Proteostasis Therapeutics, Inc. announced the appointment of Geoffrey S. Gilmartin, M.D., M.M.Sc., as its Chief Medical Officer (CMO), and Andrey E. Belous, M.D., Ph.D., as a Senior Medical Director, effective August 5, 2019. Dr. Gilmartin served most recently as Chief Medical Affairs Officer of the Company. Dr. Belous joins the Company from Galapagos NV where he most recently served as a Medical Director for the company's Phase 3 program in Idiopathic Pulmonary Fibrosis (IPF). Po-Shun Lee, M.D., after a successful 4-year tenure as Chief Medical Officer, will transition out of his current role and will serve as a consultant for the Company.