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Directional PSA Versus STN DBS for TD-PD

7. Juli 2026 aktualisiert von: LI DIANYOU, Ruijin Hospital

Directional Deep Brain Stimulation of the Posterior Subthalamic Area (PSA) Versus Subthalamic Nucleus (STN) for Tremor-dominant Parkinson's Disease: a Prospective, Randomized, Double-blinded, Cross-over Trial

The aim of this study is to compare the effectiveness of the deep brain stimulation in the posterior subthalamic area (PSA) versus the subthalamic nucleus (STN) using directional lead for the treatment of tremor-dominant Parkinson's disease (PD) in a randomized, double-blinded, cross-over manner.

Studienübersicht

Status

Rekrutierung

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

This single-center trial utilizes directional deep brain stimulation (DBS) current-steering technology to compare the clinical efficacy and tolerability of the posterior subthalamic area (PSA) versus the subthalamic nucleus (STN) for the treatment of tremor-dominant Parkinson's disease (TD-PD) within the same subject. The study is optimized into a two-phase framework to maximize patient safety and protocol compliance:

Phase 1: Two-month post-implantation, acute mapping is conducted to define the therapeutic window for PSA and STN configurations in a blinded randomized order. If a configuration induces immediate, unmanageable adverse events before reaching efficacy, it is classified as "intolerant" and excluded from that participant's subsequent chronic phase.

Phase 2 (Chronic Crossover): Participants with tolerated configurations are entered into a chronic randomized phase with a blinded sequence of 2-month PSA or STN chronic stimulation. Following the core two-arm crossover, all eligible patients transition into an open-label, exploratory sequential add-on phase of 2-month with combined PSA+STN stimulation to evaluate potential synergistic benefits.

All participants will then be followed-up up to 12 months after surgery.

Studientyp

Interventionell

Einschreibung (Geschätzt)

32

Phase

  • Unzutreffend

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

Studienorte

  • China
      • Shanghai, China, 200025
        • Rekrutierung
        • Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine
        • Kontakt:

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

  • Erwachsene
  • Älterer Erwachsener

Akzeptiert gesunde Freiwillige

Nein

Beschreibung

Inclusion Criteria:

  • diagnosis of idiopathic Parkinson's disease
  • tremor-dominant subtype in the off-medication condition
  • modified Hoehn-Yahr scale of 2 to 4 in the off-medication condition
  • receiving regular anti-parkinsonian drugs for more than 6 weeks
  • good compliance and written informed consent provided

Exclusion Criteria:

  • Atypical parkinsonism
  • History of stroke, encephalitis, neuroleptic uses, MRI scan with evidence of significant brain atrophy, lacunar infracts, or other conditions that might interfere with the intracranial surgery
  • Presence of cognitive, or psychiatric or other co-morbidities (e.g., dementia, epilepsy, cranial traumatism, brain tumor, schizophrenia, severe depression or bipolar disorder, personality disorder, etc.) that might interfere with the patient's ability to complete the evaluations or to provide informed consent
  • Presence of anatomical abnormalities in the target region
  • Clinically significant medical history that would increase pre-/post-operative complications
  • Other conditions considered by the investigators that might interfere with the surgery procedure, the follow-ups, and the interpretation of the data

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: Zufällig
  • Interventionsmodell: Crossover-Aufgabe
  • Maskierung: Doppelt

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: directional PSA-STN
Participants randomized in this arm will receive the bilateral directional PSA stimulation and then will be crossovered to the bilateral directional STN stimulation in the acute mapping phase (phase I). After that, participants will receive the bilateral directional PSA stimulation in the first two months in the chronic randomized phase (phase II) and then will be crossovered to the bilateral directional STN stimulation for another two months.
Gerät: directional Deep brain stimulation
active directional DBS with optimal stimulating parameters
Experimental: directional STN-PSA
Participants randomized in this arm will receive the bilateral directional STN stimulation and then will be crossovered to the bilateral directional PSA stimulation in the acute mapping phase (phase I). After that, participants will receive the bilateral directional STN stimulation in the first two months in the chronic randomized phase (phase II) and then will be crossovered to the bilateral directional PSA stimulation for another two months.
Gerät: directional Deep brain stimulation
active directional DBS with optimal stimulating parameters

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Change from Baseline in Movement Disorder Society-sponsord Unified Parkinson's Disease Rating Scale Part III tremor subscore Between PSA and STN Stimulation in the chronic randomized phase
Zeitfenster: Baseline (pre-operation, OFF-medication) and the end of each 2-month stimulation period (Month 4 and Month 6)
The tremor subscore is derived from the sum of items 3.15 to 3.18 of the MDS-UPDRS-III. This measure directly compares the within-subject efficacy of directional PSA stimulation versus directional STN stimulation in the chronic cross-over phase. Lower scores indicate greater tremor suppression.
Baseline (pre-operation, OFF-medication) and the end of each 2-month stimulation period (Month 4 and Month 6)

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Zeitfenster
Change from Baseline in Fahn-Tolosa-Marin Clinical Rating Scale Between PSA and STN Stimulation in the chronic randomized phase
Zeitfenster: Baseline (pre-operation, OFF-medication) and the end of each 2-month stimulation period (Month 4 and Month 6)
Baseline (pre-operation, OFF-medication) and the end of each 2-month stimulation period (Month 4 and Month 6)
Change from Baseline in Movement Disorder Society-sponsord Unified Parkinson's Disease Rating Scale Part III total score Between PSA and STN Stimulation in the chronic randomized phase
Zeitfenster: Baseline (pre-operation, OFF-medication) and the end of each 2-month stimulation period (Month 4 and Month 6)
Baseline (pre-operation, OFF-medication) and the end of each 2-month stimulation period (Month 4 and Month 6)
Change from Baseline in Berg Balance Scale score Between PSA and STN Stimulation in the chronic randomized phase
Zeitfenster: Baseline (pre-operation, OFF-medication) and the end of each 2-month stimulation period (Month 4 and Month 6)
Baseline (pre-operation, OFF-medication) and the end of each 2-month stimulation period (Month 4 and Month 6)
Change from Baseline in 39-item Parkinsons disease questionnaire Between PSA and STN Stimulation in the chronic randomized phase
Zeitfenster: Baseline (pre-operation) and the end of each 2-month stimulation period (Month 4 and Month 6)
Baseline (pre-operation) and the end of each 2-month stimulation period (Month 4 and Month 6)
Proportion of Participants with Acute Phase Intolerance to Single-Target Stimulation
Zeitfenster: Up to 2 months after sugery
Up to 2 months after sugery
Adverse events
Zeitfenster: Up to 12 months after surgery
Up to 12 months after surgery

Andere Ergebnismessungen

Ergebnis Maßnahme
Zeitfenster
Change from Baseline in Beck Depression Inventory-II Between PSA and STN Stimulation in the chronic randomized phase
Zeitfenster: Baseline (pre-operation, OFF-medication) and the end of each 2-month stimulation period (Month 4 and Month 6)
Baseline (pre-operation, OFF-medication) and the end of each 2-month stimulation period (Month 4 and Month 6)
Change from Baseline in Beck Anxiety Inventory Between PSA and STN Stimulation in the chronic randomized phase
Zeitfenster: Baseline (pre-operation, OFF-medication) and the end of each 2-month stimulation period (Month 4 and Month 6)
Baseline (pre-operation, OFF-medication) and the end of each 2-month stimulation period (Month 4 and Month 6)
Change from Baseline in nonmotor symptoms scale for Parkinson's disease (NMSS) Between PSA and STN Stimulation in the chronic randomized phase
Zeitfenster: Baseline (pre-operation, OFF-medication) and the end of each 2-month stimulation period (Month 4 and Month 6)
Baseline (pre-operation, OFF-medication) and the end of each 2-month stimulation period (Month 4 and Month 6)
Change from Baseline in Mini-Mental State Examination Between PSA and STN Stimulation in the chronic randomized phase
Zeitfenster: Baseline (pre-operation, OFF-medication) and the end of each 2-month stimulation period (Month 4 and Month 6)
Baseline (pre-operation, OFF-medication) and the end of each 2-month stimulation period (Month 4 and Month 6)
Change from Baseline in levodopa equivalent daily dose Between PSA and STN Stimulation in the chronic randomized phase
Zeitfenster: Baseline (pre-operation, OFF-medication) and the end of each 2-month stimulation period (Month 4 and Month 6)
Baseline (pre-operation, OFF-medication) and the end of each 2-month stimulation period (Month 4 and Month 6)
Change from Baseline in total electrical energy delivered Between PSA and STN Stimulation in the chronic randomized phase
Zeitfenster: Baseline (pre-operation, OFF-medication) and the end of each 2-month stimulation period (Month 4 and Month 6)
Baseline (pre-operation, OFF-medication) and the end of each 2-month stimulation period (Month 4 and Month 6)

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Ruijin Hospital

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Tatsächlich)

1. Juli 2026

Primärer Abschluss (Geschätzt)

1. Dezember 2028

Studienabschluss (Geschätzt)

1. Juni 2029

Studienanmeldedaten

Zuerst eingereicht

7. Juli 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

7. Juli 2026

Zuerst gepostet (Tatsächlich)

14. Juli 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

14. Juli 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

7. Juli 2026

Zuletzt verifiziert

1. Juli 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Schlüsselwörter

Zusätzliche relevante MeSH-Bedingungen

Andere Studien-ID-Nummern

  • dPSA-STNforTD-PD

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Ja

Produkt, das in den USA hergestellt und aus den USA exportiert wird

Ja

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .

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