FROM Psychiatric News Alert: In a phase II clinical trial, a new compound that targets the NMDA receptor was found to quickly and substantially reduce depression symptoms, with no severe side effects. At the highest dose tested, 72 percent of study participants displayed a clinically meaningful response to this compound, known as NRX-1074, within 24 hours, compared with 39 percent who responded to a placebo.
The findings are extremely encouraging, as current medications for depression can take up to six weeks to show effects, but there are still many hurdles to overcome in the development of this drug.
For one, this current clinical study employed an intravenous administration of NRX-1074, which would not be broadly applicable. However, with the dosage guidance gained from these results, Naurex, the makers of NRX-1074, are proceeding to a second phase II trial using an oral pill. The new study will also evaluate whether repeated daily doses provide a sustained effect, which is also critical if this compound can be a front-line treatment.
The concept of targeting NMDA receptors arose from studies showing that ketamine can rapidly improve depression symptoms, albeit with many risks. Several pharmaceutical companies have been working on compounds that can mimic the mood improvement without the negative side effects.
To learn more about research into ketamine and NMDA receptors for depression, see the recent Psychiatric News article “Researcher/Clinician Working to Unlock Ketamine’s Mysteries.”
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