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ClinicalTrials.gov 4 recruiting now early-phase tilt small index

Spasmodic Dysphonia: early-phase trial registry

4 of 8 indexed Spasmodic Dysphonia trials are currently recruiting, with more weight in Phase 1-2.

Corpus placement: #2,176 of 28,707 conditions by registered trial count.

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8 US clinical trials · 4 currently recruiting · #2,176 of 28,707 conditions by registered trial count

Spasmodic Dysphonia: 8 US clinical trials tracked, 4 recruiting.

Spasmodic Dysphonia is the subject of 8 registered US clinical trials on ClinicalTrials.gov, 4 of them currently open to new participants. 0 are in Phase 3-4 (later-stage) and 3 in Phase 1-2 (earlier-stage). The most active sponsor is Massachusetts Eye and Ear Infirmary, running 4 of these trials.

Enrollment posture brief

Registry condition spasmodic-dysphonia

OPEN 4 | RECR 50% | LATE 0 | EARLY 3 | RANK #2176 | SPON 4

Volume-matched condition peers

Nearest open-share peer: Abdominal Aortic Aneurysms (50% recruiting · 6 trials)

Activity, Motor75%Achalasia50%Spasmodic Dysphonia (this)50%Abdominal Cancer25%Acne Scars - Mixed Atrophic 25%
Open-enrollment share among volume-matched conditions near Spasmodic Dysphonia

Spasmodic Dysphonia lists 4 open slots (50% of 8 indexed trials). Peers are matched on registered volume, not therapeutic-area browse lists. How peer matching works →

Key findings

What ClinicalTrials.gov does not surface for Spasmodic Dysphonia on its own pages , computed from the registry mirror as of 2026-08-08. Each line carries its own denominator so it can be quoted as it stands.

  1. Spasmodic Dysphonia is recruiting above its size-band peers.

    4 of 8 indexed trials (50%) are open to enrollment, against a 46.5% average across 27,806 conditions with fewer than 20 trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.

  2. One sponsor concentrates Spasmodic Dysphonia research.

    Massachusetts Eye and Ear Infirmary accounts for 4 of 8 trials (50%). 5 distinct sponsors appear on at least one study for this condition label.

  3. Typical Spasmodic Dysphonia enrolment sits around 120 participants.

    Median target enrolment is 120 among the 8 trials that report a genuine target (sentinel values excluded). 3 of those (37.5%) plan for fewer than 100 participants.

  4. Spasmodic Dysphonia splits between interventional and observational designs.

    5 interventional and 3 observational studies make up this index (62.5% interventional). Study type is sponsor-reported on ClinicalTrials.gov.

Phase 12Phase 21

Phase Distribution

PhaseTrial count
Phase 1 2
Phase 2 1

Top Sponsors

Massachusetts Eye and Ear Infirmary 4 trials
Kristina Simonyan 1 trials
University of Minnesota 1 trials
National Institute of Neurological Disorders and Stroke (NINDS) 1 trials
University of Florida 1 trials

Named interventions

Most-linked intervention names on Spasmodic Dysphonia records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.

1Hz repetitive transcranial magnetic stimulation (rTMS) Device
1 trials
Sodium Oxybate Drug
1 trials
Zinc gluconate supplement Drug
1 trials
Deep Brain Stimulation Procedure
1 trials
Laryngeal sensory block with topical bupivacaine Drug
1 trials
Brain imaging Other
1 trials
Clinical assessments of laryngeal function Other
1 trials
Botulinum toxin type A Drug
1 trials

US sites by state

Facility locations filed on Spasmodic Dysphonia trials. A trial with sites in several states counts in each.

Massachusetts 5 trials
Minnesota 1 trials
Maryland 1 trials
Florida 1 trials

Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.

Related

Read our methodology - how this data is sourced, computed, and verified.

What to do with this Spasmodic Dysphonia page

8 registered trials, 4 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.

Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.

Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This Spasmodic Dysphonia condition card totals 8 registered trials; most-linked intervention 1Hz repetitive transcranial magnetic stimulation (rTMS); top US site state Massachusetts. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.