German biotech firm Ethris GmbH has added three new members to the Ethris board of directors: Leon Chen, venture partner with OrbiMed, Thomas Chalberg, COO of Oncorus, and Justin Duckworth, managing partner with HS Life Sciences.

Prior to joining OrbiMed, Chen co-founded KAI Pharmaceuticals, where he was responsible for research, intellectual property and business development before Amgen acquired KAI in 2012.