Gene editing helped a desperately ill baby thrive. Scientists say it could someday treat millions
Associated Press
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This photo provided by the Children's Hospital of Philadelphia shows KJ Muldoon after a follow up dose of an experimental gene editing treatment at the hospital in April 2025. (Chloe Dawson/Children's Hospital of Philadelphia via AP)In this photo provided by the Children's Hospital of Philadelphia, KJ Muldoon, center, sits with his siblings after a follow up dose of an experimental gene editing treatment at the hospital in April 2025. (Chloe Dawson/Children's Hospital of Philadelphia via AP)In this photo provided by the Children's Hospital of Philadelphia, Drs. Kiran Musunuru, left, and Rebecca Ahrens-Nicklas stand with KJ Muldoon, center, after a follow up dose of an experimental gene editing treatment at the hospital in April 2025. (Chloe Dawson/Children's Hospital of Philadelphia via AP)In this photo provided by the Children's Hospital of Philadelphia, KJ Muldoon sits with his parents, Kyle and Nicole Muldoon, and his siblings after a follow up dose of an experimental gene editing treatment at the hospital in April 2025. (Chloe Dawson/Children's Hospital of Philadelphia via AP)
CHLOE DAWSON PHOTOGRAPHY
This photo provided by the Children's Hospital of Philadelphia shows KJ Muldoon after a follow up dose of an experimental gene editing treatment at the hospital in April 2025. (Chloe Dawson/Children's Hospital of Philadelphia via AP)