Doi T, Takiuchi H, Ohtsu A, Fuse N, Goto M, Yoshida M, Dote N, Kuze Y, Jinno F, Fujimoto M, Takubo T, Nakayama N, Tsutsumi R. Phase I first-in-human study of TAK-285, a novel investigational dual HER2/EGFR inhibitor, in cancer patients.
Br J Cancer 2012;
106:666-72. [PMID:
22240796 PMCID:
PMC3322948 DOI:
10.1038/bjc.2011.590]
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Abstract
BACKGROUND
This phase I first-in-human study was conducted in Japanese patients to investigate the safety, pharmacokinetics (PKs), and determine the maximum tolerated dose (MTD) of oral TAK-285, a novel dual erbB protein kinase inhibitor that specifically targets human epidermal growth factor receptor (EGFR) and HER2.
METHODS
The TAK-285 dose was escalated until MTD was determined. A second patient cohort received TAK-285 at the MTD for at least 4 weeks.
RESULTS
In all, 26 patients received TAK-285 at doses ranging from 50 to 400 mg once daily (q.d.) or twice daily (b.i.d.); 20 patients made up the dose escalation cohort and the remaining 6 patients were the repeated administration cohort. TAK-285 was well tolerated. Dose-limiting toxicities noted in two patients who received 400 mg b.i.d. were grade 3 increases in aminotransferases and grade 3 decreased appetite. Consequently, the MTD was determined to be 300 mg b.i.d. Absorption of TAK-285 was rapid after oral dosing, and plasma exposure at steady-state increased in a dose-proportional fashion for doses ranging from 50 to 300 mg b.i.d. A partial response was observed for one patient with parotid cancer who received 300 mg b.i.d.
CONCLUSION
The toxicity profile and PK properties of oral TAK-285 warrant further evaluation.
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