This therapy is so new no one has had it long enough to know if it will be a complete cure, but many people involved think it may be.

CRISPR gene-editing was discovered in 2012, but its application in medicine has only taken off in more recent years. There are problems to overcome, particularly around unintended consequences from imprecise targeting of genes. That said, the list of genetic diseases and predispositions to diseases is long, so there is a great deal of potential with this biotech.