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The Royal Marsden NHS Foundation Trust



‘Liquid biopsy’ blood test spots new breast cancer subtype

2 September 2016 | By Niamh Louise Marriott, Digital Content Producer

The blood test detects mutations to a gene called oestrogen receptor 1, or ESR1, which indicate that receptors for the female hormone oestrogen in the cancer cells, which are usually driven by the hormone, have evolved to stay permanently switched on without it – meaning hormonal treatments that block oestrogen…