This article highlights a couple of things. Firstly wat Big pharma can spend on aquisitions and secondly, the cost of failure.Rapastinel, the depression drug that Allergan picked up in its $560 million acquisition of Naurex, missed its primary endpoint in a trio of pivotal trials. What’s more, an interim analysis from a fourth study “suggests the primary and key secondary endpoints will not be met.”
Allergan was testing the NMDA receptor modulator as an adjunct therapy in patients with major depressive disorder (MDD). In all, the three phase 3 studies enrolled 1,510 patients with MDD who had a partial response to antidepressant therapy. In two of the trials, patients received weekly injections of placebo or rapastinel on top of their oral antidepressants, the company said in a statement Wednesday afternoon. The third study was similar in design, except that it also evaluated a second, lower dose of rapastinel. The drug was well tolerated in all three of the studies but failed to differentiate from placebo on the primary and key secondary endpoints.
"We are deeply disappointed with these results, and they are a vivid reminder that drug development is extremely challenging, especially in mental health,” said David Nicholson, Allergan’s R&D chief, in the statement.
While these data are grim, the drug isn’t quite dead in the water.
Allergan is also testing it as a monotherapy for MDD. It is in a phase 3 trial for MDD patients and a phase 2 study in patients with MDD who are at imminent risk of suicide. The Big Pharma will look into how these data might affect its other rapastinel programs and make a decision “over the course of 2019,” Nicholson said.Allergan’s stock dipped about 5% in after-hours trading.
The company forked over $560 million up front to acquire Naurex back in 2015, picking up a pair of NMDA receptor modulators, rapastinel and NRX-1074, also called apimostinel, that would “strengthen Allergan’s long-term growth profile.”
There you go folks. Maybe half a billion dollars for the potential was par for the course back then. Sometimes the simplicity ofa product is a winner in itself.
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