Gene Therapy Stocks Take Beating On Bad News For Celladon By: Benzinga via Benzinga April 27, 2015 at 13:49 PM EDT Biotech stocks took a beating Monday after Celladon Corp (NASDAQ: CLDN) said its heart failure drug Mydicar is a bust. Celladon ... Read More >> Related Stocks: Sangamo Therapeutics Spark Therap