A Long-Term Extension Study for Participants Previously Treated with EB-101 for the Treatment of Recessive Dystrophic Epidermolysis Bullosa (RDEB)
This is an open-label, long-term, follow-up study in participants from prior interventional trials involving surgical application of gene-corrected keratinocyte sheets (EB-101) for the treatment of RDEB wound sites. Up to 22 participants will be enrolled in this study, with follow-up through at least 5 years post treatment. Patient-reported outcomes and safety will be assessed throughout the study, and where applicable, compared to Baseline of the preceding interventional EB-101 trial. Upon completion, participants will transfer to an annual monitoring program for additional 10 years of phone visits.
Study Type
OBSERVATIONAL
Enrollment
22
This is non-interventional and follows patients treated with EB-101
Stanford University
Redwood City, California, United States
University of Massachusetts Medical School
Worcester, Massachusetts, United States
Wound Closure
Proportion of RDEB wounds with healing ≥50%, ≥75%, and 100% at all clinic visits up to Month 54 as determined by direct investigator assessment.
Time frame: 5 years
Pain Reduction
Pain reduction assessed by Wong-Baker FACES scale at all clinic visits up to Month 54.
Time frame: 5 years
Itch Severity
Longitudinal change of Itch severity scores assessed at all clinic visits up to Week 54.
Time frame: 5 years
Zarit Burden Interview
Longitudinal change of Zarit Burden Interview Short Form (ZBI-12) for caregiver scores related to wound care, assessed at all clinic visits up to Month 54.
Time frame: 5 years
Quality of Life
Quality of Life in Epidermolysis Bullosa (QOLEB) scores assessed at all clinic visits up to Month 54.
Time frame: 5 years
Caregiver Global impression of Pain
Caregiver Global impression of Pain (CrGI-Pain) scores assessed at all clinic visits up to Month 54.
Time frame: 5 years
Wound Infection and Adverse Events
The number of participants and wounds that have an infection or any related adverse event.
Time frame: 5 years
The number of treatment-emergent adverse events.
The number of treatment-emergent adverse events.
Time frame: 5 years
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Serious Adverse Events
The number of participants and wounds that result in hospitalization (serious adverse event \[SAE\]).
Time frame: 5 years
Incidence of squamous cell carcinoma.
Incidence of squamous cell carcinoma.
Time frame: 5 years
Replication-competent retrovirus (RCR) status
Replication-competent retrovirus (RCR) status
Time frame: 5 years