NCT06965062Recruiting
Cervical Lymphatico-Venous Bypass for Treatment of Alzheimer's Disease - Proof of Concept Study (CLyVeB-AD-1 Study)
Source: ClinicalTrials.gov · Last updated 13 Jan 2026
Brief summary (registry, in English)
Alzheimer's disease (AD), one of the most common causes of dementia in Singapore and the developed world, is a neurodegenerative disorder with high socioeconomic impact. Accumulation of neurotoxic proteins (ie. amyloid, tau) are purported to lead to neuroinflammation, synaptic dysfunction and cognitive decline. The available pharmacotherapy provide limited symptomatic control, modest effect on disease progression with significant risk of side effects. Patients with AD eventually run out of effective pharmacotherapy and deteriorate. Recent evidence implicated the glymphatic system, meningeal lymphatics of the brain, and downstream drainage to the cervical lymphatic system in the accumulation of neurotoxic proteins in AD. This presented the opportunity for extra-cranial intervention, and has since been demonstrated in preclinical models. Based on these development, Xie and colleagues pioneered the deep cervical lymph node to venous bypass (DCLNV-BP) procedure with very promising early outcomes. The observed improvement had been attributed to enhanced clearance of the neurotoxic proteins. Knowledge gap and clinical equipoise remain, and clinical trials are required to understand the safety, mechanism of action, patient selection, and long-term outcomes. In this proof of concept study, the investigators aim to assess safety and preliminary efficacy of DCLNV-BP in AD. An approach using objective clinical assessments, biomarkers and neuroimaging, to assess safety, evaluate preliminary efficacy and elucidate the possible mechanism underlying the observed effects, is undertaken. Since there are limited effective treatment for AD, this procedure is potentially ground breaking if it proves to halt progression or even improve patients' cognition, function and behaviour. Indirectly, this will have enormous health economic benefit for Singapore and the developed world that is facing the silver tsunami. Findings from this pilot study will lay the groundwork for future trials and research collaboration in AD and other neurodegenerative diseases.
- Status (registry)
- Recruiting
- Study type
- Interventional
- Enrollment
- 10 (estimated)
- First submitted
- 17 Jan 2025
- Start date
- 1 Apr 2025
- Primary completion date
- 31 Mar 2028
- Lead sponsor
- Vincent Tay Khwee Soon
- Diseases
- Alzheimer disease
- NCT number
- NCT06965062
What you commit to
- Study type: Interventional
- Planned participants: 10
- From 1 Apr 2025 to the primary completion date, 31 Mar 2028
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Cognitive decline due to prior infection or autoimmune diseases;
- Previous neck lymph node surgery or irradiation;
- Any contraindications to surgery or lumbar puncture
Other illness
- History of major cerebrovascular events or significant cardiovascular diseases;
- Active infection or malignancy;
- Any contraindication to MRI/PET scan (eg. metallic implant that are not MRI-safe, known radiotracer allergy)
- Experimental Alzheimer's Disease treatment within the past 6 months. • Current use of monoclonal antibodies treatment (eg. lecanemab/donanemab)
Other
- Inability to have the head turned passively by at least 40 degrees;
Who the study is looking for
- Diagnosis of mild-moderate Alzheimer's disease (based on NIA-AA criteria);
- Mini-Mental State Examination (MMSE) score 10-22;
- Both participants and caregiver are able to understand English or Mandarin
- Ability to provide informed consent or have a legally authorised representative to provide informed consent;
- Good family support for post-treatment care and rehabilitation;
- Fit for general anaesthesia/deep sedation and surgery (ASA 1-2; excluding the diagnosis of Alzheimer's Disease).
Age in the registry: 50 years to 80 years · Sex: All · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Changi General Hospital Coordinator of this site? Confirm its status | Singapore | Singapore | Recruiting |
Related publications
This page is information, not medical advice. Discuss any trial with your doctor.