John P. Butler has been appointed president and chief executive officer Akebia Therapeutics. Mr. Butler succeeds Joseph Gardner, Ph.D., who will remain as an advisor for the company. In addition to this appointment, Akebia will establish a corporate office in the Boston area, while its R&D office and activities will remain in Cincinnati.   Mr. Butler was most recently served as chief executive officer of Inspiration Biopharmaceuticals. Prior to that, he held several positions at Genzyme Corp...