27 de 28 pacientes pararam de ter crises de dor. A edição genética chegou à falciforme

Sickle cell disease is a problem in the blood. The red blood cells change shape. They look like a small moon, not a ball. So they get stuck inside the small veins. And the person feels very strong pain for days.

Now doctors try something new. They take blood cells from the patient. Then they change one tiny part of the DNA. The cells go back into the same person. And the body starts to make better blood cells.

The study has twenty-eight sick people. Twenty-seven of them stop having pain crises. Some of them stay two years without one. Because the cells come from the patient, the body does not fight them. This disease is very common in Brazil. So this news matters a lot here.