Shares of Krystal Biotech Inc. KRYS fell 9.5% in premarket trading on Monday after the company said the Food and Drug Administration moved back the decision date for its experimental treatment for a rare skin condition. The new PDUFA date for the dystrophic epidermolysis bullosa treatment candidate is May 19. The company had made a change to the hardware in the manufacturing process. “While we are disappointed that this change was viewed as a major amendment, we are committed to working with the FDA as it completes its review of the B-VEC application,” Krystal Biotech CEO Krish Krishnan said in a news release. Krystal’s stock is down 29.0% for the past year, while the S&P 500 SPX has declined 17.0%.
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