Smart drug that strips cancer cells of ‘invisibility cloak’ can shrink tumours by 30%, trial shows

Immunotherapy struggles when tumours hide from the immune system. GRWD5769 solves this problem by making cancer cells (pink) visible to T-cells (white). Illustration: Nemes Laszlo/Alamy

A smart drug that stops cancer cells “hiding” from treatment can shrink tumours by at least 30% in six of the world’s most common forms of the disease, early trial results show.

While immunotherapy treatments have improved survival rates for many patients, their effectiveness can stall or fail when tumour cells hide and then spread.