Injectable treatment for vocal fold paralysis using allograft adipose matrix

Safety and Efficacy of Allograft Adipose Matrix Injectable for Glottal Insufficiency

Phase 3 Interventional University of Southern California · NCT04700566

This study is testing if an injectable treatment called Renuva can help improve voice quality for people with vocal fold paralysis by providing a better and longer-lasting solution than current options.

Quick facts

PhasePhase 3
Study typeInterventional
Enrollment50 (estimated)
Ages18 Years and up
SexAll
SponsorUniversity of Southern California Academic / other
Locations1 site (Los Angeles, California)
Trial IDNCT04700566 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the use of Renuva, an allograft adipose matrix, as an injectable treatment for vocal fold paralysis, specifically targeting glottic insufficiency. The study aims to assess the safety and efficacy of this injectable, which is designed to stimulate adipogenesis and integrate well with vocal fold tissues. By comparing Renuva to existing injectable options, the trial seeks to determine if it can provide a more effective and longer-lasting solution for patients suffering from vocal fold immobility. Participants will receive unilateral injections and will be monitored for outcomes related to voice quality and safety.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older with unilateral vocal fold immobility and glottal insufficiency lasting at least two weeks.

Not a fit: Patients with known allergies to lidocaine, active laryngeal infections, or significant comorbid laryngeal conditions may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could offer a safer and more effective long-term solution for patients with vocal fold paralysis.

How similar studies have performed: While various injectable materials have been used for vocal fold augmentation, the specific use of Renuva as an injectable for this purpose is novel and has not been extensively tested in prior studies.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* • Age ≥ 18 years old

  * Unilateral vocal fold immobility with glottal insufficiency present for at least 2 weeks from onset
  * Willingness to partake in study and follow-up as documented by signed informed consent

Exclusion Criteria:

* History of allergy/hypersensitivity to lidocaine or amide-based anesthetics
* Pregnancy
* Active infection or inflammation in the larynx (presence of acute laryngeal infection caused by bacteria/virus or fungus)
* Comorbid known laryngeal conditions including but not limited to vocal fold scar, vocal tremor, laryngeal dystonia, etc. that would warrant other interventions for optimal treatment
* History of laryngeal surgery
* Life expectancy of less than 6 months

Where this trial is running

Los Angeles, California

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Vocal Fold Palsy
Last reviewed 2026-06-09 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.