What should metastatic breast cancer patients know about emerging approaches to treatment and care? Dr. Julie Gralow reviews developments in metastatic breast cancer research, including advances in genetics, subsetting disease and personalized medicine.
Dr. Julie Gralow is the Jill Bennett Endowed Professor of Breast Medical Oncology at the University of Washington, Fred Hutchinson Cancer Research Center, and the Seattle Cancer Care Alliance. More about this expert here.
There have been so many advances in breast cancer research. What are you excited about in research right now?
Well, every single drug that’s been approved, every single new regimen that’s been approved in breast cancer is the direct result of clinical trials, and this is a major part of my career, is to help patients get access to clinical trials and run important clinical trials that could lead to new discoveries – is this regimen better? What’s the toxicity?
Because until we have a cure for breast cancer, we need to do better, and we need to research better treatment options. So, doing trials, having access to clinical trials where you can participate, help move the science forward is key.
I think where we’re moving with breast cancer is the more we’re understanding the patient and the tumor, the more we’re realizing every single breast cancer is different, actually, and whereas when I started my training 20-plus years ago, breast cancer was breast cancer – we weren’t even using HER2 yet, we were just learning how to use estrogen receptor, and we kind of treated everything the same – now, we’re subsetting, and subsetting, and subsetting. Even in triple negative breast cancer now, which is about 18-20% of breast cancer, we’re subsetting.
Does that triple negative breast cancer have PD-L1, which is associated with being able to get immunotherapy drugs? Does it express androgen receptor? Because sometimes, even a breast cancer that doesn’t have estrogen or progesterone receptor can express the androgen receptor, like prostate cancer, and we can use some prostate cancer drugs. So, even triple negative breast cancer we’re subsetting and subsetting, and could that triple negative breast cancer be associated with a BRCA1 or 2 mutation, and then we can use the PARP inhibitors?
So, I’m actually really excited about that we’re learning more and more, and subsetting, and not treating breast cancer as one size fits all, and if we can better tailor the treatments to the patient and the tumor, that we are going to get to the point where I can tell my patients yes, we can get cures in metastatic breast cancer.