CHOP researchers have shown that IgA acts as a “tuner” that regulates the number of microbes the body sees every day, restraining a systemic immune response.

A CHOP-led study has shown that a regulatory class of T cells descends from two different origins, one that relates to autoimmunity and one that relates to protective immunity.

Using a model developed at CHOP, researchers find high cost of treatment most likely to prevent premature death in patients with agammaglobulinemia undermines its benefits.

After stay-at-home orders were issued, doctors at CHOP noticed a drop in the number of patients who were admitted for asthma emergencies.

It's World PI Week! Join us in celebrating 10 years of collaboration, research and treatment for children with primary immunodeficiencies.

The $2.5 million in research grants will allow both hospitals to work together to investigate diseases that have not yet been discovered.

CHOP immunologist, patient and family appear on Megyn Kelly TODAY to discuss medical mystery and how it was solved.

The World Allergy Organization recognizes CHOP, Penn as leaders in the field of allergy education, research and training.

CHOP congratulates Kathleen E. Sullivan, MD, PhD, Chief of the Division of Allergy and Immunology, who received the 2017 Boyle Scientific Achievement Award earlier this year from the Immune Deficiency Foundation (IDF).