BASEL, Switzerland & CAMBRIDGE, Mass.--(BUSINESS WIRE)--CRISPR Therapeutics, a biopharmaceutical company focused on developing transformative gene-based medicines for patients with serious diseases, today announced the appointment of Pablo J. Cagnoni, M.D., to its board of directors. The Company also named current board member, Tony Coles, M.D., as new Chairman of the Board. Dr. Coles succeeds Bradley Bolzon, M.D., Managing Director of Versant Ventures and Founding Chairman since 2013.