“The gene-editing treatment aims to permanently lower cholesterol by using Crispr to edit a gene in the liver. Researchers gave a single infusion, in varying doses, to the patients whose average age was 54. While the lower doses didn’t have much of an effect, the highest dose reduced LDL cholesterol by 55 percent in the single patient who received it. Meanwhile, two patients who got the next-highest dose saw reductions of 39 percent and 48 percent.”
From Ars Technica.