Then, months later, doctors delivered gene therapy directly to her brain.
Now the 4-year-old is walking, running, swimming, reading and riding horses — “just doing so many amazing things that doctors once said were impossible,” said her mother, Judy Wei.
Rylae-Ann, who lives with her family in Bangkok, was among the first to benefit from a new way of delivering gene therapy — attacking diseases inside the brain — that experts believe holds great promise for treating a host of brain disorders.
Her treatment recently became the first brain-delivered gene therapy after its approval in Europe and the United Kingdom for AADC deficiency, a disorder that interferes with the way cells in the nervous system communicate. New Jersey drugmaker PTC Therapeutics plans to seek U.S. approval this year.
Meanwhile, about 30 U.S. studies testing gene therapy to the brain for various disorders are ongoing, according to the National Institutes of Health. One, led by Dr. Krystof Bankiewicz at Ohio State University, also targets AADC deficiency. Others test treatments for disorders such as Alzheimer’s, Parkinson’s and Huntington’s.
Challenges remain, especially with diseases caused by more than a single gene. But scientists say the evidence supporting this approach is mounting — opening a new frontier in the fight against disorders afflicting our most complex and mysterious organ.
“There’s a lot of exciting times ahead of us,” said Bankiewicz, a neurosurgeon. “We’re seeing some breakthroughs.”
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