ClinicalTrials.gg
TerminatedNCT03422757Updated Nov 19, 2020

Safety and Efficacy of Adaptive DBS Vs Conventional DBS in Patients With Parkinson's Disease

An interventional study of adaptive Deep Brain Stimulation and conventional Deep Brain Stimulation in Parkinson Disease, sponsored by Newronika. Terminated at 4 sites in Italy. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2020-11-19.

Sponsored by Newronika · Not applicable, Interventional, and Treatment

Why this study was terminated
Company strategic decision

From the registry’s dates

  • Registered 6 months after the study started (first participant enrolled Jun 2017, registered Dec 2017).

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Phase
Not applicable
Study type
Interventional
Enrollment
6
Allocation
Randomized
Ages
18 Years to 80 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 347 studies in Parkinson Disease with a site in Italy — 90 open to participants now, 108 under way, 4 of them phase 3. Parkinson Disease · Italy.

Enrollment
242nd of 244
6 · median 82
Started
2017
with 19 others
No phase
146 of 347
43 open now
Registered
123rd of 347
by date

Among the 347 studies in Parkinson Disease with a site in Italy, this one is the 242nd largest by enrollment of the 244 interventional ones that give a count, is one of 20 that started in 2017, is one of 146 with no phase, and was the 123rd registered.

Parkinson Disease

4,576 studies on the registry are indexed under Parkinson Disease; 1,087 are open to participants now.

Browse Parkinson Disease studies →

Open to participants now

90 of the 347 studies in Parkinson Disease with a site in Italy are open now. Recruiting first, the newest first:

85 more — sign in →

All 90 open studies →

A study can be open while its sites in Italy have not opened yet or have stopped. Only those recruiting at a site in Italy →

Who these studies take

Of the 749 Parkinson Disease studies recruiting now, 311 (42%) set no upper age limit and 127 (17%) stop at 75 or younger; 64 take children under 18; 189 take healthy volunteers.

This study: 18 Years to 80 Years · all sexes · no healthy volunteers.

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02

Study summary

This is an exploratory study to preliminary assess safety and efficacy of an adaptive Deep Brain Stimulation (DBS) closed-loop method in patients with PD.

The study has been designed as a double blind randomized crossover trial that uses conventional DBS as a concurrent control in PD patients in need of Implantable Pulse Generator (IPG) replacement.

Read the detailed description

PD patients in need of IPG replacement will be screened to identify the ones eligible for enrollment.

Randomized patients will undergo 2 days of experimental sessions (i.e. one per each type of stimulation mode, cDBS and aDBS), in a well-controlled environment (i.e. during hospitalization). During each experimental session experienced neurologists will collect information on safety and efficacy endpoints.

03

Conditions studied

  • Parkinson Disease

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04

Who can participate

Ages eligible
18 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Diagnosis of idiopathic PD;
  • DBS implant since at least 3 years and in need of battery replacement, defined by battery level \<25%;
  • Patients must be able to sign the document to participate in the clinical trial;
  • Patients with a suboptimal response to DBS treatment.

Exclusion criteria

Exclusion Criteria:

  • Patients with severe cognitive decline ( \<25);
  • Patients with major psychiatric issues;
  • Patients with any medical condition potentially interfering with DBS battery replacement surgery;
  • Patients that cannot tolerate an interruption of DBS stimulation;
  • Patients taking only one levodopa dose per day;
  • Patients with no LFPs recorded from any contacts pair, during intraoperatory IPG replacement procedure;
  • Pregnant or breastfeeding women.
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

MMSE and MoCA

Short tests of memory and thinking, each scored out of 30. Lower scores suggest more difficulty; criteria give a range, either to include people with memory problems or to leave them out.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
6 participants (actual)

Study arms

  • Experimental
    adaptive DBS

    adaptive Deep Brain Stimulation, by AlphaDBSvext.

    Device: adaptive Deep Brain Stimulation

  • Active comparator
    conventional DBS

    conventional Deep Brain Stimulation, by AlphaDBSvext.

    Device: conventional Deep Brain Stimulation

Interventions

  • Deviceadaptive Deep Brain Stimulation

    The investigational medical device ("AlphaDBSvext") is a portable, external, dual mode stimulator that can deliver adaptive DBS or conventional DBS for the treatment of PD. In the adaptive mode, the device records Local Field Potential activity from the implanted DBS electrode and simultaneously delivers stimulation through the same electrode based on the recorded signal.

  • Deviceconventional Deep Brain Stimulation

    The same investigational medical device ("AlphaDBSvext") is used to deliver conventional DBS for the treatment of PD. In the conventional mode it delivers constant stimulation.

06

What researchers measure

Primary outcomes

  1. Total Electrical Energy Delivered (TEED) to the patient

    Difference in the TEED delivered to the patient in adaptive DBS versus conventional DBS mode.

    Time frame: One day.

Secondary outcomes

  1. Incidence of device related Adverse Events (safety and tolerability)

    Number of device relate Adverse Events or abnormal vital signs.

    Time frame: One day.

  2. Unified Parkinson's Disease Rating Scale (UPDRS) part III

    Evaluation of motor symptoms through (UPDRS) part III, motor examination. The total score is computed from scores obtained on 18 items (0 best condition-4 worst condition), some considering multiple body parts.

    Time frame: One day.

  3. Unified Dyskinesia Rating Scale (UDysRS)

    Evaluation of dyskinesia through repeated clinical assessments (using UDysRS).

    Time frame: One day.

Other outcomes

  1. Time "off"

    Evaluation of time "off" through patient diary.

    Time frame: One day.

  2. DBS Impairment Scale (DBS-IS)

    Self assessment through questionnaire.

    Time frame: One day.

  3. Local field potentials (LFP) during gait analysis

    Evaluation of LFP recording from DBS electrodes during gait analysis.

    Time frame: Four hours.

  4. Local field potentials (LFP) during speech analysis

    Evaluation of LFP recording from DBS electrodes during speech analysis.

    Time frame: Four hours.

  5. Local field potentials (LFP) during sleep analysis

    Evaluation of LFP recording from DBS electrodes during sleep analysis.

    Time frame: One night.

07

Study locations

4 sites
  • Centro Parkinson e Disturbi del Movimento ASST G.Pini- CTO
    Milano, Italy
  • Fondazione IRCCS Ca'Granda Ospedale Maggiore Policlinico
    Milano, Italy
  • IRCCS Istituto Ortopedico Galeazzi
    Milano, Italy
  • Fondazione Istituto Neurologico Nazionale Casimiro Mondino
    Pavia, Italy
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Jun 2017 to primary completion in Dec 2018, 18 months.

How these figures are worked out, and which studies are left out of them.

Registered
Dec 15, 2017
First posted
Feb 6, 2018
StartActual
Jun 1, 2017
Primary completionActual
Dec 30, 2018
CompletionActual
Dec 30, 2018
Last update
Nov 19, 2020
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Nov 19, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT03422757
Lead sponsor
Newronika
Responsible party
Sponsor
First posted
Feb 6, 2018
Start date
Jun 1, 2017
Primary completion
Dec 30, 2018
Completion
Dec 30, 2018
Last update
Nov 19, 2020

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in Nov 2020. You cannot join it, but the record below documents what was studied.

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Discussion

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