Biotechnology Shares of US biotech Denali Therapeutics closed down more than 15% at $54.14 yesterday, after it announced additional interim data from a Phase I/II study evaluating ETV:IDS (DNL310), an investigational brain-penetrant enzyme replacement therapy intended to treat both central nervous system (CNS) and peripheral manifestations of Hunter syndrome (MPS II) that, while billed as positive, disappointed investors. 27 July 2021