Shares of Protalix Biotherapeutics Inc. (NYSE:PLX) fell 33% to $3.93 on April 28 after the company reported receiving an FDA complete response letter (CRL) in answer to its BLA for pegunigalsidase alfa, a galactosidase enzyme replacement therapy it has long advanced for the potential treatment of Fabry disease.

Amicus Therapeutics Inc.’s results from the phase III trial called Propel with AT-GAA (cipaglucosidase alfa and miglustat) for late-onset Pompe disease (LOPD) met with split opinions, though Wall Street took a decidedly dim view and left shares (NASDAQ:FOLD) to close at $12.57, down $6.16, or 33%.

CEO Eric Dube said Retrophin Inc. will “share more [about clinical development plans] once the deal has closed” in the fourth quarter of this year and Orphan Technologies Ltd. belongs to his firm, which has seen only animal data so far with OT-58, an enzyme replacement therapy (ERT) for classical homocystinuria (HCU).