All the articles agree it is very advantageous to keep herceptin going once you have brain mets-they theorize the blood brain barrier is somewhat more permeable or some indirect effect is responsible
I also came by this (not mine) in the search function:
RTA 744 in Breast Cancer Patients With Progression of Previously Irradiated Brain Met
RTA 744 in Breast Cancer Patients With Progression of Previously Irradiated Brain Mets
RTA 744 is a novel, anthracycline that has shown the ability to circumvent ATP-binding cassette transporters (Multidrug Resistance Protein 1, Breast Cancer Resistance Protein, P-glycoprotein) in vitro. This action enables RTA 744 to penetrate across the blood brain barrier. In a Phase I safety study, RTA 744 was shown to be generally well tolerated in patients with recurrent gliolastoma multiforme (GBM). Additionally, anti-tumor activity was observed. Breast cancer is known to be sensitive to anthracycline therapy. Based on the preliminary Phase I clinical results and the sensitivity of breast cancer to anthracycline therapy, this Phase II study will investigate the safety and efficacy of RTA 744 in patients with breast cancer and metastatic disease to the brain which has progressed following whole brain irradiation.
http://www.clinicaltrials.gov/ct/sho...395112?order=2