ClinicalTrials.gg
RecruitingNCT07709754PULSARUpdated Oct 13, 2026

PULmonary Stimulation for Asthma Relief

An interventional study of Spinal Cord Stimulation in Moderate to Severe Asthma, sponsored by Spiro Medical, Inc.. Recruiting at 3 sites in United States. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2026-10-13.

Sponsored by Spiro Medical, Inc. · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Started Aug 2026; still recruiting 2 months later.
Updated Oct 13, 2026Eligibility revised2 sites added+1 moreGo to Updates ↓
Phase
Not applicable
Study type
Interventional
Enrollment
30
Allocation
Randomized
Ages
18 Years to 75 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 1,694 studies in Asthma with a site in United States — 134 open to participants now, 188 under way, 19 of them phase 3. Asthma · United States.

Planned enrollment
1,018th of 1,353
30 · median 100
Started
2026
with 52 others
No phase
483 of 1,694
43 open now
Primary completion
2027-01
later than 62 of 183 live
Registered
1,679th of 1,694
by date

Among the 1,694 studies in Asthma with a site in United States, this one is the 1,018th largest by planned enrollment of the 1,353 interventional ones that give a count, is one of 53 that started in 2026, is one of 483 with no phase, reaches primary completion later than 62 of the 183 other live ones, and was the 1,679th registered.

Asthma

4,841 studies on the registry are indexed under Asthma; 600 are open to participants now.

Browse Asthma studies →

Open to participants now

134 of the 1,694 studies in Asthma with a site in United States are open now. Recruiting first, the newest first:

128 more — sign in →

All 134 open studies →

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

Who these studies take

Of the 417 Asthma studies recruiting now, 140 (34%) set no upper age limit and 205 (49%) stop at 75 or younger; 146 take children under 18; 104 take healthy volunteers.

This study: 18 Years to 75 Years · all sexes · no healthy volunteers.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

Was this useful?
Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 1,694 studies in Asthma with a site in United States, or all of them as a file.
02

Study summary

This study aims to assess the safety and efficacy of Pulmonary Neuromodulation in patients suffering from moderate to severe asthma

Read the detailed description

The study will be a prospective, randomized, controlled, multi-Center, delayed activation feasibility study.

The study is expected to complete enrollment in approximately 3 months and follow the patients per protocol for 6 months. The study will be conducted at 3-5 sites in the United States.

03

Conditions studied

  • Moderate to Severe Asthma

Browse trials for

Keywords

  • asthma
  • severe asthma
  • neuromodulation
04

Who can participate

The criteria were revised on the registry on Oct 13, 2026. See what changed

Ages eligible
18 Years to 75 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

  • Subject has a diagnosis of uncontrolled moderate to severe asthma, diagnosed by an Allergist or Pulmonologist, for a minimum of 1 year prior to randomization. "Uncontrolled" status defined by poor symptom control, despite optimized treatment with high-dose ICS-LABA and/or biologics who have a baseline ACT score less than or equal to 15
  • Subjects previously or currently on biologics for at least 6 months (Omalizumab, Mepolizumab, Reslizumab, Benralizumab, Dupilumab, Tezepelumab) that are uncontrolled and meet all inclusion and exclusion criteria
  • 18 to 75 years of age
  • Subjects have a baseline AQLQ of less than 2.5
  • Subject is a surgical candidate with no for PNM implantation

Exclusion criteria

Exclusion Criteria:

  • > 35
  • Current smokers or subjects with a significant smoking history (e.g., >10 pack years for subjects less than 40 years of age and >15 pack years for subjects 40 years and older) who have smoked within the last 6 months.
  • Other chronic lung diseases including (but not limited to) cystic fibrosis, (COPD), idiopathic pulmonary fibrosis (IPF), chronic bronchitis, vocal cord dysfunction, eosinophilic granulomatosis with polyangiitis (EGPA), history of lung cancer, or interstitial lung disease, severe scoliosis or chest wall deformities that affect lung function, or congenital disorders of the lungs or airways.
  • Requires continuous anticoagulant medications or taking alternative anticoagulant drugs or supplements within 10 days of implantation
  • History of recurrent surgical infections (e.g. MRSA)
  • In the 6 weeks prior to enrollment the subject has had a lower respiratory tract infection or asthma exacerbation that required: antibiotics, or systemic .
  • Patients prescribed systemic corticosteroids for any condition, other than asthma, in the last 6 weeks. Subjects with asthma on oral corticosteroids taking more than 15mg/day.
  • Significant coronary artery occlusive disease, angina, history of myocardial infarction and/or coronary artery stent(s), congestive heart failure, or uncontrolled cardiac arrythmias, cardiac stress test within the last 6 months with an of less than 45%
  • History of thoracic spine surgery and or spinal abnormalities, i.e., no more than 5 lumbar vertebrae, no scoliosis, or spinal deformities
  • Any significant medical condition that is likely to interfere with study procedures, device operation, or likely to confound evaluation of study endpoints (e.g. Crohn's disease, moderate to severe fibromyalgia, chronic pain, etc.) or a medical condition that requires the subject to be treated with systemic opioids other than for post-surgical pain
  • Any neurological condition that could interfere with normal lung function, including stroke, epilepsy, multiple sclerosis, Parkinson's disease, peripheral neuropathy, or spinal cord injury (e.g., paraplegia)
  • Uncontrolled diabetes ( > 8%, documented in the last three (3) months) or other medical condition determined by the Investigator that should be excluded
  • Documented history of allergic response to titanium, platinum, polyurethane, epoxy, or silicone
  • Planning to have diathermy, surgery requiring electrocautery, or high output ultrasonic exposure during the course of the study
  • Any other implanted devices (e.g., drug delivery pumps, pacemaker, ICD) including neurostimulators whether turned on or off. Passive implants (e.g., prostheses) are allowed, but no implanted metal should be at the Neurostimulator implant site, both the IPG or lead.
  • A female with a positive urine pregnancy test or not using adequate
  • Currently participating in another treatment clinical trial
  • Subject lacks capacity to consent for themselves
Terms in these criteria, in plain language(8)

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.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

COPD

Chronic obstructive pulmonary disease: long-term lung disease that makes it hard to breathe out, including emphysema and chronic bronchitis.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

LVEF (left ventricular ejection fraction)

The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

HbA1c

A blood test of average blood sugar over the past two to three months, given as a percentage or in mmol/mol. 6.5% (48 mmol/mol) or more is the usual threshold for diabetes, normally confirmed by a second test.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

05

Study design

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

Study arms

  • Experimental
    Treatment arm

    Receives full Spinal Cord Stimulation implant on Day 0. Therapy is activated on Day 0. Safety and efficacy are assessed at 2 weeks, 1 month, 3 months, 4 months, 5 months and 6 months.

    Device: Spinal Cord Stimulation

  • Sham comparator
    Delayed activation arm

    Receives full Spinal Cord Stimulation implant on Day 0. Therapy is activated on Day 90. Safety and efficacy are assessed at 2 weeks, 1 month, 3 months, 3.5 months, 4 months, 5 months and 6 months.

    Device: Spinal Cord Stimulation

Interventions

  • DeviceSpinal Cord Stimulation

    Implantation of a Spinal Cord Stimulation system

    Also known as: Pulmonary Neuromodulation

06

What researchers measure

Primary outcomes

  1. ACT score

    Proportion of subjects within both groups who achieve an Asthma Control Test (ACT) score \>19

    Time frame: 3 months

Secondary outcomes

  1. Asthma related Quality of Life Questionnaire (AQLQ)

    Proportion of subjects within each group who achieve a clinically meaningful improvement in AQLQ

    Time frame: 3 months

07

Study locations

2 of 3 sites recruiting
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Aug 2026 (actual). Primary completion is estimated for Jan 2027, 5 months after the start.

Of 50 industry-sponsored interventional studies with no phase under Asthma, half reached primary completion within 12 months of starting (the median), counting those still running; a quarter within 5 and three quarters within 24. This study's planned 5 months is below that.

Counting every sponsor, half of 649 studies reached it within 23 months; a quarter within 10 and three quarters within 48.

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

Registered
Jul 13, 2026
First posted
Jul 17, 2026
StartActual
Aug 30, 2026
Primary completionEst.
Jan 2027
CompletionEst.
Jun 2027
Last update
Oct 13, 2026
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.
Sites
2 sites added, 1 site removed
Show 2 added (2 United States)
  • University of Florida Health · Gainesville, United States
  • Orlando Health · Orlando, United States
Show 1 removed
  • University of Florida Health · Gainseville, United States
Oct 13, 2026
Eligibility
1 exclusion criterion edited
What changed in the criteria
Exclusion criteria
  • EditedHistory of thoracic spine surgery and has noor spinal abnormalities, i.e., no more than 5 lumbar vertebrae, no scoliosis, or spinal deformities
Oct 13, 2026
Show all 1 update
  1. Oct 13, 2026
    2 sites added, 1 site removed
    Show 2 added (2 United States)
    • University of Florida Health · Gainesville, United States
    • Orlando Health · Orlando, United States
    Show 1 removed
    • University of Florida Health · Gainseville, United States
    Eligibility 1 exclusion criterion edited
    What changed in the criteria
    Exclusion criteria
    • EditedHistory of thoracic spine surgery and has noor spinal abnormalities, i.e., no more than 5 lumbar vertebrae, no scoliosis, or spinal deformities
    + 1 other change: verification date

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT07709754
Lead sponsor
Spiro Medical, Inc.
Responsible party
Sponsor
First posted
Jul 17, 2026
Start date
Aug 30, 2026
Primary completion
Jan 2027 (estimated)
Completion
Jun 2027 (estimated)
Last update
Oct 13, 2026

Study contacts

Kurt Gehlsen, MD, PhD
Contact
clinical@spiromedical.com
949-421-6584

Oversight

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

Interested in this study?

Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.

Contact study team

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion