Japanese scientists eliminate Down syndrome extra chromosome in lab breakthrough

Down syndrome affects approximately 1 in 700 births worldwide; this research could eventually impact treatment options for individuals with trisomy 21.

In a Japanese laboratory, scientists have crossed a threshold long considered out of reach: using CRISPR-Cas9 gene editing to remove the extra chromosome 21 that defines Down syndrome from human cells grown in a dish. The work, led by researchers at Mie and Fujita Health Universities, does not promise a cure, but it demonstrates that the chromosomal imbalance can be corrected and that gene expression can shift closer to typical patterns — a quiet but consequential expansion of what science believes is possible. For the roughly one in 700 people born each year with trisomy 21, this moment belon

Japanese scientists eliminate Down syndrome extra chromosome in lab breakthrough

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