Randomized phase II study of lapatinib plus capecitabine or lapatinib plus topotecan for patients with HER2-positive breast cancer brain metastases.

Lin NU, Eierman W, Greil R, Campone M, Kaufman B, Steplewski K, Lane SR, Zembryki D, Rubin SD, Winer EP.

http://www.ncbi.nlm.nih.gov/pubmed/21706359