This document summarizes key information about lupus nephritis (LN) from a lecture given by Dr. Hussein Sheashaa. It begins with an outline of topics to be covered, including histopathology/biopsy, predictors of outcome, treatment approaches, and special situations. Regarding biopsy findings, it indicates that class IV LN is most common and describes revised classification guidelines. Treatment principles focus on early, aggressive therapy to achieve remission and prevent flares/progression. Standard induction therapies are discussed as well as new options like voclosporin. Maintenance strategies and treatment algorithms are presented. Predictors of poor outcome and management of special cases like pregnancy and refractory LN are also summarized.