In fact, when I participated in the co‑discovery of the BRCA1 gene and, more importantly, the BRCA2 gene, it looked like it was futuristic to test women for predispositions. We know that millions of women have been tested, and that has probably saved hundreds of thousands of lives.
I think we have to rely on the evidence and the best science possible. Right now, the best science gives us an opportunity to look at all the risk factors. Breast density is one of the significant risk factors, but sometimes when you combine that risk with other risk factors, you can see that there can be a mitigation of risk.
I would also like to mention a fact that we haven't discussed much, but that Dr. Wilkinson mentioned earlier: We must not forget that the natural history of breast cancer differs according to ethnic groups. Among women of African or Asian descent, we know that breast cancer will appear almost 10 years earlier than among European women, hence the interest or relevance of always taking women's ethnic origin into account and providing them with appropriate screening.