Your immune system is unlike anyone else's. That's what makes understanding it so hard—and so important.

Every immune system is unique, shaped by age, genetics, and a lifetime of experience. Researchers studying autoimmune disease, cancer, or infection need to understand what normal looks like in order to make sense of what's changed, but that baseline has been frustratingly out of reach.

Our Immunology program combined years of longitudinal data, multiple data types, and profiles from hundreds of participants to build a rich, open reference for the healthy human immune system across the lifespan. In the process, we discovered that some diseases are molecularly active years before a diagnosis is possible: a finding that could change how medicine approaches prevention.