Tag: world’s sickle-cell patients

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The theme of my second-annual Breakthroughs of the Year is the long road of progress. My top breakthrough is Casgevy, a gene-editing treatment for sickle-cell anemia. In the 1980s and early 1990s, scientists in Spain and Japan found strange, repeating patterns in the DNA of certain bacteria. Researchers eventually linked these sequences to an immune defense system that