-label extension (OLE) study, specifically targeting patients with the MSA-C subtype. The objectives are to evaluate the safety, tolerability, and potential preliminary efficacy of ALT001 in treating MSA-C patients. This study aims to recruit 20 MSA-C subtype patients aged between 30 and 75 years. The visit content at each stage of this study includes vital signs, neurological examination, laboratory tests (such as routine blood test, blood biochemical examination, coagulation test, etc.), imaging examinations (such as MRI, bladder ultrasound), neurological assessments (such as unified multiple system atrophy rating scale [UMSARS], composite autonomic symptom score [COMPASS], scale for the assessment and rating of ataxia[SARA], quick MSA quality of life questionnaire [MSA-QoL], mini-mental state examination [MMSE]), and cerebrospinal fluid collection. Different stages of the study focus on monitoring patients' concomitant medications, adverse events, and serious adverse events. Detailed follow-up is conducted at the end of each treatment period, with face-to-face visits at specific time points. Additionally, researchers are required to promptly report and manage events when patients develop new neurological symptoms or suspicious events. The follow-up content of the study includes treatment and follow-up assessments at multiple stages. Initially, comprehensive physical examinations, laboratory tests (including blood, urine tests, etc.), multidimensional scoring assessments (such as UMSARS, COMPASS, SARA, MSA-QoL), and brain examinations through imaging techniques such as 3T MRI are performed on subjects at baseline. Subsequently, subjects enter three treatment periods and follow-up stages lasting a total of 90 days, with daily monitoring of vital signs, cerebrospinal fluid collection, laboratory tests, and adverse event documentation in each stage. Follow-up during the Open-Label Extension (OLE) phase (from day 90 to day 165 post-randomization) continues monitoring of vital signs, laboratory tests, and adverse event recording. At the follow-up visits on day 90, day 180, and day 360, comprehensive physical examinations, laboratory tests, gait analysis, bladder ultrasound, MRI, and repeat UMSARS, COMPASS, SARA, MSA-QoL scoring are conducted. Additionally, if patients experience new neurological symptoms or suspicious events, additional visits will be carried out, and researchers are required to submit and interpret relevant data within 72 hours of the event occurrence.The protocol of this study has been approved by the Ethics Committee of Beijing Tiantan Hospital. All participants will provide written informed consents before entering the study.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
20

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Early Phase 1

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 Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

  • Name: Yahui Zhu
  • Phone Number: 8613439182912

Study Locations

  • China
    • Beijing Municipality
      • Beijing, Beijing Municipality, China, 100070
        • Beijing Tiantan Hospital

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • 1. Age between 30 and 75 years inclusive, either sex;
  • 2. Clinically established or clinically probable MSA-C as defined by the 2022 MDS diagnostic criteria for multiple system atrophy;
  • 3. Duration of MSA-C-related motor symptoms, including ataxia, no longer than 5 years;
  • 4. Score ≤ 3 on Item 14 of the Unified Multiple System Atrophy Rating Scale (UMSARS) Part II (motor examination);
  • 5. Estimated life expectancy ≥ 1 year as assessed by the investigator;
  • 6. Voluntary participation in this study and provision of written informed consent

Exclusion Criteria:

  • 1. Presence of other diseases that may cause ataxia at screening (e.g., infectious diseases, immune-mediated diseases, tumors, paraneoplastic conditions, hereditary disorders, trauma, nutritional deficiencies, toxic exposure, or other neurodegenerative diseases);
  • 2. Dementia indicated by the Mini-Mental State Examination (MMSE) at enrollment (score ≤17 for illiterate individuals, ≤20 for primary school education, or ≤24 for junior high school or above) or a prior definitive diagnosis of dementia;
  • 3. Evidence of other central nervous system pathologies on brain MRI at screening suggesting a diagnosis of neurodegenerative diseases other than MSA; or other significant pathological findings on brain MRI at screening, including but not limited to: cerebral hemorrhage, acute cerebral infarction, aneurysm, vascular malformation, infectious lesions, brain tumors, or other space-occupying lesions (meningiomas or arachnoid cysts with a maximum diameter <1 cm do not require exclusion);
  • 4. Presence of immune-mediated diseases that are inadequately controlled or require treatment with biologic agents;
  • 5. Known history of allergies to biologic agents, such as proteins or cell-based products;
  • 6. Receipt of any vaccination within the past 1 month;
  • 7. Patients with a prior definitive diagnosis of malignancy or those currently receiving anti-tumor drug therapy;
  • 8. Patients with a prior definitive diagnosis of epilepsy or those currently taking anti-epileptic drugs;
  • 9. Presence of lumbar spine diseases or deformities, or other contraindications to lumbar puncture;
  • 10. Coagulation abnormalities at enrollment (e.g., platelet count <100 × 10⁹/L; prothrombin time [PT] >3 seconds), a prior diagnosis of coagulation disorders such as hemophilia, or current use of two or more antiplatelet agents;
  • 11. Contraindications to MRI (e.g., claustrophobia, implanted cardiac pacemaker, or ferromagnetic metal);
  • 12. Concurrent severe hepatic insufficiency, renal insufficiency, or severe cardiac insufficiency (severe hepatic insufficiency defined as ALT ≥1.5 times the upper limit of normal or AST ≥1.5 times the upper limit of normal; severe renal insufficiency defined as serum creatinine [CRE] ≥1.5 times the upper limit of normal or estimated glomerular filtration rate [eGFR] <40 mL/min/1.73 m²; severe cardiac insufficiency defined as NYHA class 3-4), or any significant abnormalities on physical examination, vital signs, laboratory tests, or electrocardiogram that, in the investigator's opinion, require further examination or treatment, or may interfere with the study procedures or safety;
  • 13. Active hepatitis B infection (positive for hepatitis B surface antigen, recurrent/persistent ALT elevation, positive serum HBV DNA, or serum HBV DNA >2 × 10⁵ IU/mL);
  • 14. Positive for hepatitis C virus antibody or a history of positive test results;
  • 15. Positive for HIV or a history of positive test results;
  • 16. Patients with a history of alcohol or substance abuse, or alcohol or substance dependence within the past 2 years;
  • 17. Diagnosis of psychiatric disorders, severe anxiety, severe depression, or obvious suicidal ideation according to DSM-V diagnostic criteria;
  • 18. Patients who are pregnant, lactating, or have the potential to become pregnant, or those planning a pregnancy;
  • 19. Current participation in other interventional trials or use of other investigational biologic agents, drugs, or devices, or use of other investigational drugs within the past 1 month or within 5 half-lives of the drug;
  • 20. Inability to comply with follow-up assessments due to other reasons;
  • 21. Patients deemed by the investigator to be unsuitable for participation in this study.

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

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Intervention group
Intrathecal administration combined with intravenous administration of ALT001 was given to each MSA patient in the intervention group, with intrathecal administration on days 1, 31 and 61 and intravenous administration on days 2 to 14, 32 to 44±3 and 62 to 74±5, and treatment was given once a day. intrathecal administration: 8 mL sodium chloride injection + ALT001 (130 μg/branch) for intrathecal administration, which was completed in about 5 minutes; intravenous administration: ALT001 (130 μg/branch) was dissolved in 100 ml sodium chloride injection, which was completed in about 30-40 minutes. After completion of the above treatments and 90±7 days of follow-up, all subjects entered the OLE study phase. During this period, all participants were given the option of continuing to receive 3 phases (on Days 91 to 104±7, Days 121 to 134±7, and Days 151 to 164±7) of intravenous ALT001 administration (14 consecutive days of ALT001 130 μg qd i.v. in each phase).
Drug: ALT001
Intrathecal administration combined with intravenous administration of ALT001 was given to each MSA patient in the intervention group, with intrathecal administration on days 1, 31 and 61 and intravenous administration on days 2 to 14, 32 to 44±3 and 62 to 74±5, and treatment was given once a day. intrathecal administration: 8 mL sodium chloride injection + ALT001 (130 μg/branch) for intrathecal administration, which was completed in about 5 minutes; intravenous administration: ALT001 (130 μg/branch) was dissolved in 100 ml sodium chloride injection, which was completed in about 30-40 minutes. After completion of the above treatments and 90±7 days of follow-up, all subjects entered the OLE study phase. During this period, all participants were given the option of continuing to receive 3 phases (on Days 91 to 104±7, Days 121 to 134±7, and Days 151 to 164±7) of intravenous ALT001 administration (14 consecutive days of ALT001 130 μg qd i.v. in each phase).
No Intervention: No intervention group
Each MSA-C patient in the blank control group received only basic treatment with no trial-related treatment. After completion of the above treatments and 90±7 days of follow-up, all subjects entered the OLE study phase. During this period, all participants were given the option of continuing to receive 3 phases (on Days 91 to 104±7, Days 121 to 134±7, and Days 151 to 164±7) of intravenous ALT001 administration (14 consecutive days of ALT001 130 μg qd i.v. in each phase).

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
The incidence of investigator-reported adverse events (AEs) and serious adverse events (SAEs)
Time Frame: Day 90±7 after randomization
The incidence of investigator-reported adverse events (AEs) and serious adverse events (SAEs)
Day 90±7 after randomization
The incidence of changes in clinical laboratory test parameters, changes in vital signs, neurological examination abnormalities and ECG abnormalities
Time Frame: Day 90±7 after randomization
Laboratory tests include: routine blood test, coagulation test, blood biochemical examination, urinalysis (note that abnormal changes in laboratory test results may need to be reviewed to further determine and assess their relevance to the study). Vital signs include: abnormal body temperature (≥38℃ or ≤35℃), blood pressure (systolic blood pressure ≥180mmHg or <90mmHg), respiration (>24 beats/min and other rhythm abnormalities), and heart rate (>100 beats/min or <60 beats/min).
Day 90±7 after randomization

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Changes in the unified multiple system atrophy rating scale (UMSARS) part scores, sum of part 1 and 2 scores
Time Frame: Day 15, 45±3, 75±5, 90±7, 180±14, and 360±14 after randomization
The Unified Multiple System Atrophy Rating Scale (UMSARS) comprises four sections. Part I is the "Historical Review," consisting of 12 items that evaluate impairment in activities of daily living as reported by the patient. Each item is scored from a minimum of 0 points (normal) to a maximum of 4 points (severe disability), resulting in a total score range for this section of 0 to 48. Part II is the "Motor Examination," which assesses motor impairment based on clinical examination. It contains 14 items, each also scored from a minimum of 0 (normal) to a maximum of 4 (severe disability), yielding a total score range of 0 to 56. Part III is the "Autonomic Examination." Part IV is the "Global Disability Scale," a single-item scale used to assess the patient's overall level of disability, with scores ranging from a minimum of 1 (completely independent) to a maximum of 5 (totally bedridden).
Day 15, 45±3, 75±5, 90±7, 180±14, and 360±14 after randomization
Changes in the scale for the assessment and rating of ataxia (SARA)
Time Frame: Day 15, 45±3, 75±5, 90±7, 180±14, and 360±14 after randomization
The Scale for the Assessment and Rating of Ataxia (SARA) is a semi-quantitative clinical instrument designed to quantify the severity of cerebellar ataxia, with total scores ranging from 0 (no ataxia) to 40 (most severe ataxia). The scale comprises eight items that reflect progressively increasing functional impairment, assessing gait (0-8 points), stance (0-6 points), sitting (0-4 points), speech disturbance (0-6 points), finger chase (0-4 points), nose-finger test (0-4 points), fast alternating hand movements (0-4 points), and heel-knee-shin slide (0-4 points). For the upper and lower limb items, both sides are assessed separately, and the mean score is calculated for inclusion in the total score. SARA demonstrates good reliability and validity and is commonly used in clinical practice to evaluate the severity of ataxia and monitor disease progression.
Day 15, 45±3, 75±5, 90±7, 180±14, and 360±14 after randomization
Changes in the composite autonomic symptom score (COMPASS) scores
Time Frame: Day 15, 45±3, 75±5, 90±7, 180±14, and 360±14 after randomization
The Composite Autonomic Symptom Score (COMPASS) is a revised version of the 169-item Autonomic Symptom Profile assessing 11 domains of autonomic function, to the 31-item COMPASS, now assessing six domains: orthostatic hypotension (maximum score 10), vasomotor (maximum score 6), secretomotor (maximum score 7), gastrointestinal (maximum score 28), bladder (maximum score 9), and pupillomotor functions (maximum score 15). Scores from each component are recorded and a weighted total score is calculated. Higher scores on this scale indicate more severe clinical symptoms related to autonomic dysfunction. It is a validated, easy-to-use self-assessment instrument designed for clinical autonomic research and practice.
Day 15, 45±3, 75±5, 90±7, 180±14, and 360±14 after randomization
Changes in the incidence of orthostatic hypotension
Time Frame: Day 15, 45±3, 75±5, 90±7, 180±14, and 360±14 after randomization
Changes in the incidence of orthostatic hypotension in patients on days 15, 45±3, 75±5, 90±7, 180±14, and 360±14 after randomization as measured by recumbent-upright blood pressure monitoring/24-hour ambulatory blood pressure monitoring/head-upright tilt test.
Day 15, 45±3, 75±5, 90±7, 180±14, and 360±14 after randomization
Changes in quick MSA quality of life questionnaire (MSA-QoL)
Time Frame: Day 90±7, 180±14, and 360±14 after randomization
The Quick MSA Quality of Life questionnaire (Quick MSA-QoL) is a concise, patient-reported outcome measure derived and validated from the original 40-item MSA-QoL scale. It is designed to reduce the completion burden for patients with multiple system atrophy (MSA) while enhancing data quality. This unidimensional scale comprises 15 items covering core domains, including motor function, non-motor symptoms, and emotional/social functioning. Each item offers five response options: no problem, mild problem, moderate problem, severe problem, and extreme problem. The total score of the scale ranges from 0 (minimum) to 60 (maximum). A higher total score indicates greater impairment in health-related quality of life.
Day 90±7, 180±14, and 360±14 after randomization
Changes in immunological indices (lymphocyte subpopulation)
Time Frame: Day 15, 30±3, 45±3, 60±5, 75±5, 105±7, 135±7, and 165±7 after randomization
Changes in immunological indices (lymphocyte subpopulation) on days 15, 30±3, 45±3, 60±5, 75±5, 105±7, 135±7, and 165±7 after randomization. Lymphocyte subsets include CD3+%, CD3+CD4+%, and CD3+CD8+%, among others.
Day 15, 30±3, 45±3, 60±5, 75±5, 105±7, 135±7, and 165±7 after randomization
Variation of three-dimensional gait analysis parameters under multitasking
Time Frame: Day 90±7, 180±14, and 360±14 after randomization
Changes in three-dimensional gait analysis parameters under multitasking in patients on day 90±7, 180±14, and 360±14 after randomization. The main content of three-dimensional gait analysis is gait speed (m/s). The gait speed of participants was measured using a three-dimensional gait analyzer at various follow-up time points.
Day 90±7, 180±14, and 360±14 after randomization

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Changes in postvoid residual urine volume (bladder ultrasound)
Time Frame: Day 90±7, 180±14, and 360±14 after randomization
Changes in postvoid residual urine volume (ml) (bladder ultrasound) in patients on day 90±7, 180±14, and 360±14 after randomization
Day 90±7, 180±14, and 360±14 after randomization
Changes in plasma biomarkers (NFL, α-syn, GFAP)
Time Frame: Day 15, 30±3, 60±5, 90±7, 180±14, and 360±14 after randomization
Changes in NFL (pg/ml), α-syn (pg/ml), GFAP (pg/ml) in plasma on days 15, 30±3, 60±5, 90±7, 180±14, and 360±14 after randomization. NFL (Neurofilament Light Chain) is a marker of axonal injury, reflecting the degree of neurodegeneration. α-syn (α-Synuclein) is a pathological hallmark protein in synucleinopathies like Parkinson's disease. GFAP (Glial Fibrillary Acidic Protein) indicates astroglial activation, suggesting CNS damage or inflammation.
Day 15, 30±3, 60±5, 90±7, 180±14, and 360±14 after randomization
Changes in cerebrospinal fluid biomarkers (α-Syn SAA, NFL, α-syn, GFAP)
Time Frame: Day 31±3 and 61±5 after randomization
Changes in α-Syn SAA, NFL (pg/ml), α-syn (pg/ml), GFAP (pg/ml) in cerebrospinal fluid on days 31±3 and 61±5 after randomization. α-Syn SAA enables ultrasensitive quantification of α-synuclein for early diagnosis of synucleinopathies. NFL is a marker of axonal injury, indicating neurodegeneration severity. α-syn is the pathological hallmark protein in synucleinopathies. GFAP indicates astroglial activation, reflecting CNS damage or inflammation.
Day 31±3 and 61±5 after randomization
Changes in 3T MRI imaging features
Time Frame: Day 90±7 after randomization
Longitudinal change rate of pontine volume (or AP diameter); longitudinal change rate of middle cerebellar peduncle (MCP) volume (or transverse diameter); longitudinal change rate of cerebellar white matter volume.
Day 90±7 after randomization
Changes in fMRI (BOLD)
Time Frame: Day 90±7 after randomization
Changes in fMRI (BOLD) on days 90±7 after randomization. Main indice of resting-state BOLD is ALFF. ALFF reflects the intensity of spontaneous neural activity in local brain regions. Higher ALFF values indicate more vigorous spontaneous neural activity in the corresponding brain region at rest; conversely, lower ALFF values suggest relatively reduced neural activity in that region.
Day 90±7 after randomization
Changes in the incidence of investigator-reported adverse events (AEs) and serious adverse events (SAEs) within the group of patients who received the experimental treatment during the OLE study period
Time Frame: Day 120±7, 150±7, 180±14, and 360±14after randomization
Changes in the incidence of investigator-reported AEs and SAEs within the group of patients who received the experimental treatment during the OLE study period, as well as the incidence of investigator-reported AEs and SAEs between the groups of patients who received the experimental treatment and those who did not.
Day 120±7, 150±7, 180±14, and 360±14after randomization

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
yilong Wang

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Yilong Wang, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
  • Principal Investigator: Tao Feng, Beijing Tiantan Hospital, Capital Medical University, Beijing, China

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 (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
April 6, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
January 31, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 30, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
March 12, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 31, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
April 7, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 7, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 31, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
March 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • KY2026-049-01
  • HX-A-2025121 (Other Identifier: National Medical Center for Neurological Diseases Office)

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

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