If you read the article you'd realize that it doesn't talk about modifying the patients DNA to cure the cancer, the are just editing T cells so they will attack the cancer. Metabolic therapy seems promising, but I don't think it will ever be as effective as other forms of therapy that we will come up with.
>The treatment Wu is testing involves taking a sample of blood from each patient. A lab at a biotech company two hours away by bullet train extracts T cells from the blood. Scientists then use CRISPR to knock out a gene in the T cells known as PD-1. This engineering feat modifies the T cells so that they zero in on and attack the cancer cells, once they're infused back into each patient.
>The treatment Wu is testing involves taking a sample of blood from each patient. A lab at a biotech company two hours away by bullet train extracts T cells from the blood. Scientists then use CRISPR to knock out a gene in the T cells known as PD-1. This engineering feat modifies the T cells so that they zero in on and attack the cancer cells, once they're infused back into each patient.