From: Evaluation of the current knowledge limitations in breast cancer research: a gap analysis
What do we know? | Endocrine chemoprevention for oestrogen-responsive tumours works. |
 | Key risk factors include mammographic density, post-menopausal weight gain, high-calorie, high-fat diets and lack of exercise. |
 | Breast screening is effective. MRI screening is more sensitive than mammography for high-risk women |
 | Epidemiological data suggest weight control, low-fat diet and exercise after diagnosis improves outcome of early breast cancer patients. |
What are the gaps? | The long-term effects of chemoprevention of ER positive cancers are unknown. |
 | Prevention of ER-negative cancers remains a challenge. |
 | There is a need to understand the target cell for breast cancer prevention. |
 | Need to improve current risk prediction models by including modifiable risk factors. |
 | The health beliefs of high-risk and population risk women require exploration. |
 | The effects of breast screening out with currently targeted groups is not known. |
 | To define deliverable diet and exercise interventions for the primary and secondary prevention of breast cancer. |
 | To elucidate the mechanism for breast cancer prevention with energy restriction. |
Problems | Accrual and retention of women in prevention trials. |
 | Better models to research new chemoprevention agents. |
 | Breast screening lags behind advances in imaging technology. |
 | Poor uptake to diet and exercise trials after diagnosis. |
Translational implications | Better identification of high-risk women would allow chemoprevention to be targeted more effectively. |
 | Defining optimum screening methods will ensure more effective use of limited NHS resources. |
 | The development of energy-restriction mimetics for breast cancer prevention. |
 | Optimal diet and exercise interventions could improve quality of life and outcome for women with breast cancer. |
Recommendations | Improve breast cancer risk prediction models. |
 | Encourage transdisciplinary input to prevention trials (for example, geneticists, epidemiologists, nutritionists, psychologists and clinicians) to study the psychosocial, compliance and genetic aspects of prevention. |
 | Establish the potential benefits of diet and exercise post-diagnosis on outcome and quality of life for breast cancer patients. |