Shots:AbbVie has signed a definitive agreement to acquire Gilgamesh Pharmaceuticals’ Bretisilocin for moderate-to-severe major depressive disorder (MDD), currently in clinical developmentAs per the deal, AbbVie will acquire Gilgamesh’s bretisilocin program for ~$1.2B, including upfront and milestone payments. Gilgamesh will spin off Gilgamesh Pharma Inc. to retain its team and other programs, including blixeprodil…