@beccabecca I think part of the problem is with ILC. My onc did give me stats at the time (can't remember them now) but he did tell me that it was "about". As I understand it, ILC hasn't been identified as a distinct type for that many years. Due to it's presentation, it's often found at a later stage than IDC and it accounts for about 5-15% of breast cancer diagnoses (depending on which source you read). This all means that it doesn't factor into the predictive tools particularly well and that the sample group is smaller. Of course, lower numbers of patients also means less research, although I did read on a US site that if taken as a distinct cancer, ILC would be the 6th most likely cancer to affect women.