203 Insights into lupus biology from inborn errors of immunity: immunopathogenesis of STAT1 gain-of- function autoimmunity by David J Rawlings, Troy Torgerson, Quan-Zhen Li, Shaun W Jackson, Largent Andrea, Kathi Lambert, Chiang Kristy, Shumlak Natali, Kelly Hudkins, Denny Liggitt, Mohammed Oukka, Jane Buckner, Eric Allenspach