BB Healthcare Trust PLC (LON:BBH) says Dr Daniel Koller is stepping down from his role as part of the management advisory team.
Bellevue Asset Management, which manages the trust, said Koller will focus his attention on BB Biotech, a German sister fund also run by the investment group.
BB Healthcare will continue to be advised by the existing team of Paul Major and Brett Darke, who are based in London.
It was always expected that Dr Koller would step back as the trust evolved, said BB Healthcare.