Fibrocell Reports Interim Results of Phase 1/2 Clinical Trial of FCX-007 Gene Therapy for Recessive Dystrophic Epidermolysis Bullosa
- Category: DNA RNA and Cells
- Published on Thursday, 28 September 2017 20:24
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– FCX-007 well-tolerated through 12 weeks post-administration with encouraging safety and positive early trends noted in wound healing and pharmacology signals –
– Data Safety Monitoring Board recommends continued enrollment and dosing –
EXTON, PA, USA I September 26, 2017 I Fibrocell Science, Inc. (NASDAQ:FCSC), a gene therapy company focused on transformational autologous cell-based therapies for skin and connective tissue diseases, today reported interim results in its Phase 1/2 clinical trial of FCX-007 for the treatment of recessive dystrophic epidermolysis bullosa (RDEB).
Three adult non-collagenous (NC)1+ patients have been dosed with a single intradermal injection session of FCX-007 in the margins of and across targeted wounds, as well as in separate intact skin sites. Five wounds were treated on the three subjects, ranging in size from 4.4cm2 to 13.1cm2.
Data from these patients show FCX-007 was well-tolerated through 12 weeks post-administration. There were no serious adverse events and no product related adverse events reported.
Wounds were evaluated during a monitoring period prior to dosing and they were observed to be open for up to eight months. Compared to the baseline measurement collected at Day 0 before the single intradermal injection session of FCX-007, at four weeks post-administration 100% (5/5) of wounds were > 75% healed. At 12 weeks post-administration, 80% (4/5) of wounds were > 70% healed.
Various pharmacology signals for vector DNA, type VII collagen (COL7) mRNA, or COL7 protein expression were detected throughout the data set in each patient for one or more assays up to 12 weeks post-administration (qPCR, electron microscopy or immunofluorescence). Anchoring fibrils have not been detected to date, whereas expressed COL7 mRNA and COL7 protein have been confirmed in multiple patient samples including one that detected linear expression of COL7 at the basement membrane zone.
“I am pleased with the interim data collected for the first three patients in the trial,” said Alfred Lane, MD, Chief Medical Advisor of Fibrocell and Professor of Dermatology and Pediatrics (Emeritus) at the Stanford University School of Medicine. “Safety is paramount in any new gene therapy candidate, and the detection of linear COL7 expression at the basement membrane zone is encouraging as it indicates the potential of FCX-007 to produce COL7 in the proper location of the skin structure. We believe increases in dosing and expression will enhance the consistency of effect as we continue clinical analysis and expand the treated patient population.”
The Data Safety Monitoring Board for the trial reviewed the interim data and concluded that safety and potential benefit were established, and allowed continuation of enrollment and dosing. With data from the first three patients meeting the primary trial objective of safety, the Company plans to increase expression and dosing FCX-007.
“FCX-007 to date has shown encouraging safety and positive early trends in pharmacology and wound healing with only a single injection session of cells,” stated John Maslowski, President and Chief Executive Officer of Fibrocell. “These interim results are a positive step towards our ultimate goal of bringing relief to patients and families suffering from this debilitating disease. In the coming months, we look forward to performing additional dosing and enhancing COL7 expression, and working with the FDA to further advance the program.”
Fibrocell will present on Wednesday, October 4 at the annual Partnering Forum, part of the Cell & Gene Meeting on the Mesa to be held October 4-6 in La Jolla, California. Webcast information for this presentation will be provided in a future press release.
Fibrocell is developing FCX-007 in collaboration with Intrexon Corporation (NYSE:XON), a leader in synthetic biology.
FCX-007 is Fibrocell's clinical-stage, gene therapy product candidate for the treatment of RDEB, a congenital and progressive orphan skin disease caused by the deficiency of the protein type VII collagen (COL7). FCX-007 is a genetically-modified autologous fibroblast that encodes the gene for COL7 and is being developed in collaboration with Intrexon Corporation. By genetically modifying autologous fibroblasts ex vivo to produce COL7, culturing them and then treating wounds locally via injection, FCX-007 offers the potential to address the underlying cause of the disease by providing high levels of COL7 directly to the affected areas while avoiding systemic distribution. FCX-007 has been granted Orphan Drug, Rare Pediatric Disease and Fast Track Designations by the U.S. Food and Drug Administration (FDA).
About the Phase 1/2 Clinical Trial
The primary objective of this open-label clinical trial is to evaluate the safety of FCX-007 in RDEB patients. Additionally, the trial will assess the pharmacology of FCX-007 through evaluation of COL7 expression and the presence of anchoring fibrils, as well as the efficacy of FCX-007 through evidence of wound healing. Assessments are performed at 4, 12, 25 and 52 weeks post-administration of FCX-007. Twelve patients are targeted to be treated with FCX-007 consisting of six adults in the Phase 1 portion of the trial and six patients in the Phase 2 portion of the trial. Prior to conducting clinical trials on pediatric patients in the Phase 2 portion of the trial, Fibrocell is required to obtain allowance from the FDA by submitting evidence of FCX-007 safety and benefit in adult patients and data from its completed pre-clinical toxicology study. To learn more about the FCX-007 Phase 1/2 clinical trial, please visit www.clinicaltrials.gov and search the identifier NCT02810951.
Fibrocell is an autologous cell and gene therapy company translating personalized biologics into medical breakthroughs for diseases affecting the skin and connective tissue. Fibrocell’s most advanced product candidate, FCX-007, is the subject of a Phase 1/2 clinical trial for the treatment of RDEB. Fibrocell is in pre-clinical development of FCX-013, its product candidate for the treatment of moderate to severe localized scleroderma. Fibrocell’s gene therapy portfolio is being developed in collaboration with Intrexon Corporation (NYSE: XON), a leader in synthetic biology. For more information, visit www.fibrocell.com or follow Fibrocell on Twitter at @Fibrocell.