ARRY-380 + Trastuzuamab for Breast w/ Brain Mets

ARRY-380 will be administered daily (either twice-daily along with concurrent administration of trastuzumab on Day 1. PK sampling of ARRY-380 is planned on Day 15. Blood samples will be collected at pre-dosing, 2 hours (± 1 hour), and 6 hours (± 2 hours). The same time points will be collected for BID and QD schedules. On the PK collection day participants should fast one hour before and one hour after taking ARRY-380.

ARRY-380 will be administered daily once-daily) along with concurrent administration of trastuzumab on Day 1. PK sampling of ARRY-380 is planned on Day 15. Blood samples will be collected at pre-dosing, 2 hours (± 1 hour), and 6 hours (± 2 hours). The same time points will be collected for BID and QD schedules. On the PK collection day participants should fast one hour before and one hour after taking ARRY-380.

6 mg/kg IV every 3 weeks