Cancer-killing virus shows promise in patients

One patient's cancer vanished, while others saw their tumours shrink. 

The drug is a weakened form of the cold sore virus - herpes simplex - that has been modified to kill tumours, Qazet.az reports.

Larger and longer studies will be needed, but experts say the injection might ultimately offer a lifeline to more people with advanced cancers.

Krzysztof Wojkowski, a 39-year-old builder from west London, is one of the patients who took part in the ongoing phase one safety trial, run by the Institute of Cancer Research and the Royal Marsden NHS Foundation Trust.