Understanding primary immunodeficiency (PI)
Understanding PI
The more you understand about primary immunodeficiency (PI), the better you can live with the disease or support others in your life with PI. Learn more about PI, including the various diagnoses and treatment options.
Learn more about PI
Living with PI
Living with PI
Living with primary immunodeficiency (PI) can be challenging, but you’re not alone—many people with PI lead full and active lives. With the right support and resources, you can, too.
Learn more about living with PI
Get involved
Get involved
Be a hero for those with PI. Change lives by promoting primary immunodeficiency (PI) awareness and taking action in your community through advocacy, donating, volunteering, or fundraising.
Get involved today
Advancing research and clinical care
Advancing research and clinical care
Whether you’re a clinician, researcher, or an individual with primary immunodeficiency (PI), IDF has resources to help you advance the field. Get details on surveys, grants, and clinical trials.
View resource details

Lunch & Learn: Understanding genetic variants in APDS

June 10, 2025

Immune Deficiency Foundation · Lunch & Learn: Understanding genetic variants in APDS

Dr. Jolan Walter (University of South Florida, Johns Hopkins All Children's Hospital) provides a presentation on genetic variants in APDS (activated PI3K delta syndrome).

View a PDF of this presentation

Your support of the Immune Deficiency Foundation helps make programming like this free to everyone who needs it. To donate, volunteer, or learn more, visit www.primaryimmune.org.

The information, terminology, and opinions presented in this forum do not necessarily reflect the views of IDF, its Board of Trustees, sponsors, or donors.

Topics

Understanding PI

Diagnosis

Activated PI3K delta syndrome (APDS)

This page contains general medical and/or legal information that cannot be applied safely to any individual case. Medical and/or legal knowledge and practice can change rapidly. Therefore, this page should not be used as a substitute for professional medical and/or legal advice. Additionally, links to other resources and websites are shared for informational purposes only and should not be considered an endorsement by the Immune Deficiency Foundation.