MONROVIA, Calif.--(BUSINESS WIRE)--Xencor, Inc., a protein and antibody therapeutics development company, today announced a collaboration with Boehringer Ingelheim to optimize therapeutic monoclonal antibodies with improved clinical performance. Boehringer Ingelheim will apply Xencor’s proprietary XmAb™ technology platform, including proprietary Fc domains, to maximize the efficacy of Boehringer Ingelheim’s antibody drug candidates against selected targets of interest. Xencor’s XmAb™ Fc domains are designed to enhance the therapeutic properties of antibodies including sustained half-life, increased structural stability and greater potency.