AMAG Pharmaceuticals has entered into a definitive agreement to acquire Perosphere Pharmaceuticals Inc.    Through the acquisition, AMAG will acquire global rights to ciraparantag, a next generation anticoagulant reversal agent, further enhancing its development pipeline and leveraging AMAG’s expertise in hematology. Ciraparantag is being investigated for patients treated with novel oral anticoagulants (NOACs) or low molecular weight heparin (LMWH) when reversal of the anticoagulant effe...