My 49 year old sister has stage 4 metastatic breast cancer, HER positive. She was diagnosed a little over a year ago. She has been on 5 different chemo regiments, including the Herceptin and most recently the newly approved TDM1 trial chemo. Her cancer did not respond to any of these treatments, and has thickened in her liver and recently spread to her chest wall and hip. She also had radiation in the right breast area. She is not doing well at all. She has 6 children, ages 8 to 20. Could this celldex help her