A second phase II failure to differentiate from placebo in a test of benefits for people with depression has put AV-101, an NMDA receptor antagonist developed by Vistagen Therapeutics Inc., in uncertain territory.
Word from the FDA to Axsome Therapeutics Inc. about the effort with oral N-methyl-D-aspartate (NMDA) receptor antagonist AXS-05 in depression – and the company's accelerated push with the compound – had Wall Street watching the NMDA space with even more interest than usual.