HER2 positive, and predictors

Hi to those at San Antonio in our behalf!

I am wondering again if there is any information from the discussions about HER2 in regard to the use of HER2 by oncologists when deciding what treatment is appropriate? For women who are dx'd HER2 positive initially and who try to use the online predictors the predictors don't include HER2 as a factor but oncs do. Is there any reason why the 1/3 of women diagnosed with bc who end up HER2+ can't have better online predictors?

Thanks - AlaskaAngel