Stunning therapy lands knock-out blow to cancer by training immune cells to seek and destroy deadly threats in trials

While it sounds like the stuff of science fiction, a cancer treatment in which a patient’s own cells are engineered to hunt down and wipe out their disease — and then linger in the body to stop the cancer returning — is helping to save patients’ lives.

The results of the treatment, known as CAR T-cell therapy, have been astonishing.

Patients who had exhausted all other options and been told they had just months to live have gone into remission. Others have even been cured by the one-off dose.

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