treatment options available to them. claire, from hampshire, had car—t therapy two years ago after standard leukaemia treatment failed. as long as everything goes ok, the biopsies become less frequent. she's still in remission. i don't think i'd be here if i hadn't had car—t. i was very, very lucky that the trial was there at the time. so if the car—t option hadn't been available i would have had probably a finite amount of time left. in years to come, car—t may be able to treat tumours in the brain, prostate and liver, giving more cancer patients like claire and phil a brighterfuture. fergus walsh, bbc news. the very latest progress there in cancer research.