 SAN DIEGO, Nov. 02, 2020 GLOBE NEWSWIRE -- Exagen Inc. Nasdaq: XGN, an organization dedicated to transforming the care continuum for patients suffering from autoimmune diseases, announced today a new study in collaboration with Brigham and Womens Hospital in Boston, MA. The Brigham is acknowledged internationally for its expertise and innovation in patient care, biomedical research, and educational training programs for physicians, scientists, and health care professionals. 