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Enrolling by Invitation

NCT Number: NCT06300502

Assessing the Efficacy of Repeat, Monthly Treatments of Deoxycholate for NF1 Associated Cutaneous Neurofibromas (cNFs)

The goal of this clinical trial is to evaluate the tolerability and effectiveness of multiple treatments of an FDA-approved drug in those with Neurofibromatosis Type 1 (NF1) Cutaneous Neurofibromas (cNFs). The main questions it aims to answer are:

Will performing:

* Up to 6 months treatment sessions * A minimum of 30 days apart * With up to 50 injections of deoxycholate into a maximum of 50 cNFs in a single region of the body (for a maximum total dose of 10 mL per monthly treatment session) result in tolerable local skin reactions and reduction in both individual cNF size by >50% as well as improved cNF appearance in the treated field?

Researchers will compare treated tumors and control tumors to see if the treatment is effective.

Participants will:

* Receive up to 6 monthly treatments with Kybella (deoxycholate). Treatment for a given tumor will be stopped when the tumor is assessed as clear clinically. * Complete surveys asking about pain during and after treatments. * Complete surveys asking about satisfaction with the treatments. * Undergo 2D photography and 3D imaging of treatment areas. * Optionally, receive biopsies of up to 6 treated lesions to investigate characteristics of tumors that respond well to treatment as well as non-respondent tumors.

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Key information

Conditions

Neurofibromas, Cutaneous Congenital, Hereditary, and Neonatal Diseases and Abnormalities Genetic Diseases, Inborn Heredodegenerative Disorders, Nervous System Neoplasms Neoplasms by Histologic Type Neoplasms, Nerve Tissue Neoplastic Syndromes, Hereditary Nerve Sheath Neoplasms Nervous System Diseases Nervous System Neoplasms Neurocutaneous Syndromes Neurodegenerative Diseases Neurofibroma Neurofibromatoses Neurofibromatosis 1 Neuromuscular Diseases Peripheral Nervous System Diseases Peripheral Nervous System Neoplasms

Age range

18 year–85 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 1

Primary location

Wellman Center for Photomedicine

Boston, Massachusetts, 02114, United States

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Participant is an adult ≥18 years of age.
  • Participant has a diagnosis of NF1 based on germline genetic testing or by meeting ≥ 2 the following criteria:
  • Family history of NF1,
  • Six or more light brown ("cafe-au-lait") spots on the skin,
  • Presence of two or more neurofibromas of any type, or one or more plexiform neurofibromas,
  • Freckling under the arms or in the groin area,
  • Two or more pigmented, benign bumps on the eye's iris (Lisch nodules),
  • A distinctive bony lesion: dysplasia (abnormal growth) of the sphenoid bone behind the eye, or dysplasia of long bones, often in the lower leg,
  • Tumor on the optic nerve that may interfere with vision.
  • Participant is seeking treatment for cNF.
  • Participant has ≥ 6 paired cNF that are visible and measure 2 mm or more in size. The target treatment area must be amenable to both deoxycholate injections and surveillance with digital and 3D photography. Preferred locations are trunk (back or chest), arms and legs.
  • Participant is able and willing to comply with all visit, treatment and evaluation schedules and requirements.
  • Participant is able to understand and provide written informed consent.
  • Participant has no known allergy to deoxycholate.
  • Participant has no concurrent injury or wound in the target area.

Exclusion criteria

  • Participant cannot give informed consent or adhere to study schedule.
  • Participant is actively tanning during the course of the study.
  • Participant has a known allergy to deoxycholic acid.
  • For female participants: those who are pregnant.
  • Participant has any condition which, in the Investigator's opinion, would make it unsafe (for the participant or study personnel) to treat the participant as part of this research study.

Treatment and study plan

Kybella

Drug

Kybella is sterile 1% deoxycholic acid provided in a 2 mL single-use vial.

Other names: Deoxycholate, Deoxycholic acid

Primary outcomes

  1. Incidence of Treatment-Emergent Adverse Events [Safety and Tolerability]

    Time frame: 3 months after treatment

    Treatment will be considered tolerable if <40% of participants treated have a >grade 2 CTCAE v5 adverse event (AE).

Secondary outcomes

  1. Patient Reported Outcomes

    Time frame: Baseline, after treatment session #4, and at 3 months after final treatment.

    Using questionnaires we will determine the patients' reported outcomes. Patient Global Assessment: Patient rates degree of change of treated and control cNFs on a scale from -3 (no change) to 3 (very large improvement).

  2. Clinician Reported Outcomes

    Time frame: Baseline, after treatment session #4, and at 3 months after final treatment.

    Using questionnaires we will determine the clinicians' reported outcomes. Physician Global Assessment: Clinician rates degree of change of treated and control cNFs on a scale from -3 (no change) to 3 (very large improvement).

  3. VAS Pain Scale

    Time frame: Baseline, after each treatment session, 1 week after each treatment session, and 3 months after final treatment.

    Participants will be asked to rate their pain using a visual analog scale (0 to 10) at each treatment visit and 1 week post-treatment.

  4. Patient Satisfaction

    Time frame: Baseline, after treatment session #4, and at 3 months after final treatment.

    Satisfaction with each treatment modality is rated from 1 (very unsatisfied) to 5 (very satisfied).

  5. Rate of Healing

    Time frame: Baseline, 1 month, 2 months, 3 months, 4 months, 5 months, 6 months after baseline; 3 months after final treatment.

    Measured clinically via photography completed by a member of the study team at baseline, and all in-person visits.

  6. cNF Appearance (Height)

    Time frame: Baseline, after treatment session #4, and at 3 months after final treatment.

    Clinically completed 2D photography and 3D Cherry Imaging. Change from baseline in height of cNFs.

  7. cNF Appearance (Volume)

    Time frame: Baseline, after treatment session #4, and at 3 months after final treatment.

    Clinically completed 2D photography and 3D Cherry Imaging. Change from baseline in volume of cNFs.

Other outcomes

  1. Biologic Effect/Histology

    Time frame: 3 months after final treatment session.

    A subset of 2-6 cNFs from the treatment region will be assessed after the final treatment session.

Sponsors and collaborators

Lead sponsor

Massachusetts General Hospital

Other

Collaborators

  • Johns Hopkins University

Registry information

Official study title

Assessing the Efficacy of Repeat, Monthly Treatments of Cutaneous Neurofibromas (cNFs)

Important dates

Study start
2025
Primary completion
2027
Study completion
2027
First posted
Mar 8, 2024
Registry last updated
Apr 22, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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