Trial Search Results

Sphenopalatine Ganglion Stimulation for the Treatment of Chronic Cluster Headache

The primary objective of the study is to demonstrate the safety and efficacy of SPG stimulation with the ATI Neurostimulation System when used to treat acute cluster attacks in chronic cluster headache patients.

Stanford is currently not accepting patients for this trial.

Lead Sponsor:

Autonomic Technologies, Inc.

Stanford Investigator(s):


  • Device: ATI Neurostimulation System




Inclusion Criteria:

   - Age from ≥22 years old.

   - Subject has been diagnosed with chronic cluster headache according to the 2013 ICHD,
   3rd edition (beta version), criterion 3.1.2.

   - Subject reports a minimum of 4 cluster attacks per week on the side of their dominant
   headache laterality. Subjects who report more than 8 attacks per day or attack
   duration of less than 30 minutes (untreated or unsuccessfully treated) must have been
   tested to rule out other forms of trigeminal autonomic cephalalgias.

   - Both subject and physician judge previously or currently used preventive and/or acute
   cluster headache treatment to be inadequate.

   - Subject is able to distinguish cluster attacks from other headaches (i.e., migraine,
   tension-type headaches).

   - Subject agrees to not use therapy involving TENS or magnetic field treatment while the
   Neurostimulator is implanted.

   - Subject agrees to not participate in supplemental or alternative therapy, including
   acupuncture and spinal manipulation, from Study Enrollment through the end of the
   Experimental Period of the study.

   - Subject agrees to maintain current preventive headache medication regimens (no change
   in type, frequency, or dose) - except to manage tolerability - from Study Enrollment
   through the Experimental Period of the study.

   - Subject agrees not to use any acute medications, including oxygen therapy, for their
   treatable cluster attacks during the Experimental Period until after they have used
   SPG stimulation therapy for at least 15 minutes.

   - Subject has had a dental examination and cleaning in the past six (6) months.

   - Subject has the ability to read and comprehend, and to reliably record information as
   required by the Protocol.

   - Subject is able to provide written informed consent prior to participation in the

Exclusion Criteria:

   - Subject's overall health, age and/or comorbidities place subject at high risk for
   complications from surgery and/or general anesthesia.

   - Subject has had a change in type, dosage or dose frequency of preventive headache
   medications < one (1) month prior to study enrollment

   - Subject has been diagnosed with any other form of Trigeminal Autonomic Cephalalgias
   (e.g., paroxysmal hemicrania, SUNCT, etc.) or has a history of trigeminal neuralgia.

   - Subject has undergone facial surgery in the area of the pterygopalatine fossa or
   zygomaticomaxillary buttress ipsilateral to the planned implant site that, in the
   opinion of the Investigator, may lead to an inability to properly implant the

   - Subject currently has an active oral or dental abscess or an active maxillary sinus
   infection based on present symptoms.

   - Subject has been treated with therapeutic radiation to the facial region.

   - Subject has been diagnosed with any major infectious processes such as osteomyelitis,
   or primary or secondary malignancies involving the face that have been active or
   required treatment in the past six (6) months.

   - Subject has other significant pain problem(s) that, in the opinion of the
   Investigator, might confound the study assessments.

   - Subject is a woman of childbearing potential who is pregnant, nursing, or not using

   - Subject is currently participating or has participated in the last month in another
   clinical study in which the subject has, is, or will be exposed to an investigational
   or non-investigational drug or device.

   - Subject has demonstrated or is believed to be at risk of non-compliance with study
   procedures (e.g., for completing the diary or maintaining a stable headache medicine
   regimen or returning for required follow-up visits).

   - Subject is at risk of being unable to complete at least 1 year of follow-up (e.g., has
   plans to relocate).

   - Subject has had previous lesional radio-frequency (RF) ablation, balloon compression,
   gamma knife, or glycerol treatments of the ipsilateral sphenopalatine ganglion (SPG),
   trigeminal ganglion or any branch of the trigeminal nerve.

   - Subject has had blocks or non-lesional pulsed RF of the ipsilateral SPG in the last
   three (3) months.

   - Subject's pterygomaxillary fissure is less than 1.2 mm in width at the level of the
   vidian canal, as determined by CT scan.

   - Subject has undergone onabotulinumtoxinA injections of the head and/or neck or has had
   an occipital nerve block in the last three (3) months.

   - Subject has or requires an active implanted medical device, such as a
   pacemaker/defibrillator, other neurostimulator, or cochlear implant.

   - Subject is expected to require diathermy, electroconvulsive therapy (ECT), or
   transcranial magnetic stimulation (TMS).

   - Subject has a history of bleeding disorders or coagulopathy and is unable to
   discontinue anticoagulation, antiplatelet, or GP IIb IIIa inhibitor medication in
   preparation for the implantation procedure.

   - In the opinion of the Investigator, the subject currently meets criteria as defined by
   the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR) for an active
   major depressive episode or for active significant psychiatric disorders, including
   dementia, uncontrolled general anxiety disorder, psychotic disorders or uncontrolled
   bipolar disorder. Exclusion criteria also include: active psychosis, untreated severe
   anxiety disorder, homicidal ideation, significant Axis II disorders and significant
   untreated sleep disorders.

   - Subject currently has clinically significant drug or alcohol abuse as defined by
   DSM-IV-TR or is unable to refrain from substance abuse throughout the study.

   - Subject has a history of malignancy or any other condition that requires MRI

   - Subject has a history of allergic or hypersensitive reactions to titanium, platinum,
   or implant grade silicone-polyurethane copolymers.

   - Subject may be, in the opinion of the Investigator, at greater risk of infection
   (e.g., subjects with diabetes, taking steroids, with gingivitis/periodontitis,
   malnutrition or anorexia/bulimia) or at higher risk of harm from infections.

   - Subject is currently using a tobacco cessation regimen (e.g. Wellbutrin, Zyban,
   Aplenzin, etc.).

   - Subject is not suitable for the study for any reason (including overall health,
   pre-existing conditions or medications) in the judgment of the Investigator.

Ages Eligible for Study

22 Years - N/A

Genders Eligible for Study


Not currently accepting new patients for this trial

Contact Information

Stanford University
School of Medicine
300 Pasteur Drive
Stanford, CA 94305