UC San Francisco researchers have safely transplanted a woman’s stem cells into her growing fetus, leading to the live birth of an infant with a normally fatal fetal condition. The infant, who had been critically ill during the second-trimester of pregnancy due to alpha thalassemia, is the first patient enrolled in the world’s first clinical trial using blood stem cells transplanted prior to birth.
The infant was born at UCSF Medical Center at Mission Bay in February, four months after undergoing the transplant to treat the blood disorder, which is caused by a gene carried by nearly 5 percent of the world’s population.
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