Conditions: Brain Cancer
Keywords: Brain Metastasis human epidermal receptor (HER)
Allocation: NA | Intervention model: SINGLE_GROUP
Enrollment: 4
Healthy volunteers: no

Brief summary:
The purpose of this study is to determine the disease response, survival, and side effects of an experimental drug called dacomitinib in progressive brain metastases.

Detailed description:
The purpose of this study is to investigate the use of the irreversible pan-ErB kinase inhibitor dacomitinib in the treatment of brain metastases, as measured by radiographic objective response rate.

The rationale of this study is three-fold. First, the use of dacomitinib, an irreversible pan-ErB kinase inhibitor, is to improve the duration of response seen by reversible, EGFR only inhibitors. Inhibition of the multiple ErB kinases may interfere with receptor cross-talk as a method of developing resistance; indeed, patients who have failed erlotinib treatment for systemic disease have seen responses to dacomitinib. The second rationale is to evaluate the pharmacokinetics of the penetration of dacomitinib into the CSF to determine if adequate drug levels reach the CNS, and determine if the current dosing regimen is appropriate. The third rationale is to determine if specific molecular phenotypes preferentially respond to dacomitinib. As part of this study, serum and cerebrospinal fluid will be collected and analyzed both for drug levels and for molecular markers to key elements of the ErB signaling cascade. The objective of the marker analysis to identify a distinct molecular phenotype that may preferentially respond to targeted drug therapy in the future.

Arms:
arm 1: Dacomitinib 45 mg will be administered orally daily. Treatment cycles will consist of 28 days.

Interventions: intervention 1: Dacomitinib
Intervention descriptions: intervention 1: Dacomitinib 45 mg will be administered orally daily. Treatment cycles will consist of 28 days.

Protocol document: