Women are more likely to survive aggressive breast cancer if they have a certain type of "killer" immune cell near their tumour, a study has shown. Killer T-cells were shown destroy infected or damaged cells with toxic proteins, scientists said.
The chances of beating aggressive breast cancer were raised for women who had "killer" T-cells near their tumour, a study has found.
The killer T-cells destroy cancerous cells by blasting them with toxic proteins and patients found to have them were 10% more likely to live for five years or more than a breast cancer sufferer without them.
The association was seen in women with non-hormone sensitive breast cancer and cancers marked by especially active HER2 genes.
Lead researcher Dr Raza Ali, a lecturer at the Cancer Research UK Cambridge Institute, explained: "This important insight could help doctors personalise a woman's treatment based on her immunological profile and also suggests new treatments should harness the immune system to fight cancer."
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