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EEG Prediction and Clinical Efficacy of tDCS in Fibromyalgia. (FM-TDCS-PREDIC)

13. července 2026 aktualizováno: Ionclinics & Deionic SL

Clinical Efficacy of tDCS in Fibromyalgia: A Controlled Clinical Trial and Analysis of Electrophysiological Biomarker Predictors.

The purpose of this randomized controlled trial is to investigate the non-inferiority, and possible superiority, of a high-dose home-based tDCS protocol compared with a conventional home-based protocol, and to assess its cost-effectiveness, in patients with fibromyalgia.

As complementary goals, we aim to assess the predictive value of baseline EEG for clinical response to high-dose home-based tDCS treatment; and to describe the effectiveness of a high-dose home-based protocol applied to the motor cortex (M1) versus the dorsolateral prefrontal cortex (DLFPC) in patients with fibromyalgia.

Přehled studie

Postavení

Nábor

Podmínky

Intervence / Léčba

Typ studie

Intervenční

Zápis (Odhadovaný)

250

Fáze

  • Nelze použít

Kontakty a umístění

Tato část poskytuje kontaktní údaje pro ty, kteří studii provádějí, a informace o tom, kde se tato studie provádí.

Studijní kontakt

Studijní záloha kontaktů

Studijní místa

      • Valencia, Španělsko
        • Nábor
        • Hospital Clínico Universitario de Valencia
        • Kontakt:

Kritéria účasti

Výzkumníci hledají lidi, kteří odpovídají určitému popisu, kterému se říká kritéria způsobilosti. Některé příklady těchto kritérií jsou celkový zdravotní stav osoby nebo předchozí léčba.

Kritéria způsobilosti

Věk způsobilý ke studiu

  • Dospělý
  • Starší dospělý

Přijímá zdravé dobrovolníky

Ne

Popis

Inclusion Criteria:

  • Patients who meet the diagnostic criteria described by the American College of Rheumatology (Wolfe et al., 2016):
  • Widespread Pain Index (WPI) ≥7 and Symptom Severity Scale (SSS) score ≥5 or a WPI score of 4-6 and SSS ≥9
  • Presence of widespread pain, defined as pain in at least 4 of 5 regions. Jaw, chest, and abdominal pain are not included in the definition of widespread pain.
  • Symptoms have been generally present for at least 3 months.
  • The diagnosis of fibromyalgia (FM) is valid regardless of other diagnoses. The diagnosis of FM does not exclude the presence of other clinically significant diseases.
  • Patients with a stable prescription (or lack thereof) for antidepressant/pharmacological medication and who agree to continue it throughout the study.
  • Demonstrate the ability to properly administer home-based tDCS independently or with the assistance of a caregiver.
  • Have access to an electronic device with a camera (mobile phone or computer) to allow for monitoring of the intervention and communication with the participant.
  • Have the capacity and willingness to commit to the study team for the completion of all phases of the study.
  • Volunteer to participate and sign the specific informed consent form for this study.

Exclusion Criteria:

  • Presenting with immune system disorders or comorbidities that explain the main symptoms of fibromyalgia: rheumatoid arthritis, lupus, autoimmune, neurological, and oncological disorders.
  • Presenting with any uncompensated clinical condition such as ischemic heart disease, kidney disease, or liver disease.
  • Presenting with dermatological conditions, such as allergic skin reactions at the electrode sites, psoriasis, etc.
  • Any exclusion criteria established by clinical guidelines on non-invasive brain stimulation (Woods et al., 2016):
  • Metallic implants or head injuries, any electronic device such as cochlear implants or cardiac pacemakers.
  • Brain stimulation within the last 6 months.
  • A clinical or family history of epilepsy.
  • Having any structural lesion (for example, any structural neurological condition or more subcortical lesions than would be expected for their age, or having suffered a stroke affecting the stimulated area or connected areas) or any other clinically significant abnormality that could affect safety, participation in the study, or confound the interpretation of the study results, as determined by the investigator.
  • History of drug or alcohol abuse during the study or in the 3 months prior (except for nicotine).
  • Changes in drug treatment in the month prior to starting the trial.
  • Awaiting trial or litigation during the trial.
  • Pregnancy

Studijní plán

Tato část poskytuje podrobnosti o studijním plánu, včetně toho, jak je studie navržena a co studie měří.

Jak je studie koncipována?

Detaily designu

  • Primární účel: Léčba
  • Přidělení: Randomizované
  • Intervenční model: Paralelní přiřazení
  • Maskování: Dvojnásobek

Zbraně a zásahy

Skupina účastníků / Arm
Intervence / Léčba
Experimentální: High-dose home-tDCS M1
tDCS administered at home using a high-dose protocol targeting the primary motor cortex.

Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique in which a weak direct current (2 mA) is applied to the scalp via electrodes.

The anode will be applied to C3 (primary motor cortex) and the cathode to Fp2 (contralateral anterior frontal region). The application of tDCS will be carried out at home in this group. Each session will consist of 20 minutes of stimulation.

Dose: 3 weeks, daily. (1) 1st week - 3 times per day; (2) 2nd Week - 2 times per day; (3) 3rd week - 1 time per day (total of 42 sessions).

Aktivní komparátor: Conventional home-tDCS
tDCS administered at home using a conventional stimulation protocol targeting the primary motor cortex.

Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique in which a weak direct current (2 mA) is applied to the scalp via electrodes.

The anode will be applied to C3 (primary motor cortex) and the cathode to Fp2 (contralateral anterior frontal region). The application of tDCS will be carried out at home in this group. Each session will consist of 20 minutes of stimulation.

Dose: 4 weeks, from Monday to Friday. 1 time per day (total of 20 sessions).

Experimentální: High-Dose home-tDCS DLPFC
tDCS administered at home using a high-dose stimulation protocol targeting the dorsolateral prefrontal cortex.

Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique in which a weak direct current (2 mA) is applied to the scalp via electrodes.

The anode will be applied to F3 (left dorsolateral prefrontal cortex) and the cathode to F8 (right ventrolateral prefrontal cortex). The application of tDCS will be carried out at home in this group. Each session will consist of 20 minutes of stimulation.

Dose: 3 weeks, daily. (1) 1st week - 3 times per day; (2) 2nd Week - 2 times per day; (3) 3rd week - 1 time per day (total of 42 sessions).

Co je měření studie?

Primární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Fibromyalgia Impact Questionnaire
Časové okno: Baseline and end of treatment (week 3 for experimental; week 4 for active comparator).
Changes from baseline to the end of the treatment in the revised version of Fibromyalgia Impact Questionnaire (FIQ-R).
Baseline and end of treatment (week 3 for experimental; week 4 for active comparator).

Sekundární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
WPI
Časové okno: Baseline; end of treatment (3 week experimental; 4 week active comparator)
Change from baseline to end of treatment in Widespread Pain Inventory (WPI).
Baseline; end of treatment (3 week experimental; 4 week active comparator)
SSS
Časové okno: Baseline; end of treatment (3 week experimental; 4 week active comparator)
Change from baseline to end of treatment in Symptom Severity Scale (SSS).
Baseline; end of treatment (3 week experimental; 4 week active comparator)
HADS
Časové okno: Baseline; end of treatment (3 week experimental; 4 week active comparator).
Change from baseline to end of treatment in Hospital Anxiety and Depression Scale (HADS).
Baseline; end of treatment (3 week experimental; 4 week active comparator).
PSQI
Časové okno: Baseline; end of treatment (3 week experimental; 4 week active comparator).
Change from baseline to end of treatment in Pittsburgh Sleep Quality Index (PSQI).
Baseline; end of treatment (3 week experimental; 4 week active comparator).
EQ-5D
Časové okno: Baseline; end of treatment (3 week experimental; 4 week active comparator).
Change from baseline to end of treatment in EuroQoL-5D (EQ-5D).
Baseline; end of treatment (3 week experimental; 4 week active comparator).
PGI-C
Časové okno: End of treatment (3 week experimental; 4 week active comparator).
Change at the end of treatment in Patient Global Impression of Change (PGI-C).
End of treatment (3 week experimental; 4 week active comparator).
BDI-II
Časové okno: Baseline and end of treatment (week 3 for experimental; week 4 for active comparator).
Changes from baseline to end of treatment in Beck Depression Inventory-II.
Baseline and end of treatment (week 3 for experimental; week 4 for active comparator).
Resting state EEG
Časové okno: Baseline
32-channel active-electrode EEG (impedances <5 kΩ) recordings in open and close eye conditions. The spectral density and spectral power of delta, theta, alpha, beta, and gamma will be analyzed, as well as the topographic distribution.
Baseline

Další výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Očekávání pacienta
Časové okno: Výchozí hodnota
Likertova škála od 1 do 5 (kde 1 znamená žádné očekávání a 5 znamená nejvyšší možné očekávání) pro studium vlivu očekávání na účinek léčby.
Výchozí hodnota
Responders to tDCS
Časové okno: Through study completion, an average of 2 years.

A subject is considered a responder if:

- Improvement of 50% or more in FIQ-R from baseline to immediate post-treatment.

Through study completion, an average of 2 years.
Adverse Effect
Časové okno: End-of-day application (Experimental: 7 days per week through 3 weeks; Active Comparator: 5 days per week, through 4 weeks).
A daily questionnaire about adverse effects will be completed at the end of the last intervention of the day.
End-of-day application (Experimental: 7 days per week through 3 weeks; Active Comparator: 5 days per week, through 4 weeks).
Success of blinding
Časové okno: Through study completion, an average of 2 years
A method 3 x 3 will be used to evaluate the success of the study's evaluator and statistician.
Through study completion, an average of 2 years
Incremental Cost Effectiveness Ratio
Časové okno: Through study completion, an average of 2 years.
Incremental Cost Effectiveness Ratio (ICER) will be derived from clinical effectiveness, utility and costs.
Through study completion, an average of 2 years.
Costs
Časové okno: Through study completion, an average of 2 years.
Direct and indirect medical and non-medical costs will be collected for the cost-effectiveness analysis.
Through study completion, an average of 2 years.
Utility
Časové okno: Through study completion, an average of 2 years.
Quality-adjusted life years (QALYs) will be calculated using the EQ-5D questionnaire for the cost-effectiveness analysis.
Through study completion, an average of 2 years.
NRS
Časové okno: Each day during the treatment (21 days for experimental; 28 days for active comparator).
Daily report of the numeric rating scale for symptom intensity, ranging from 0 to 10 (with 0 meaning 'none' and 10 meaning 'the worst imaginable').
Each day during the treatment (21 days for experimental; 28 days for active comparator).

Spolupracovníci a vyšetřovatelé

Zde najdete lidi a organizace zapojené do této studie.

Sponzor

Spolupracovníci

Vyšetřovatelé

  • Ředitel studie: Ane Miren Gutiérrez Muto, PhD, Ionclinics & Deionics S.L.
  • Studijní židle: Mar Hernández Secorún, PhD, Neuroscience in Physiotherapy independent research group; Ionclinics & Deionics S.L.
  • Studijní židle: Gustavo Sarriá Córdoba, MSc, Neuroscience in Physiotherapy independent research group; Ionclinics & Deionics S.L.

Termíny studijních záznamů

Tato data sledují průběh záznamů studie a předkládání souhrnných výsledků na ClinicalTrials.gov. Záznamy ze studií a hlášené výsledky jsou před zveřejněním na veřejné webové stránce přezkoumány Národní lékařskou knihovnou (NLM), aby se ujistily, že splňují specifické standardy kontroly kvality.

Hlavní termíny studia

Začátek studia (Aktuální)

8. července 2026

Primární dokončení (Odhadovaný)

31. prosince 2027

Dokončení studie (Odhadovaný)

30. června 2028

Termíny zápisu do studia

První předloženo

30. dubna 2026

První předloženo, které splnilo kritéria kontroly kvality

7. května 2026

První zveřejněno (Aktuální)

13. května 2026

Aktualizace studijních záznamů

Poslední zveřejněná aktualizace (Aktuální)

15. července 2026

Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality

13. července 2026

Naposledy ověřeno

1. července 2026

Více informací

Termíny související s touto studií

Další identifikační čísla studie

  • ION002_EEG_TDCS_FM

Plán pro data jednotlivých účastníků (IPD)

Plánujete sdílet data jednotlivých účastníků (IPD)?

NE

Popis plánu IPD

In accordance with the recommendations of the International Committee of Medical Journal Editors, the de-identified individual participant data (IPD) that underlie the results reported in this study will be shared. The data will become accessible one year after the publication of the primary results and will remain available for five years. Access will be provided to researchers who inquire and agree to a data-use agreement through Ionclinics (investigacion@ionclinics.com/ensayos@ionclinics.com). The data will be de-identified and shared in accordance with applicable regulations and the informed consent provided by the participants.

Informace o lécích a zařízeních, studijní dokumenty

Studuje lékový produkt regulovaný americkým FDA

Ne

Studuje produkt zařízení regulovaný americkým úřadem FDA

Ne

Tyto informace byly beze změn načteny přímo z webu clinicaltrials.gov. Máte-li jakékoli požadavky na změnu, odstranění nebo aktualizaci podrobností studie, kontaktujte prosím register@clinicaltrials.gov. Jakmile bude změna implementována na clinicaltrials.gov, bude automaticky aktualizována i na našem webu .