As I've noted before, AHF is an extremely heterogeneous disease. See, for example, this paper.. Some patients have low blood pressure, some high. Some have low cardiac index, some normal, ... . Even dyspnia isn't universal. So it is unlikely that any drug will treat anywhere near all patients. And it is almost certain that TRVN knows this (in their R&D Day slides they referenced getting the right phenotype as important), and given their recent trial size expansion I think they know this will take some data mining.
So... I'd be very surprised if they had more than a few positive subgroups coming out of this ph2. How the market will treat that is, I'd suggest, a function of the current biotech market psych.
Note that, FWIW, I think TRVN did a very good job in their recent R&D Day presentation (I'll write up some notes later), but the path forward for TRV027 will, IMO, likely be slow (e.g. they'll need a confirmatory trial or two to check the subgroups found in the first phase 2) and risky because of the heterogeneous nature of AHF.
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