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accelerated intermittent theta burst stimulation

Phase 2

Long COVID | Unknown | Infectious Disease |United Therapeutics Corporation|Last Updated: Jul 15, 2025

Success Probability

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Trial Design

RandomizedDouble-BlindSHAM_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment60

FDA Designations

No designations recorded

Clinical trial landscape

accelerated intermittent theta burst stimulation · 1 trial · 5 indications

Phase 2 1
NCT06940609Magnetic Resonance Analysis of Neural Inflammatory Factors and External StimulationLong COVID
RECRUITING60 Analytics
PHASE2RECRUITING
Magnetic Resonance Analysis of Neural Inflammatory Factors and External Stimulation
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Study Endpoints

Primary Endpoints

Aim 1
From baseline to end of treatment at 2 weeks

Demonstrate that accelerated iTBS is effective and feasible for reducing neuro-PASC symptoms. Change in the score in the "Cognitive Function/Brain Fog Symptoms" score from the PACS: Post-acute COVID-19 Syndrome Questionnaire, where low scores are more severe symptoms compared to higher scores. Scale 1-Severly Unable to 4-Able. Higher scores show improvement in symptoms.

Aim 2
From baseline to end of treatment at 2 weeks

Identify neurometabolic and structural features associated with outcomes in MANIFEST. ADCcho in the thalamus measured using dMRS. The apparent diffusion coefficient of choline (ADCcho) is a measure of activity of microglia, higher values indicate higher levels of microglia. Decreased ADCcho means less microglia activation, and less inflammation.

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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelCROSSOVER
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Sham accelerated iTBSSHAM_COMPARATORSham stimulation is delivered using the same coil as active stimulation, producing an equivalent sound, however it is shielded so that no effective magnetic field reaches the participant's brain. To blind participants to active versus sham condition, a mild electrical skin stimulation that has no brain effects is delivered simultaneously with iTBS at the scalp to both active and sham groups, creating the same sense of skin sensation in both groups.
Active accelerated iTBSEXPERIMENTALParticipants will be assigned to receive fMRI-guided iTBS (5 days, 5 sessions/day) to the left dorsolateral prefrontal cortex (dlPFC) during the sham-controlled phase. Each participant is invited to undergo 25 more sessions (5 more days) of open label, unblinded active accelerated fMRI-guided iTBS to the left dlPFC.

Interventions

NameTypeDescription
accelerated intermittent theta burst stimulationDEVICEIntermittent theta burst stimulation (iTBS), a FDA-approved form of noninvasive neuromodulation, can reduce neuropsychiatric symptoms and modulate inflammation in the thalamus as detected using dMRS, suggesting a potentially effective and efficient treatment approach with a pathophysiological component that is readily quantifiable.
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Eligibility Criteria

Age Range18 Years to 80 Years
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: 1. aged 18-80 2. a documented diagnosis of PASC with evidence of ongoing symptoms as demonstrated by score of 12 on the NIH RECOVER Symptom List 3. have "brain fog" or cognitive difficulties as one of the ongoing symptoms 4. are fluent in English 5. if taking psychotropic medica...

Countries:United States
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Frequently asked questions about accelerated intermittent theta burst stimulation

What is accelerated intermittent theta burst stimulation used for in Long COVID?

Accelerated intermittent theta burst stimulation is an investigational therapy being studied for Long COVID, also known as Long COVID Syndrome, Long COVID-19 Syndrome, PASC, and Post Acute Sequelae of COVID 19. It is currently in Phase 2 clinical development and has not been approved by the FDA.

Who is developing accelerated intermittent theta burst stimulation?

Accelerated intermittent theta burst stimulation is being developed by United Therapeutics Corporation, a company traded on the NASDAQ under the ticker symbol UTHR. The therapy is currently in Phase 2 clinical trials for the treatment of Long COVID.

What phase is accelerated intermittent theta burst stimulation in?

Accelerated intermittent theta burst stimulation is in Phase 2 clinical development. It is an investigational therapy for Long COVID and is not yet approved by the FDA. The therapy is being evaluated in a randomized, double-blind, sham-controlled clinical trial.

What clinical trials is accelerated intermittent theta burst stimulation in?

Accelerated intermittent theta burst stimulation is being studied in a Phase 2 clinical trial with the identifier NCT06940609, titled Magnetic Resonance Analysis of Neural Inflammatory Factors and External Stimulation. The trial is currently recruiting 60 participants in the United States and is randomized, double-blind, and sham-controlled.

Is accelerated intermittent theta burst stimulation the same as other Long COVID treatments?

Accelerated intermittent theta burst stimulation is a distinct investigational therapy being studied specifically for Long COVID. It is not known to be the same as any other named treatment for this condition. The therapy is currently in Phase 2 clinical trials and has not been approved by regulatory authorities.