Board of Directors,

Thomas J. Dee is Senior Vice President, Chief Financial Officer AveXis, Inc., a clinical-stage gene therapy company dedicated to developing and commercializing novel treatments for patients suffering from rare and life-threatening neurological genetic diseases.  Prior to joining AveXis, from October 2013 to July 2015, Mr. Dee was an independent business development consultant to early-stage companies. From 1990 to September 2013, Mr. Dee worked at Abbott Laboratories Inc., where he held a number of senior management positions, including vice president, international finance operations, vice president, controller pharmaceutical products, vice president, controller of Abbott International and vice president, internal audit. Mr. Dee also serves as a director or trustee of several educational institutes. Mr. Dee earned a B.A. from Northern Illinois University and an M.B.A. from the Kellogg School of Management at Northwestern University and is a Certified Public Accountant.