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This study evaluates a gene therapy (skin sheets made from the patient's own cells with the COL7A1 gene inserted) in patients with recessive dystrophic epidermolysis bullosa (RDEB, an inherited disease causing severe skin blistering/wounds). It included patients aged 13 and older with confirmed COL7A1 mutations and open skin wounds. It was a Phase 1/Phase 2 study and has been completed.
The summary above is a plain-language rendering of the official record. The original English title is shown for reference.
Criteria are reproduced from the ClinicalTrials.gov record in the original English. Only the trial team can determine eligibility.
Inclusion Criteria:
1. Clinical diagnosis of recessive dystrophic epidermolysis bullosa (RDEB)
2. 13 years old or older and willing and able to give assent/consent
3. Confirmation of RDEB diagnosis by immunofluorescence (IF) and electron microscopy (EM)
4. NC1\[+\] and mAb LH24 antibody staining negative
5. RDEB type VII collagen mutations in subject and carrier parents confirmed
6. At least 100 to 200 cm2 areas of open erosions on the trunk and/or extremities suitable for skin grafting
7. Able to undergo adequate anesthesia to allow grafting procedures to take place.
Exclusion Criteria:
1. Medical instability limiting ability to travel to Stanford University Medical Center
2. The presence of medical illness expected to complicate participation and/or compromise the safety of this technique, such as active infection with HIV, hepatitis B or hepatitis C, as determined by hepatitis B surface antigen screening, detection of hepatitis C antibodies, or positive result of hepatitis C polymerase chain reaction (PCR) analysis.
3. Antibodies to type VII collagen associated antigens
4. Active infection in the area that will undergo grafting
5. Evidence of systemic infection
6. Current evidence or a history of squamous cell carcinoma in the area that will undergo grafting
7. Active drug or alcohol addiction
8. Hypersensitivity to vancomycin or amikacin
9. Receipt of chemical or biological study product for the specific treatment of RDEB in the past six months
10. Positive pregnancy test or breast-feeding
11. Clinically significant abnormalities (Grade 2 or higher on the National Cancer Institute \[NCI\] toxicity scale) on laboratory tests performed prior to grafting, except for the following specific exclusionary laboratory threshold results, subject to approval or exemption by the EB physician:
* Albumin \< 2.5 g/dL
* Leukocytes \> 20K/uL
* Hemoglobin \< 7.5 g/dL. Low hemoglobin will be treated at the discretion of the investigators and the EB physician.
* Additional exceptions may be made at the discretion of the investigators and the EB physician.
12. Clinically significant abnormalities (Grade 2 or higher on the NCI toxicity scale) identified through medical history and physical examination on Day 0, with the following exceptions:
* Anorexia, can enroll up to Grade 4 (inclusive)
* Constipation, can enroll up to Grade 2 (inclusive)
* Dysphagia, can enroll up to Grade 4 (inclusive)
* Keratitis, can enroll up to Grade 4 (inclusive)
* Bone pain, can enroll up to Grade 2 (inclusive)
* Additional exceptions may be made at the discretion of the investigators and the EB physician.