Alexandria Real Estate Equities, Inc. (NYSE: ARE), an urban office REIT uniquely focused on collaborative life science and technology campuses in AAA innovation cluster locations, today announced that it has kicked off the development of a 175,000 RSF Class A property on its flagship Maryland campus, the Alexandria Life Science and Translational Research Center at 9800 Medical Center Drive, with the signing of a long-term lease with REGENXBIO Inc. (NASDAQ: RGNX), a leading clinical-stage biotechnology company seeking to improve lives through the curative potential of gene therapy. As the anchor tenant of the new sustainable office/laboratory development, REGENXBIO has executed a 15-year, 132,000 RSF lease with expansion options for its future HQ and R&D building. This strategic lease enables REGENXBIO to expand and consolidate multiple nearby sites at one campus location in the heart of the Shady Grove Life Sciences Center in Rockville, Maryland. The ground-up development project targeting LEED certification is fully entitled and is expected to be placed into service in 2020.