Fi­deli­ty, Val­or pool $71.8M for Jeff Aron­in's plan to re­for­mu­late a gener­ic for but­ter­fly skin dis­ease at Cas­tle Creek Phar­ma

Jeff Aronin is back.

To be sure, Aronin didn’t ex­act­ly go away. The for­mer Marathon Phar­ma­ceu­ti­cals CEO mere­ly sold off a con­tro­ver­sial drug, shut­tered his em­bat­tled com­pa­ny, and ducked from the scan­dal (we’ll ex­plain). But he held on as chair­man and chief ex­ec­u­tive of Paragon Bio­sciences, which has con­tin­ued in­cu­bat­ing rare dis­ease ven­tures like Marathon.

For the first time since last May, though, Aronin is now ready to hus­tle an­oth­er re­pur­posed or­phan drug through the reg­u­la­to­ry process — with $71.8 mil­lion he just raised.

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