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Led by Dr. Donald Kohn and Katelyn Masiuk, the researchers engineered a “viral vector” that would turn on the FoxP3 gene only in regulatory T cells — and not in other types of cells.
Hussein El Kerdi during his 2016 procedure at UCLA. His father, Ali El Kerdi (with cell phone) looks on.
Headshot of Antoni Ribas in a lab coat
Evangelina Vaccaro received Dr. Kohn’s treatment for bubble baby disease in 2012.
Evangelina Vaccaro (far right), who received Dr. Kohn’s treatment for bubble baby disease in 2012, with her family before her first day of school.