Intravenous Gentamicin Therapy for Recessive Dystrophic Epidermolysis Bullosa (RDEB)

NCT03392909 | Unknown Phase 1 DMC FDA Drug

• 1 other identifier: HS-17-00995
• Study Type: interventional
• Target: 9
• Locations: 1 country
• Sites: 1

Brief Summary

Recessive dystrophic epidermolysis bullosa (RDEB) is an incurable, devastating, inherited skin disease caused by mutations in the COL7A1 gene that encodes for type VII collagen (C7), the major component of anchoring fibrils (AFs), structures that mediate epidermal-dermal adherence. Thirty percent of RDEB patients have nonsense mutations. The investigators recently demonstrated in 5 such patients that intradermal and topical gentamicin induced "read-through" of their nonsense mutations and created robust and sustained new C7 and AFs at the dermal-epidermal junction (DEJ) of their skin and also stimulated wound closure and reduced new blister formation. No untoward side effects occurred. Herein, the investigators propose evaluating the safety and efficacy of intravenous gentamicin in these patients. In theory, this intravenous administration has the possibility of treating simultaneously all of the patients' skin wounds. The milestones will be increased C7 and AFs in the patients' DEJ, improved EB Disease Activity Scores, and absence of gentamicin side effects.

Conditions

Recessive Dystrophic Epidermolysis Bullosa

Keywords

Nonsense Mutations

Outcome Measures

Primary Outcomes (3)

• Full-length type VII collagen expression

  Increased expression of full-length type VII collagen as assessed by immunofluorescence

  6 months

• Generation of anchoring fibrils

  Generation of new anchoring fibrils as assessed by immuno-electron microscopy

  6 months

• Absence of gentamicin side effects

  Absence of gentamicin side effects, especially the detection of any ototoxicity or nephrotoxicity

  6 months

Secondary Outcomes (2)

• Improved Disease Activity scores

  6 months

• Improved Quality of Life score

  6 months

Study Arms (1)

Intravenous Gentamicin

EXPERIMENTAL

Intravenous gentamicin (7.5 mgs/kg) daily for for either 14 days and then stopped or twice weekly for three months and then stopped.

Drug: Gentamicin

Interventions

Gentamicin DRUG

Short-term intravenous gentamicin therapy should have the advantage of treating all of the patient's multiple skin wounds simultaneously. Six patients (three adults and 3 children) will receive intravenous gentamicin (7.5 mgs/kg) daily for 14 days and then stopped. Three adult patients will receive intravenous gentamicin (7.5mg/kg) biweekly for three months and then stopped.

Also known as: Gentamicin Sulfate

Intravenous Gentamicin

Eligibility Criteria

• Age: 7 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

• Provision of signed and dated informed consent form
• Stated willingness to comply with all study procedures and availability for the duration of the study
• Male or female, aged 7 and up can participate in the 14 day IV gentamicin trial. Male or female, aged 18 and up can participate in the 3 month IV gentamicin trial.
• Been diagnosed with recessive dystrophic epidermolysis bullosa (RDEB) and with a nonsense mutation in the COL7A1 gene.
• Immunofluorescence evaluation of skin biopsies reveals absence or decreased intensity of C7 expression at their DEJ (dermal epidermal junction) compared with normal human skin biopsies.
• Cultured fibroblasts from patient skin synthesize and secrete full-length, 290kDa C7 alpha chains in the presence of supplemented gentamicin (400 μg/ml in culture).
• Ability to sit or lie down for over 30 minutes for IV infusions. For those in the 3 month trial, to be willing to continue treatment at home under the supervision of licensed and trained infusion nurses.

You may not qualify if:

• Recent exposure to gentamicin within the past 6 weeks.
• Pre-existing known auditory impairment.
• Pre-existing known renal impairment.
• Pre-existing known allergies to aminoglycosides or sulfate compounds.
• Pregnancy or lactation
• Current use of medications with known ototoxicity or nephrotoxicity.
• Current enrollment in another experimental clinical trial involving systemic treatment with C7 or C7 producing products for the treatment of RDEB.

Sponsors & Collaborators

• University of Southern California: lead

Study Sites (1)

University of Southern California

Los Angeles, California, 90033, United States

RECRUITING

MeSH Terms

Conditions

Epidermolysis Bullosa Dystrophica

Interventions

Gentamicins

Condition Hierarchy (Ancestors)

Epidermolysis Bullosa; Skin Abnormalities; Congenital Abnormalities; Congenital, Hereditary, and Neonatal Diseases and Abnormalities; Skin Diseases, Genetic; Genetic Diseases, Inborn; Collagen Diseases; Connective Tissue Diseases; Skin and Connective Tissue Diseases; Skin Diseases; Skin Diseases, Vesiculobullous

Intervention Hierarchy (Ancestors)

Aminoglycosides; Glycosides; Carbohydrates

Study Officials

• David T. Woodley, MD

  Professor, University of Southern California

  PRINCIPAL INVESTIGATOR

• Mei Chen, Ph.D

  Professor, University of Southern California

  PRINCIPAL INVESTIGATOR

Central Study Contacts

David T Woodley, MD

CONTACT

626-533-6028; dwoodley@usc.edu

Mei Chen, Ph.D

CONTACT

323-865-0621; chenm@usc.edu

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: NA
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Professor

Study Record Dates

• First Submitted: January 2, 2018
• First Posted: January 8, 2018
• Study Start: July 5, 2018
• Primary Completion: December 1, 2023
• Study Completion: December 1, 2023
• Last Updated: November 3, 2022

Record last verified: 2022-11

Data Sharing

• IPD Sharing: Will not share

Locations

US (1)