South San Francisco-based Annexon Biosciences a biotechnology company, discovers and developing novel therapeutics for neurodegenerative and autoimmune disorders. Founded in 2011 by Arnon Rosenthal and Ben Barres, Annexon Biosciences is backed by investors that include Adage Capital Management, Bain Capital Life Sciences, Correlation Ventures, New Enterprise Associates, and Novartis Venture Fund.