Existing backers AstraZeneca and Johnson & Johnson returned for a round that will advance PhaseBio's orphan disease drug pipeline.

US-based orphan disease drug developer PhaseBio closed a $34m series D round on Wednesday that included pharmaceutical firms AstraZeneca and Johnson & Johnson.

Cormorant Asset Management, Rock Springs Capital, Mountain Group Partners, New Enterprise Associates (NEA), Hatteras Venture Partners, Syno Capital and Fletcher Spaght Ventures also took part. Johnson & Johnson invested through Johnson & Johnson Innovation – JJDC.

PhaseBio is working on treatments for orphan diseases and in particular cardiopulmonary disorders that affect the lungs and heart that will…