Aeterna Zentaris (NASDAQ: AEZS ) added 4.15% to $2.26 in the pre-market session. Aeterna Zentaris granted Special Protocol Assessment by the U.S. Food and Drug Administration for Phase 3 registration trial in endometrial cancer with AEZS-108. Arena Pharmaceuticals (NASDAQ: ARNA ) moved up 1.71% to $8.94 in the pre-market