- ICH GCP
- Yhdysvaltain kliinisten tutkimusten rekisteri
- Kliininen tutkimus NCT07857759
Cervical Lymphatic Microsurgery in Alzheimer's Disease
Microsurgical Modification of Cervical Lymphatic Pathways in Alzheimer's Disease: A Pilot Study
This pilot study will evaluate whether microsurgical modification of cervical lymphatic drainage may influence blood biomarkers and clinical outcomes in people with mild Alzheimer's disease.
Thirty participants will be randomly assigned in a 1:1 ratio to either a surgical intervention group or a control group. Participants in the intervention group will undergo supermicrosurgical lymphaticovenous anastomosis (LVA) and/or lymph node-to-vein anastomosis (LNVA) in the neck to create an alternative pathway for lymphatic drainage. The procedure may be performed manually or with robotic microsurgical assistance. Participants in the control group will receive clinical observation without surgery during the first 12 months.
The primary objective is to assess the change in plasma phosphorylated tau 217 (p-tau217) from baseline to 12 months. The study will also assess changes in cognitive and functional measures, including the Clinical Dementia Rating Sum of Boxes (CDR-SB), Alzheimer's Disease Cooperative Study-Activities of Daily Living (ADCS-ADL), Montreal Cognitive Assessment (MoCA), and Mini-Mental State Examination (MMSE), as well as the feasibility and safety of the surgical procedure.
Participants will be assessed at baseline and at 3, 6, and 12 months. After completion of the 12-month observation period, participants in the control group may be offered the surgical procedure if they wish to undergo it.
Tutkimuksen yleiskatsaus
Tila
Ehdot
Interventio / Hoito
Opintotyyppi
Ilmoittautuminen (Arvioitu)
Vaihe
- Ei sovellettavissa
Yhteystiedot ja paikat
Opiskeluyhteys
- Nimi: Daniel Maliszewski, MD, PhD
- Puhelinnumero: +48 501784896
- Sähköposti: danielmal2@gmail.com
Tutki yhteystietojen varmuuskopiointi
- Nimi: Kamil Chwojnicki, MD, PhD
- Puhelinnumero: +48 506135515
- Sähköposti: kchwoj@gumed.edu.pl
Opiskelupaikat
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Gdansk, Puola, 80-952
- Rekrytointi
- Uniwersyteckie Centrum Kliniczne w Gdańsku
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Ottaa yhteyttä:
- Kamil Chwojnicki, MD, PhD
- Puhelinnumero: +48 506 135 515
- Sähköposti: kchwoj@gumed.edu.pl
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Päätutkija:
- Kamil Chwojnicki, MD, PhD
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Słupsk, Puola, 76-200
- Rekrytointi
- Wojewódzki Szpital Specjalistyczny im. Janusza Korczaka w Słupsku Sp. z o.o.
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Ottaa yhteyttä:
- Daniel Maliszewski, MD, PhD
- Puhelinnumero: +48 501 784 896
- Sähköposti: danielmal2@gmail.com
-
Päätutkija:
- Daniel Maliszewski, MD, PhD
-
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Osallistumiskriteerit
Kelpoisuusvaatimukset
Opintokelpoiset iät
Hyväksyy terveitä vapaaehtoisia
Sukupuolet, jotka voivat opiskella
Kuvaus
Inclusion Criteria:
- Age 18 years or older
- Clinical diagnosis of mild Alzheimer's disease according to National Institute on Aging-Alzheimer's Association (NIA-AA) criteria.
- Clinical Dementia Rating (CDR) score of 0.5 to 1.0.
- Mini-Mental State Examination (MMSE) score of 20 to 26.
- Confirmation of Alzheimer's disease pathology using plasma biomarkers, with elevated phosphorylated tau 217 (p-tau217).
- Stable pharmacological treatment for Alzheimer's disease for at least 3 months before enrollment.
- Ability to provide informed consent or consent provided by a legally authorized representative.
Exclusion Criteria:
- Moderate or severe Alzheimer's disease.
- Other neurodegenerative disorders or significant psychiatric disorders.
- Previous major neck surgery or radiotherapy to the neck that may affect lymphatic drainage.
- Contraindications to general anesthesia.
- Active infection or coagulation disorders.
Opintosuunnitelma
Miten tutkimus on suunniteltu?
Suunnittelun yksityiskohdat
- Ensisijainen käyttötarkoitus: Perustiede
- Jako: Satunnaistettu
- Inventiomalli: Rinnakkaistehtävä
- Naamiointi: Yksittäinen
Aseet ja interventiot
Osallistujaryhmä / Arm |
Interventio / Hoito |
|---|---|
|
Kokeellinen: Surgical Intervention
Participants assigned to this arm will undergo supermicrosurgical modification of cervical lymphatic drainage using lymphaticovenous anastomosis (LVA) and/or lymph node-to-vein anastomosis (LNVA). The procedure may be performed manually or with robotic microsurgical assistance. |
Supermicrosurgical modification of cervical lymphatic drainage by creation of lymphaticovenous anastomosis (LVA) and/or lymph node-to-vein anastomosis (LNVA). Preoperative lymphatic and venous mapping is performed using ultra-high-frequency ultrasound and indocyanine green fluorescence imaging. The procedure is performed under general anesthesia and may be carried out manually or with robotic supermicrosurgical assistance. The specific anastomotic technique and configuration are selected according to the identified lymphatic and venous anatomy.
Muut nimet:
|
|
Ei väliintuloa: Control
Participants assigned to this arm will undergo clinical observation without surgical intervention during the first 12 months. After completion of the 12-month observation period, participants may elect to undergo the surgical procedure. |
Mitä tutkimuksessa mitataan?
Ensisijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
|
Change in Plasma Phosphorylated Tau 217 (p-tau217) Concentration From Baseline to Month 12
Aikaikkuna: Baseline to Month 12
|
Change in plasma phosphorylated tau 217 (p-tau217) concentration from baseline to the 12-month follow-up. The change over time will be compared between the surgical intervention and control groups. |
Baseline to Month 12
|
Toissijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
|
Change in CDR-SB Score From Baseline to Month 12
Aikaikkuna: Baseline to Month 12
|
The Clinical Dementia Rating Sum of Boxes (CDR-SB) score ranges from 0 to 18, with higher scores indicating greater cognitive and functional impairment and therefore a worse clinical outcome. Change in CDR-SB score from baseline to Month 12 will be compared between the surgical intervention and control groups. A positive change from baseline indicates worsening, whereas a negative change indicates improvement. |
Baseline to Month 12
|
|
Change in ADCS-ADL Score From Baseline to Month 12
Aikaikkuna: Baseline to Month 12
|
The 23-item Alzheimer's Disease Cooperative Study-Activities of Daily Living (ADCS-ADL) total score ranges from 0 to 78, with higher scores indicating better performance in activities of daily living and therefore a better functional outcome. Change in ADCS-ADL total score from baseline to Month 12 will be compared between the surgical intervention and control groups. A positive change from baseline indicates improvement, whereas a negative change indicates worsening. |
Baseline to Month 12
|
|
Change in MoCA Score From Baseline to Month 12
Aikaikkuna: Baseline to Month 12
|
The Montreal Cognitive Assessment (MoCA) total score ranges from 0 to 30, with higher scores indicating better cognitive performance and therefore a better cognitive outcome. Change in MoCA total score from baseline to Month 12 will be compared between the surgical intervention and control groups. A positive change from baseline indicates improvement, whereas a negative change indicates worsening. |
Baseline to Month 12
|
|
Change in MMSE Score From Baseline to Month 12
Aikaikkuna: Baseline to Month 12
|
The Mini-Mental State Examination (MMSE) total score ranges from 0 to 30, with higher scores indicating better cognitive performance and therefore a better cognitive outcome. Change in MMSE total score from baseline to Month 12 will be compared between the surgical intervention and control groups. A positive change from baseline indicates improvement, whereas a negative change indicates worsening. |
Baseline to Month 12
|
|
Procedure-Related Adverse Events and Serious Adverse Events
Aikaikkuna: From surgery through Month 12
|
Occurrence of adverse events and serious adverse events related to the surgical procedure during the study follow-up period. |
From surgery through Month 12
|
|
Postoperative Complications
Aikaikkuna: From surgery through Month 12
|
Occurrence of postoperative complications following cervical lymphatic microsurgery, including local surgical complications assessed during follow-up. |
From surgery through Month 12
|
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Rehospitalization
Aikaikkuna: Up to Month 12
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Occurrence of rehospitalization during the 12-month study follow-up period. |
Up to Month 12
|
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All-Cause Mortality
Aikaikkuna: Up to Month 12
|
Occurrence of death from any cause during the 12-month study follow-up period. |
Up to Month 12
|
Yhteistyökumppanit ja tutkijat
Sponsori
Opintojen ennätyspäivät
Opi tärkeimmät päivämäärät
Opiskelun aloitus (Arvioitu)
Ensisijainen valmistuminen (Arvioitu)
Opintojen valmistuminen (Arvioitu)
Opintoihin ilmoittautumispäivät
Ensimmäinen lähetetty
Ensimmäinen toimitettu, joka täytti QC-kriteerit
Ensimmäinen Lähetetty (Todellinen)
Tutkimustietojen päivitykset
Viimeisin päivitys julkaistu (Todellinen)
Viimeisin lähetetty päivitys, joka täytti QC-kriteerit
Viimeksi vahvistettu
Lisää tietoa
Tähän tutkimukseen liittyvät termit
Avainsanat
Muita asiaankuuluvia MeSH-ehtoja
Muut tutkimustunnusnumerot
- AD-LVA-LNVA-2026-01
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