It is important to understand that what is inherited is the risk, the susceptibility to suffer a certain type of cancer. In other words, not all people who have inherited one of these mutations will develop the disease, but the probability that they will end up suffering from cancer will be greater than the probability of the general population. Only some people with a genetic mutation will develop cancer. If the test result is negative, there is no proven genetic risk of developing cancer. However, this does not mean that you cannot develop cancer during your lifetime. In other words, a woman can have a 45% to 65% chance of developing breast cancer and never develop the disease. While a woman with a 25% chance can develop breast cancer.