aDana-Farber/Partners CancerCare, Boston, MA, USA
bExelixis Inc., South San Francisco, CA, USA
cDepartment of Biostatistics and Bioinformatics, Duke University, Durham, NC, USA
dAlliance Statistics and Data Center, Duke University, Durham, NC, USA
eMassachusetts General Hospital Cancer Center, Boston, MA, USA
fAlliance Protocol Operations Office, Chicago, IL, USA
gThe Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
hSiteman Cancer Center, Washington University School of Medicine, St. Louis, MO, USA
iUCSF Helen Diller Family Comprehensive Cancer Center, San Francisco, CA, USA
jUniversity of Kansas – Wichita, Wichita, KS, USA
kMemorial Sloan Kettering Cancer Center, New York, NY, USA
lDuke Cancer Institute, Duke University Medical Center, Durham, NC, USA
*Corresponding author: Dana Farber Cancer Institute, 450 Brookline Avenue, DANA 1230, Boston, MA 02215, USA. Fax: +1 617 632 2165., toni_choueiri@dfci.harvard.edu (T.K. Choueiri).