Top Regulatory News Stories – Week Ending April 20, 2018

Rigel Pharmaceuticals announced that the FDA approved TAVALISSE™ (fostamatinib disodium hexahydrate) for the treatment of thrombocytopenia in adult patients with chronic immune thrombocytopenia who have had an insufficient response to a previous treatment.  https://www.prnewswire.com/news-releases/rigel-announces-fda-approval-of-tavalisse-fostamatinib-disodium-hexahydrate-for-chronic-immune-thrombocytopenia-itp-in-adult-patients-300631702.html Ultragenyx and Kyowa Kirin announced FDA approval of Crysvita® (burosumab-twza) for the treatment of children and adults with X–Linked Hypophosphatemia  http://ir.ultragenyx.com/news-releases/news-release-details/ultragenyx-and-kyowa-kirin-announce-fda-approval-crysvitar[…]