A study conducted by researchers at the University of Cambridge and the Institute of Cancer Research in London has identified significant limitations in the National Institute for Health and Care Excellence (Nice) criteria used by general practitioners in England to identify women at elevated risk of breast cancer. The analysis, published in the British Journal of Cancer, indicates that the current guidelines fail to identify up to 95% of women under 50 who will subsequently develop breast cancer within a decade.
The researchers compared Nice’s existing referral criteria with a new risk assessment system called Boadicea, developed by Cambridge and funded by Cancer Research UK. The comparison revealed that Boadicea could identify eight times as many women in this age group who would go on to develop breast cancer. A primary reason for this disparity is that approximately 73% of women under 50 who develop breast cancer within 10 years have no family history of the disease—the key factor emphasized in the Nice guidelines. The Boadicea system incorporates additional variables including reproductive history, lifestyle factors, and genetic information.
Dr Juliet Usher-Smith from Cambridge emphasized the importance of improved early identification, stating that better risk detection would allow for earlier intervention when more treatment and prevention options are available. Prof Montserrat García-Closas of the Institute of Cancer Research acknowledged the complexity of implementation, noting a necessary balance between the relative simplicity of current criteria and the resource demands of comprehensive risk assessment including genetic testing.
Nice stated that while it welcomes the study’s findings and recognizes the potential of multifactorial risk models, the current evidence does not justify immediate changes to existing guidelines. The organization indicated it will continue monitoring new evidence for potential future updates. Breast Cancer Now, which supported the research, emphasized that any guideline changes must be accompanied by adequate investment in family history services to ensure equitable implementation across the National Health Service.
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