Aimmune Therapeutics, a developer of treatments to protect children with food allergies, renewed its 11,665-square-foot lease and signed for an additional 26,355 square feet at 8000 Marina Blvd. in Brisbane, CA. The eight-story office building totals 201,861 square feet in the Sierra Point Towers building park. Diamond Investment Properties purchased the property in 2010, according to CoStar information. Aimmune Therapeutics will maintain its space on the third floor and expand into the entire second floor. Todd Graves of CBRE represented the tenant. Craig Kalinowski of Newmark Cornish & Carey represented the landlord