Fornix and NbM as Targets of Stimulation In Alzheimer's Disease

NCT ID: NCT03352739

Last Updated: 2018-01-11

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

30 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-12-01

Study Completion Date

2020-12-01

Brief Summary

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The primary goal of this study is to evaluate the efficacy and safety of the DBS to the fornix/NbM among patients who are diagnosed as AD according to a series of evaluations including cerebrospinal fluid (CSF) biomarkers and molecular imaging examinations; The secondary goal is to compare the efficacy among the two treatment groups of different targets.

Detailed Description

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Conditions

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Alzheimer Disease

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Outcome Assessors

Study Groups

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DBS of the fornix, power on

Group Type EXPERIMENTAL

DBS of the fornix, power on

Intervention Type DEVICE

DBS of bilateral columns of the fornix is performed, with the power of the device on since the 1st month after the implantation. Observations will start at the time when the device is turning on .

DBS system includes:

Pins G102 Implantable Neurostimulator; Pins L301 DBS Electrode; Pins E202 DBS extension lead

DBS of the NbM, power on

Group Type EXPERIMENTAL

DBS of the NbM, power on

Intervention Type DEVICE

DBS of bilateral NbMs is performed, with the power of the device on since the 1st month after the implantation. Observations will start at the time when the device is turning on .

DBS system includes:

Pins G102 Implantable Neurostimulator; Pins L301 DBS Electrode; Pins E202 DBS extension lead

DBS of the fornix, power off

Group Type SHAM_COMPARATOR

DBS of the fornix, power off

Intervention Type DEVICE

DBS of bilateral columns of the fornix is performed, the power of the device is going to keep off during the first 7 months after the implantation. Observations will start after 1 month of the implantation.

DBS system includes:

Pins G102 Implantable Neurostimulator; Pins L301 DBS Electrode; Pins E202 DBS extension lead

DBS of the NbM, power off

Group Type SHAM_COMPARATOR

DBS of the NbM, power off

Intervention Type DEVICE

DBS of bilateral NbMs is performed, the power of the device is going to keep off during the first 7 months after the implantation. Observations will start after 1 month of the implantation.

DBS system includes:

Pins G102 Implantable Neurostimulator; Pins L301 DBS Electrode; Pins E202 DBS extension lead

Control group

The patients are going to prescribe stable dosage of donepezil during observation period without surgical interference.

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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DBS of the fornix, power on

DBS of bilateral columns of the fornix is performed, with the power of the device on since the 1st month after the implantation. Observations will start at the time when the device is turning on .

DBS system includes:

Pins G102 Implantable Neurostimulator; Pins L301 DBS Electrode; Pins E202 DBS extension lead

Intervention Type DEVICE

DBS of the NbM, power on

DBS of bilateral NbMs is performed, with the power of the device on since the 1st month after the implantation. Observations will start at the time when the device is turning on .

DBS system includes:

Pins G102 Implantable Neurostimulator; Pins L301 DBS Electrode; Pins E202 DBS extension lead

Intervention Type DEVICE

DBS of the fornix, power off

DBS of bilateral columns of the fornix is performed, the power of the device is going to keep off during the first 7 months after the implantation. Observations will start after 1 month of the implantation.

DBS system includes:

Pins G102 Implantable Neurostimulator; Pins L301 DBS Electrode; Pins E202 DBS extension lead

Intervention Type DEVICE

DBS of the NbM, power off

DBS of bilateral NbMs is performed, the power of the device is going to keep off during the first 7 months after the implantation. Observations will start after 1 month of the implantation.

DBS system includes:

Pins G102 Implantable Neurostimulator; Pins L301 DBS Electrode; Pins E202 DBS extension lead

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

1. Subjects with informed consent;
2. 45-75 years of age;
3. At least 6 years of education;
4. AD according to the National Institute on Aging and the Alzheimer's Association (NIA-AA) guidelines (McKhann et al., 2011);
5. Clinical Dementia Rating Scale (CDR): 1.0-2.0;
6. Positive findings with amyloid PET imaging;
7. Stable prescription of donepezil (5mg, qd) for at least 3 months, and without any intentions to modify the dosage during the observation period.

Exclusion Criteria

1. Fazekas scale\>2;
2. Neuropsychiatric inventory (NPI) total score ≥10, or any subdomain≥4;
3. Modified Hachinski ischemic score\>4;
4. Young Mania Rating Scale\>11(Young, Biggs, Ziegler, \& Meyer, 1978);
5. Any suicidal tendencies in recent 2 years;
6. Cornell Scale for Depression and Dementia\>10;
7. Familial AD;
8. Abnormal brain structural magnetic resonance imaging (MRI) scan, including hydrocephalus, stroke, structural lesions, etc. that would potentially confound the outcome;
9. Surgical history of the central nervous system;
10. Severe cardiovascular/pulmonary disorders.
Minimum Eligible Age

45 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Beijing Pins Medical Co., Ltd

INDUSTRY

Sponsor Role collaborator

Xuanwu Hospital, Beijing

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Xuanwu Hospital, Capital Medical University.

Beijing, , China

Site Status RECRUITING

Countries

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China

Central Contacts

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Guo-Guang Zhao, M.D.

Role: CONTACT

+86-010-63037023

Facility Contacts

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Peng-Hu Wei, M.D.

Role: primary

+86-18601986863

Other Identifiers

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XuanwuH

Identifier Type: -

Identifier Source: org_study_id

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