Abstract
Purpose
This phase I trial evaluated the safety, pharmacokinetic profile, and antitumor activity of investigational oral TORC1/2 inhibitor TAK-228 plus paclitaxel, with/without trastuzumab, in patients with advanced solid malignancies.
Methods
Sixty-seven patients received TAK-228 6–40 mg via three dosing schedules; once daily for 3 days (QDx3d QW) or 5 days per week (QDx5d QW), and once weekly (QW) plus paclitaxel 80 mg/m2 (dose-escalation phase, n = 47) and with/without trastuzumab 2 mg/kg (expansion phase, n = 20). Doses were escalated using a modified 3 + 3 design, based upon dose-limiting toxicities in cycle 1.
Results
TAK-228 pharmacokinetics exhibited dose-dependent increase in exposure when dosed with paclitaxel and no apparent differences when administered with or 24 h after paclitaxel. Dose-limiting toxicities were dehydration, diarrhea, stomatitis, fatigue, rash, thrombocytopenia, neutropenia, leukopenia, and nausea. The maximum tolerated dose of TAK-228 was determined as 10-mg QDx3d QW; the expansion phase proceeded with 8-mg QDx3d QW. Overall, the most common grade ≥3 drug-related toxicities were neutropenia (21%), diarrhea (12%), and hyperglycemia (12%). Of 54 response-evaluable patients, eight achieved partial response and six had stable disease lasting ≥6 months.
Conclusion
TAK-228 demonstrated a safety profile consistent with other TORC inhibitors and promising preliminary antitumor activity in a range of tumor types; no meaningful difference was noted in the pharmacokinetics of TAK-228 when administered with or 24 h after paclitaxel. These findings support further investigation of TAK-228 in combination with other agents including paclitaxel, with/without trastuzumab, in patients with advanced solid tumors.
Clinicaltrials.gov identifier
NCT01351350.
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Acknowledgements
The authors would like to thank all the study participants and their families, as well as the investigators and site staff involved in the study. The authors also acknowledge Ana Limon of Millennium Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, who contributed to the editorial and scientific content of the manuscript. The authors would also like to acknowledge the writing support of Dawn L. Lee of FireKite, an Ashfield company, part of UDG Healthcare plc, in the development of this manuscript, which was funded by Millennium Pharmaceuticals, Inc., and complied with Good Publication Practice 3 guidelines (Battisti et al., Ann Intern Med 2015;163:461–4).
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Funding
This study was funded by Millennium Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited.
Conflict of interest
HA Burris, S Pant, PB Murphy, and SF Jones disclose no potential conflicts of interest. CD Kurkjian participated in an advisory board meeting for Halozyme Therapeutics Inc. (consultant/advisory role). L Hart discloses research funding to institution from Millennium Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited. JR Infante discloses participation in a consultant/advisory role for Takeda on behalf of institution. R Neuwirth, CG Patel, and F Zohren are employees of Millennium Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited. CG Patel and F Zohren also disclose stock ownership (Millennium Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited).
Ethical approval and informed consent
The study was approved by the institutional review board at each site and conducted per the Declaration of Helsinki, the International Conference on Harmonisation, and Good Clinical Practice guidelines. All patients provided written informed consent.
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Burris, H.A., Kurkjian, C.D., Hart, L. et al. TAK-228 (formerly MLN0128), an investigational dual TORC1/2 inhibitor plus paclitaxel, with/without trastuzumab, in patients with advanced solid malignancies. Cancer Chemother Pharmacol 80, 261–273 (2017). https://doi.org/10.1007/s00280-017-3343-4
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DOI: https://doi.org/10.1007/s00280-017-3343-4