Those who wish to form start-ups in wound healing will have a lot of explaining to do to potential investors. The sector has pretty much come to be viewed as a financial sinkhole; decades of research have produced no stunning successes and a lot of notable failures. Companies with tissue-engineered skin substitutes have found the field challenging; both Organogenesis Inc. and Advanced Tissue Sciences Inc., after more than a decade in development, did reach the market with cell-based grafts for chronic wounds, but ended up filing for bankruptcy. (Advanced Tissue Sciences is now in liquidation, but Organogenesis is just emerging from Chapter 11.) Ortec International Inc. , which is awaiting PMA approval for its cell-based skin substitute for use in venous stasis ulcers, has spent more than $100 million since its inception in 1991 to get to this point.
Growth factors have been equally problematic. Human Genome Sciences Inc. , targeting chronic venous ulcers with keratinocyte growth factor-2 (Repifermin) last year dropped development of the product for lack...
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