The Federation of Clinical Immunology Societies exists to improve human health through immunology by fostering interdisciplinary approaches to both understand and treat immune-based diseases. The Federation of Clinical Immunology Societies is a key forum where opinion leaders come together to chart the path to the next major breakthrough in disease therapy. Through FOCIS, researchers and clinicians share knowledge across traditional disease borders, and identify commonalities between treatments and therapies that are life-changing for those impacted by immune-mediated diseases.