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SEEG-Guided DBS for Schizophrenia

22 czerwca 2026 zaktualizowane przez: Bomin Sun, Ruijin Hospital

Deep Brain Stimulation for Treatment-Refractory Schizophrenia: Individualized Target Selection and Efficacy

This is a prospective, randomized, interventional study designed to evaluate the efficacy and safety of SEEG-guided deep brain stimulation (DBS) for symptom improvement in patients with treatment-resistant schizophrenia. Using stereo-electroencephalography (SEEG) to record brain activity, we will identify specific abnormal electrophysiological targets and signal features associated with clinical symptoms, followed by a 12-month open-label stimulation period. The study is conducted in three stages: Stage 1 consists of SEEG brain mapping, screening of intervention targets, and optimization of stimulation parameters; Stage 2 consists of DBS implantation surgery and further optimization of stimulation parameters; Stage 3 is a randomized crossover treatment phase, followed by an open-label treatment period.

Przegląd badań

Status

Rekrutacyjny

Warunki

Interwencja / Leczenie

Szczegółowy opis

This clinical trial aims to systematically evaluate the efficacy and safety of SEEG-guided target screening combined with individualized deep brain stimulation (DBS) for treatment-refractory schizophrenia.

The study first employs Stereoelectroencephalography (SEEG) electrodes as the core tool to establish a personalized, minimally invasive neuromodulation surgical framework. After SEEG electrode implantation, researchers will collect and analyze high-spatiotemporal-resolution electrophysiological data during both resting-state and task-state conditions, as well as identify characteristic electrophysiological biomarkers that correlate with clinical symptoms.

Secondly, electrical stimulation is delivered through the SEEG contacts to functionally verify candidate targets in different brain regions. By stimulating specific targets and observing immediate symptomatic or physiological responses, we validate the effects on neural circuits and confirm their functional relevance prior to any permanent intervention. For targets that show preliminary efficacy, we further apply externalized chronic stimulation to continuously monitor symptom improvement and potential adverse effects.

After determine the optimal targets and the intervention is confirmed to be both effective and safe, we implant a permanent brain pacemaker (DBS device). During the efficacy follow-up phase, we employ a randomized crossover design, which is then followed by an open-label period. These two stages enable thorough assessment of clinical efficacy. Meanwhile, we also collect multidimensional data (clinical symptoms, cognition, and neuroimaging) to explore the circuit mechanisms of stimulation.

Typ studiów

Interwencyjne

Zapisy (Szacowany)

46

Faza

  • Nie dotyczy

Kontakty i lokalizacje

Ta sekcja zawiera dane kontaktowe osób prowadzących badanie oraz informacje o tym, gdzie badanie jest przeprowadzane.

Kontakt w sprawie studiów

Lokalizacje studiów

  • Chiny
    • Shanghai Municipality
      • Shanghai, Shanghai Municipality, Chiny, 200025
        • Rekrutacyjny
        • Ruijin Hospital, Shanghai Jiaotong University School of Medicine
        • Kontakt:

Kryteria uczestnictwa

Badacze szukają osób, które pasują do określonego opisu, zwanego kryteriami kwalifikacyjnymi. Niektóre przykłady tych kryteriów to ogólny stan zdrowia danej osoby lub wcześniejsze leczenie.

Kryteria kwalifikacji

Wiek uprawniający do nauki

  • Dorosły

Akceptuje zdrowych ochotników

Nie

Opis

Inclusion Criteria:

  • Meets the International Classification of Diseases, 10th Revision (ICD-10) diagnostic criteria for schizophrenia.
  • Male or female, aged 18 to 55 years, with stable vital signs.
  • Currently presents with prominent psychotic symptoms, assessed as moderate or severe by the Positive and Negative Syndrome Scale (PANSS) or other equivalent scales.
  • Exhibits impaired social functioning, assessed as moderate or severe impairment by the Social and Occupational Functioning Assessment Scale (SOFAS) or other equivalent scales.
  • Has a history of sequential treatment with at least two antipsychotic medications of different chemical structures known for strong efficacy against positive symptoms. Treatment must have been at an adequate dose and for an adequate duration (continuous treatment at a therapeutic dose for more than 6 weeks per medication), with good treatment adherence.
  • Has been on a stable antipsychotic medication regimen for at least one month prior to enrollment.
  • Capable and willing to provide written informed consent.
  • Demonstrates good compliance and is able to cooperate with all follow-up procedures.

Exclusion Criteria:

  • Diagnosed with any psychiatric disorder other than schizophrenia.
  • Presence of a severe personality disorder.
  • History of severe neurological diseases, such as seizures or hemorrhagic stroke.
  • Presence of structural brain abnormalities.
  • Previous history of stereotactic neurosurgery.
  • Contraindications to general anesthesia or stereotactic neurosurgery.
  • Any current or anticipated condition-including medical, psychological, social, familial support, or geographical factors-that might compromise patient safety or interfere with successful participation in the study.

Plan studiów

Ta sekcja zawiera szczegółowe informacje na temat planu badania, w tym sposób zaprojektowania badania i jego pomiary.

Jak projektuje się badanie?

Szczegóły projektu

  • Główny cel: Leczenie
  • Przydział: Randomizowane
  • Model interwencyjny: Przydział równoległy
  • Maskowanie: Brak (otwarta etykieta)

Broń i interwencje

Grupa uczestników / Arm
Interwencja / Leczenie
Aktywny komparator: Stim ON-OFF

Participants randomized to the Stim ON-OFF arm will first undergo bilateral stereoelectroencephalography (SEEG) electrode implantation targeting brain regions associated with schizophrenia symptoms, followed by stimulation response assessments.

Secondly, deep brain stimulation will be performed based on the electrophysiological recordings and stimulation assessment results.

Thirdly, participants will receive active stimulation during the randomization phase for up to 12 weeks. The participants will then have their device turned off and receive sham stimulation during the crossover phase for up to 12 weeks.
Procedura: SEEG implantation
Phase 1 involves the stereotactic implantation of Stereoelectroencephalography (SEEG) electrodes. Following implantation, comprehensive electrophysiological monitoring is conducted, including resting-state and task-state recordings, as well as acute electrical stimulation mapping. This process aims to identify the specific pathological neural circuits and electrophysiological biomarkers associated with the patient's individual psychotic symptoms.
Urządzenie: Deep brain stimulation
Phase 2 involves individualized deep brain stimulation (DBS). Instead of relying solely on standardized anatomical landmarks, the DBS targets and parameters are precisely customized based on the individualized data acquired during the SEEG mapping phase.
Komparator placebo: Stim OFF-ON

Participants randomized to the Stim OFF-ON arm will first undergo bilateral stereoelectroencephalography (SEEG) electrode implantation targeting brain regions associated with schizophrenia symptoms, followed by stimulation response assessments.

Secondly, deep brain stimulation will be performed based on the electrophysiological recordings and stimulation assessment results.

Thirdly, participants will have their device turned off and receive sham stimulation during the randomization phase for up to 12 weeks. The participants will then receive active stimulation during the crossover phase for up to 12 weeks.
Procedura: SEEG implantation
Phase 1 involves the stereotactic implantation of Stereoelectroencephalography (SEEG) electrodes. Following implantation, comprehensive electrophysiological monitoring is conducted, including resting-state and task-state recordings, as well as acute electrical stimulation mapping. This process aims to identify the specific pathological neural circuits and electrophysiological biomarkers associated with the patient's individual psychotic symptoms.
Urządzenie: Deep brain stimulation
Phase 2 involves individualized deep brain stimulation (DBS). Instead of relying solely on standardized anatomical landmarks, the DBS targets and parameters are precisely customized based on the individualized data acquired during the SEEG mapping phase.

Co mierzy badanie?

Podstawowe miary wyniku

Miara wyniku
Opis środka
Ramy czasowe
Reduction Rate of PANSS Positive Subscale or SAPS
Ramy czasowe: Baseline (pre-operation), 4 weeks, 8 weeks, 12 weeks, 16 weeks, 20 weeks and 24 weeks post-operation.
Positive symptoms are assessed using either the Positive and Negative Syndrome Scale (PANSS) positive subscale (P1-P7) or the Scale for the Assessment of Positive Symptoms (SAPS). The PANSS evaluates positive, negative, and general psychopathology symptoms (total score range: 30-210). The SAPS evaluates hallucinations, delusions, bizarre behavior, and positive formal thought disorder. For both scales, higher scores indicate greater symptom severity.
Baseline (pre-operation), 4 weeks, 8 weeks, 12 weeks, 16 weeks, 20 weeks and 24 weeks post-operation.

Miary wyników drugorzędnych

Miara wyniku
Opis środka
Ramy czasowe
Reduction Rate of Auditory Hallucinations (Assessed by PSYRATS-AH)
Ramy czasowe: Baseline (pre-operation), 4 weeks, 8 weeks, 12 weeks, 16 weeks, 20 weeks and 24 weeks post-operation.
The severity of auditory hallucinations is assessed using the Psychotic Symptom Rating Scales - Auditory Hallucinations subscale (PSYRATS-AH). Higher scores indicate greater symptom severity.
Baseline (pre-operation), 4 weeks, 8 weeks, 12 weeks, 16 weeks, 20 weeks and 24 weeks post-operation.
Reduction Rate of Delusions (Assessed by PSYRATS-D)
Ramy czasowe: Baseline (pre-operation), 4 weeks, 8 weeks, 12 weeks, 16 weeks, 20 weeks and 24 weeks post-operation.
The severity of delusions is assessed using the Psychotic Symptom Rating Scales - Delusions subscale (PSYRATS-D). Higher scores indicate greater symptom severity.
Baseline (pre-operation), 4 weeks, 8 weeks, 12 weeks, 16 weeks, 20 weeks and 24 weeks post-operation.
Reduction Rate of Depressive Symptoms (Assessed by HAMD)
Ramy czasowe: Baseline (pre-operation), 4 weeks, 8 weeks, 12 weeks, 16 weeks, 20 weeks and 24 weeks post-operation.
The severity of depression is assessed using the Hamilton Depression Rating Scale (HAMD). Higher scores indicate greater severity of depressive symptoms. The reduction rate will be calculated based on the change in the HAMD total score from baseline to each follow-up time point.
Baseline (pre-operation), 4 weeks, 8 weeks, 12 weeks, 16 weeks, 20 weeks and 24 weeks post-operation.
Reduction Rate of Anxiety Symptoms (Assessed by HAMA)
Ramy czasowe: Baseline (pre-operation), 4 weeks, 8 weeks, 12 weeks, 16 weeks, 20 weeks and 24 weeks post-operation.
The severity of anxiety is assessed using the Hamilton Anxiety Rating Scale (HAMA). Higher scores indicate greater severity of anxiety symptoms. The reduction rate will be calculated based on the change in the HAMA total score from baseline to each follow-up time point.
Baseline (pre-operation), 4 weeks, 8 weeks, 12 weeks, 16 weeks, 20 weeks and 24 weeks post-operation.
Improvement Rate of Cognitive Function (Assessed by MoCA)
Ramy czasowe: Baseline (pre-operation), 4 weeks, 8 weeks, 12 weeks, 16 weeks, 20 weeks and 24 weeks post-operation.
General cognitive performance is assessed using the Montreal Cognitive Assessment (MoCA). The MoCA total score ranges from 0 to 30, with higher scores indicating better cognitive function. Unlike symptom rating scales, the outcome here focuses on the positive percentage change (improvement rate) or absolute point increase in the MoCA total score from baseline to each follow-up time point.
Baseline (pre-operation), 4 weeks, 8 weeks, 12 weeks, 16 weeks, 20 weeks and 24 weeks post-operation.

Współpracownicy i badacze

Tutaj znajdziesz osoby i organizacje zaangażowane w to badanie.

Sponsor

Ruijin Hospital

Publikacje i pomocne linki

Osoba odpowiedzialna za wprowadzenie informacji o badaniu dobrowolnie udostępnia te publikacje. Mogą one dotyczyć wszystkiego, co jest związane z badaniem.

Publikacje ogólne

Daty zapisu na studia

Daty te śledzą postęp w przesyłaniu rekordów badań i podsumowań wyników do ClinicalTrials.gov. Zapisy badań i zgłoszone wyniki są przeglądane przez National Library of Medicine (NLM), aby upewnić się, że spełniają określone standardy kontroli jakości, zanim zostaną opublikowane na publicznej stronie internetowej.

Główne daty studiów

Rozpoczęcie studiów (Rzeczywisty)

17 sierpnia 2025

Zakończenie podstawowe (Szacowany)

31 grudnia 2028

Ukończenie studiów (Szacowany)

31 grudnia 2028

Daty rejestracji na studia

Pierwszy przesłany

22 czerwca 2026

Pierwszy przesłany, który spełnia kryteria kontroli jakości

22 czerwca 2026

Pierwszy wysłany (Rzeczywisty)

26 czerwca 2026

Aktualizacje rekordów badań

Ostatnia wysłana aktualizacja (Rzeczywisty)

26 czerwca 2026

Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości

22 czerwca 2026

Ostatnia weryfikacja

1 lipca 2025

Więcej informacji

Terminy związane z tym badaniem

Słowa kluczowe

Dodatkowe istotne warunki MeSH

Inne numery identyfikacyjne badania

  • SEEG-Guided DBS for TRS

Plan dla danych uczestnika indywidualnego (IPD)

Planujesz udostępniać dane poszczególnych uczestników (IPD)?

NIE

Informacje o lekach i urządzeniach, dokumenty badawcze

Bada produkt leczniczy regulowany przez amerykańską FDA

Nie

Bada produkt urządzenia regulowany przez amerykańską FDA

Nie

produkt wyprodukowany i wyeksportowany z USA

Nie

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