Near-infrared Light Therapy Device for Mild-Moderate Alzheimer's Disease (NirsCure-03A)

A Multicenter, Randomized, Double-Blind, Sham-Controlled Study on The Efficacy And Safety of Near-Infrared Light Therapy Device in Participants With Mild-Moderate Alzheimer's Disease (NirsCure-03A)

This study is a multicenter, randomized, double-blind, placebo (sham device)-controlled clinical trial.

A total of 320 patients with mild to moderate Alzheimer's disease (AD) are planned to be enrolled. Central stratified block randomization will be applied, with stratification based on disease severity (mild vs. moderate) and PET subgroup participation status (yes vs. no). Participants will be randomly assigned to either the treatment group or control group in a 1:1 ratio. After enrollment, participants will complete the treatment at home. The treatment group will receive therapy using a near-infrared light therapy device, while the control group will use sham device. Both investigators and participants will remain blinded to treatment allocation throughout the study.

Study Overview

• Status: Recruiting
• Conditions: Alzheimer s Disease
• Intervention / Treatment: Device: Sham Device; Device: NirsCure 6000

• Study Type: Interventional
• Enrollment (Estimated): 320
• Phase: Phase 3

Contacts and Locations

• Study Contact: Name: Yi Tang, MD, PhD; Phone Number: +86 13811021432; Email: tangyi@xwhosp.org

Study Locations

• China
  • Beijing Municipality
    • Beijing, Beijing Municipality, China, 100191
      • Recruiting
      • Peking University Third Hospital
      • Contact: Weizhong Xiao, MD, PhD; Phone Number: +86 15611908691
    • Beijing, Beijing Municipality, China, 100053
      • Recruiting
      • Xuanwu Hospital, Capital Medical University
      • Contact: Yi Tang, MD, PhD; Phone Number: +86 13811021432; Email: tangyi@xwhosp.org
    • Beijing, Beijing Municipality, China, 100050
      • Recruiting
      • Beijing Friendship Hospital, Capital Medical University
      • Contact: Yongbo Zhang, MD, PhD; Phone Number: +86 13552909549
    • Beijing, Beijing Municipality, China, 100032
      • Recruiting
      • Peking University First Hospital
      • Contact: Yongan Sun, MD, PhD; Phone Number: +86 13391705678
    • Beijing, Beijing Municipality, China, 100730
      • Recruiting
      • Peking Union Medical College Hospital, Chinese Academy of Medical Sciences
      • Contact: Jing Yuan, MD, PhD; Phone Number: +86 18601105034
  • Hebei
    • Shijiazhuang, Hebei, China, 050000
      • Recruiting
      • Shijiazhuang People's Hospital
      • Contact: Jianping Zhang, MD, PhD; Phone Number: +86 17603116783
  • Inner Mongolia
    • Baotou, Inner Mongolia, China, 014040
      • Recruiting
      • Baotou Central Hospital
      • Contact: Furu Liang, MD, PhD; Phone Number: +86 13664077877
  • Jiangsu
    • Suzhou, Jiangsu, China, 215006
      • Recruiting
      • the First Affiliated Hospital of Soochow University
      • Contact: Qun Xue, MD, PhD; Phone Number: +86 13013813620
    • Suzhou, Jiangsu, China, 215004
      • Recruiting
      • The Second Affiliated Hospital of Soochow University
      • Contact: Chunfeng Liu, MD, PhD; Phone Number: +86 13606210609
  • Shaanxi
    • Xi'an, Shaanxi, China, 710061
      • Recruiting
      • The First Affiliated Hospital Of Xi'an Jiaotong University
      • Contact: Jin Wang, MD, PhD; Phone Number: +86 13572208524
    • Xi'an, Shaanxi, China, 710068
      • Recruiting
      • Shaanxi Provincial People's Hospital
      • Contact: Rui Li, MD, PhD
    • Xi'an, Shaanxi, China, 710038
      • Recruiting
      • Tangdu Hospital, Air Force Medical University
      • Contact: Wei Zhang, MD， PhD; Phone Number: +86 13891955100
  • Shanghai Municipality
    • Shanghai, Shanghai Municipality, China, 200127
      • Recruiting
      • Renji Hospital, Shanghai Jiao Tong University School of Medicine
      • Contact: Qun Xu, MD, PhD; Phone Number: +86 13301679717
    • Shanghai, Shanghai Municipality, China, 200040
      • Recruiting
      • Huashan Hospital, Fudan University
      • Contact: Qianhua Zhao, MD, PhD
    • Shanghai, Shanghai Municipality, China, 200030
      • Recruiting
      • Shanghai Mental Health Center
      • Contact: Xia Li, MD, PhD; Phone Number: +86 13774272543
    • Shanghai, Shanghai Municipality, China, 201399
      • Recruiting
      • Pudong Hospital, Fudan University
      • Contact: Yunxia Li, MD, PhD; Phone Number: +86 13636370312
  • Shanxi
    • Taiyuan, Shanxi, China, 030001
      • Recruiting
      • The First Hospital of Shanxi Medical University
      • Contact: Yang Li, MD, PhD; Phone Number: +86 15035182003
    • Taiyuan, Shanxi, China, 030001
      • Recruiting
      • Shanxi Bethune Hospital
      • Contact: Xiaolei Liu, MD, PhD; Phone Number: +86 13934643261
  • Tianjin Municipality
    • Tianjin, Tianjin Municipality, China, 300052
      • Recruiting
      • General Hospital, Tianjin Medical University
      • Contact: Nan Zhang, MD, PhD; Phone Number: +86 13752128310
    • Tianjin, Tianjin Municipality, China, 300060
      • Recruiting
      • Tianjin Huanhu Hospital
      • Contact: Pan Li, MD, PhD; Phone Number: +86 13114881943
    • Tianjin, Tianjin Municipality, China, 300121
      • Recruiting
      • Tianjin People's Hospital
      • Contact: Meiyun Zhang, MD, PhD; Phone Number: +86 13102017703
  • Zhejiang
    • Hangzhou, Zhejiang, China, 310009
      • Recruiting
      • The Second Affiliated Hospital, Zhejiang University School of Medicine
      • Contact: Baorong Zhang, MD, PhD; Phone Number: +86 13958167260
    • Hangzhou, Zhejiang, China, 310015
      • Recruiting
      • Affiliated Hospital of Hangzhou Normal University
      • Contact: Jinghua Wang, MD, PhD; Phone Number: +86 15068892292

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

1. Male or female participants aged between 50 to 85 years old (inclusive).
2. Participants must have at least 4 years of formal education and be capable of completing cognitive and other protocol-specified assessments.
3. Documented progressive memory decline for ≥12 months prior to screening.
4. Meets the core clinical diagnostic criteria for mild to moderate AD dementia (stages 4-5), according to the National Institute on Aging and the Alzheimer's Association (NIA-AA) 2018 research framework and the AA workgroup 2024 update.

5. Evidence of positive brain amyloid pathology, demonstrated by at least one of the following:

   1. Positive Aβ-PET scan (historical positive result acceptable); or
   2. Positive Cerebrospinal fluid (CSF) Aβ testing (historical positive result acceptable).
6. Mini-Mental State Examination (MMSE) total score between 15 and 26 inclusive (between 12 and 22 for participants with an elementary school education level).
7. Clinical Dementia Rating (CDR) Global of 1 or 2, and the CDR-Memory Box scores ≥ 0.5.
8. If receiving acetylcholinesterase inhibitor or memantine, participants must be on a stable dose for at least 12 weeks prior to baseline.
9. Must have at least one reliable study partner who can accompany the participant to complete daily treatment. The study partner should have a close relationship with the participant and sufficient knowledge to accurately report on cognition, function, behavior, safety, and protocol compliance. The study partner must be able to communicate with study staff via phone or WeChat, attend required on-site visit, provide informed consent to supporting follow-up throughout the study.
10. The participant, study partner, or legally authorized representative voluntarily agrees to participate and provides written informed consent prior to any study procedures.

Exclusion Criteria:

1. Presence of any diagnosis other than AD that could cause dementia or cognitive decline, including but not limited to: vascular dementia; Central nervous system infections (e.g., HIV, neurosyphilis); Creutzfeldt-Jakob disease; Huntington's disease; Parkinson's disease; Lewy body dementia; Traumatic brain injury-related dementia; Dementia caused by physical and chemical factors (e.g., drug toxicity, alcohol intoxication, carbon monoxide poisoning); significant systemic diseases (e.g., hepatic or pulmonary encephalopathy); Intracranial space-occupying lesions (e.g., subdural hematoma, brain tumors); or dementia clearly attributable to endocrine disorders, vitamin deficiencies, or other identifiable causes.

2. Brain MRI demonstrating significant pathological findings, including but not limited to:

   1. More than two infarcts with a diameter > 2 cm, or a single infarct involving critical regions (thalamus, hippocampus, entorhinal cortex, parahippocampal cortex, angular gyrus, or other cortical and subcortical gray matter nuclei);
   2. Extensive white matter hyperintensities (Fazekas score ≥ 3);
   3. Space-occupying lesions such as cysts, abscesses, or brain tumors (e.g., meningiomas or arachnoid cysts). Specifically, meningiomas or arachnoid cysts with a maximum diameter < 1 cm do not require exclusion.
3. History of transient ischemic attack (TIA), stroke, or seizure within 6 months of screening.
4. Hachinski Ischemic Score (HIS) > 4.
5. Hamilton Depression Rating Scale (HAMD-17) total score > 10.
6. Diagnosis of a psychiatric disorder according to the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) at screening, including schizophrenia or other psychotic disorders, bipolar disorder, major depressive disorder, or delirium.
7. Known history or laboratory confirmation of HIV infection or neurosyphilis at screening.
8. Severe cardiovascular disease, including New York Heart Association (NYHA) class III or IV heart function; Severe or unstable angina, or newly developed unstable angina within 3 months prior to screening (with objective clinical evidence such as cardiac enzyme abnormalities or dynamic ST-T changes on electrocardiogram); Acute myocardial infarction within 6 months prior to screening.
9. Severe dysfunction of major organs (heart, lungs, liver, kidneys, etc.), or any medical condition that, in the opinion of the investigator, could render the participant unsuitable for this study or interfere with participation.
10. Current or prior treatment with any anti-amyloid monoclonal antibody (e.g., aducanumab, lecanemab, or donanemab).
11. Prior or planned lymphaticovenous anastomosis (LVA) of the cervical deep lymphatic vessels.
12. Participation in any interventional clinical trial involving a drug or medical device within the 30 days prior to screening, except for observational studies or verified placebo-group participation in a previous interventional trial.
13. History of severe head trauma or implanted cranial devices (e.g., bone screws, bone plates, prior cranial surgery, deep brain stimulators); Contraindications to MRI (e.g., claustrophobia, pacemakers/defibrillators, ferromagnetic metal implants); unwilling to undergo MRI examination.
14. Contraindications to PET or allergy to Aβ-PET tracer (except participants enrolled based solely on CSF Aβ positivity). Participants with uncontrolled abnormal blood glucose, allergy to FDG tracer, or any other investigator-judged contraindications are ineligible for the FDG-PET substudy.

15. History of malignancy within 5 years prior to screening, except for:

    1. Adequately treated basal or squamous cell skin carcinoma, or cervical dysplasia;
    2. Adequately treated Stage I in situ cervical cancer ≥ 2 years prior to screening without recurrence;
    3. Prostate cancer confined to the prostate, adequately treated (e.g., surgery, radiotherapy, or active surveillance), with stable prostate-specific antigen (PSA) levels for ≥ 2 years prior to screening;
    4. Non-metastatic breast cancer, adequately treated and without recurrence.
16. Women who are pregnant, breastfeeding, planning pregnancy, or of childbearing potential not using highly effective contraception.
17. Any other condition that, in the opinion of the investigator, may compromise the participant's safety, interfere with protocol adherence, or confound study results.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Quadruple

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Sham Comparator: Sham device; Device: NirsCure 6000 sham device (once daily for 30 minutes, six times per week)	Device: Sham Device; Sham device (once daily for 30 minutes, six times per week)
Experimental: Near infrared light therapy; Device: NirsCure 6000 Near-infrared light therapy (once daily for 30 minutes, six times per week)	Device: NirsCure 6000; Near-infrared light therapy. Once daily for 30 minutes, six times per week.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Alzheimer's Disease Assessment Scale, cognitive subscale 13 (ADAS-Cog13)	Change from baseline in Alzheimer's Disease Assessment Scale - Cognitive Subscale 13 (ADAS-Cog13) score at 26-Weeks. The ADAS-Cog13 score ranges from 0 to 85, with higher scores indicating greater cognitive impairment.	26 weeks

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Clinical Dementia Rating - Sum of Boxes (CDR-SB)	Change from baseline in Clinical Dementia Rating - Sum of Boxes (CDR-SB) score at 26-Weeks. The CDR-SB score ranges from 0 to 18, with higher scores indicating greater cognitive and functional impairment.	26 weeks
Mini-Mental Status Examination (MMSE)	Change from baseline in Mini-Mental State Examination (MMSE) score at 26-Weeks. The MMSE score ranges from 0 to 30, with higher scores indicating better cognitive function.	26 weeks
Alzheimer's Disease Cooperative Study Activities of Daily Living Scale (ADCS-ADL)	Change from baseline in Alzheimer's Disease Cooperative Study - Activities of Daily Living (ADCS-ADL) score at 26-Weeks. The ADCS-ADL score ranges from 0 to 78, with higher scores indicating better functional ability in activities of daily living.	26 weeks
Integrated Alzheimer's Disease Rating Scale (iADRS)	Change from baseline in Integrated Alzheimer's Disease Rating Scale (iADRS) score at 26-Weeks. The iADRS score ranges from 0 to 144, with higher scores indicating better overall cognitive and functional performance.	26 weeks

Collaborators and Investigators

• Sponsor: Danyang Huichuang Medical Equipment Co., Ltd.

Study record dates

Study Major Dates

• Study Start (Estimated): December 15, 2025
• Primary Completion (Estimated): July 22, 2027
• Study Completion (Estimated): July 22, 2027

Study Registration Dates

• First Submitted: November 21, 2025
• First Submitted That Met QC Criteria: December 1, 2025
• First Posted (Estimated): December 3, 2025

Study Record Updates

• Last Update Posted (Estimated): December 3, 2025
• Last Update Submitted That Met QC Criteria: December 1, 2025
• Last Verified: November 1, 2025

More Information

Terms related to this study

• Other Study ID Numbers: NirsCure-03A

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No