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Clinical Trial Summary

T-DM1 , which is a highly innovative but also expensive antiHER2 agent consisting in the coupling of the humanised monoclonal antibody trastuzumab with a cytotoxic agent (maytansine derivate) has shown an encouraging antitumor activity evaluated by Recist criteria (35% objective response rate, 44% stable disease, 18% progressive disease) in patients with advanced HER2 positive Breast Cancer pretreated with several cytotoxic drugs, trastuzumab and lapatinib. Rationale I :For TDM1 to be active, the presence of an intact HER2 receptor is "key" since the internalization of the cytotoxic moiety depends on the binding of trastuzumab to the external domain of HER2. The zirconium 89 labelled trastuzumab PET/CT (or HER2 immunoPET/CT) is a non invasive test which shows promise in measuring HER2 expression (extracellular domain) for the entire disease burden and which could identify non responding patients prior to TDM1 administration. Rationale II: As for many such agents, it is desirable to identify early on (here with the use of FDG-PET/CT) which patients are unlikely to benefit from the therapy


Clinical Trial Description

The main objective of the trial is to prospectively evaluate the ability of a zirconium 89 labelled trastuzumab PET, to predict, before initiation of the treatment, treatment failure to a new targeted drug: T-DM1. At the same time, the early FDG-PET/CT, performed after 1 course of T-DM1, will also evaluated for its ability to predict non response to TDM1. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT01565200
Study type Interventional
Source Jules Bordet Institute
Contact
Status Active, not recruiting
Phase Phase 2
Start date May 2012
Completion date June 2024

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