Summary
Background. Preclinical studies have shown that the combined inhibition of EGFR and NF-kB pathways to target the RalB/TBK1 pathway led to synergistic antitumor activity. Based on this rationale, we conducted a Phase I dose-escalation study combining the EGFR inhibitor erlotinib with the NF-kB inhibitor ixazomib in advanced solid tumors. Patients and methods. Patients with advanced solid tumors were eligible. The bayesian optimal interval phase I dose escalation design was used to establish the maximum tolerated dose and recommended phase 2 dose (RP2D). Results. Nineteen patients with a range of solid tumors were enrolled. The most common treatment-related adverse events of any grade were diarrhea (42.1%, 8/19), followed by rash (36.8%, 7/19) and nausea (21.1%, 4/19). The combination RP2D for oral ixazomib was 4.0 mg on days 1, 8, and 15 of a 28-day cycle, with oral erlotinib 150 mg daily. While no patient achieved RECIST v1.1 objective responses, 3 patients with advanced sarcoma experienced durable RECIST v1.1 stable disease ≥ 6 months (8.4, 10.6, and 15.7 months) and the best response was -13% decrease in clear cell sarcoma. Conclusions. The combination of erlotinib and ixazomib was safe and well tolerated among patients with advanced cancer, with preliminary signals of antitumor activity in patients with advanced sarcoma.
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We thank Amadeo Biter for the editorial input.
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Funded by Takeda Pharmaceutical.
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Conception and design: SK, DSH. Financial support: DSH. Administrative support: MS, LN, EJB. Collection and assembly of data: MS, LN, EJB. Data analysis and interpretation: SK, DSH. Manuscript writing: All authors. Final approval of manuscript: All authors. Accountable for all aspects of the work: All authors. All authors have read and approved the manuscript.
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Competing interests
Dr. Shumei Kato serves as consultant for Foundation Medicine and CureMatch; receives speaker’s fees; serves on the advisory board for Pfizer; and receives research funding from ACT Genomics, Sysmex, Konica Minolta, and OmniSeq.
Dr. Sarina A. Piha-Paul receives Clinical Trial Research Support/Grant Funding through the institution from the following sources:
AbbVie, Inc.; ABM Therapeutics, Inc.; Acepodia, Inc; Alkermes; Aminex Therapeutics; Amphivena Therapeutics, Inc.; BioMarin Pharmaceutical, Inc; Boehringer Ingelheim; Bristol Myers Squib; Cerulean Pharma, Inc.; Chugai Pharmaceutical Co., Ltd; Curis, Inc.; Daiichi Sankyo; Eli Lilly; ENB Therapeutics; Five Prime Therapeutics; F-Star Therapeutics; Gene Quantum; Genmab A/S; GlaxoSmithKline; Helix BioPharma Corp.; Incyte Corp.; Jacobio Pharmaceuticals Co., Ltd.; Medimmune, LLC.; Medivation, Inc.; Merck Sharp and Dohme Corp.; Novartis Pharmaceuticals; Pieris Pharmaceuticals, Inc.; Pfizer; Principia Biopharma, Inc.; Puma Biotechnology, Inc.; Rapt Therapeutics, Inc.; Seattle Genetics; Silverback Therapeutics; Taiho Oncology; Tesaro, Inc.; TransThera Bio; NCI/NIH; P30CA016672 – Core Grant (CCSG Shared Resources).
Dr. David S. Hong has following disclosures:
Research/Grant Funding: AbbVie, Adaptimmune, Adlai Nortye, Amgen, Astra-Zeneca, Bayer, Bristol Myers Squibb, Daiichi-Sankyo, Eisai, Eli Lilly, EMD Serono, Erasca, Fate Therapeutics, Genentech, Genmab, GlaxoSmithKline, Ignyta, Infinity, Kite, Kyowa, LOXO, Merck, MedImmune, Millenium, Mirati, miRNA, Molecular Templates, Mologen, Navier, NCI-CTEP, Novartis, Numab, Pfizer, Seattle Genetics, Takeda, Turning Point Therapeutics, Verstatem, VM Oncology.
Travel, Accommodations, Expenses: AACR, Amgen, ASCO, Astra Zeneca, Bayer, Celgene, Eli Lilly, Genentech, Genmab, GlaxoSmithKline, Janssen, LOXO, miRNA, Pfizer, Philips, SITC, Takeda.
Consulting, Speaker or Advisory Role: Alpha Insights, Acuta, Amgen, Axiom, Adaptimmune, Baxter, Bayer, Boxer Capital, COG, Ecor1, Genentech, GLG, Group H, Guidepoint, HCW Precision, Infinity, Janssen, Merrimack, Medscape, Numab, Pfizer, Prime Oncology, Seattle Genetics, ST Cube, Takeda, Tavistock, Trieza Therapeutics, WebMD.
Other ownership interests: Molecular Match (Advisor), OncoResponse (Founder), Presagia Inc (Advisor).
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Ixazomib and erlotinib against advanced cancer
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Kato, S., Adashek, J.J., Subbiah, V. et al. A phase i study of ixazomib and erlotinib in patients with advanced solid tumors. Invest New Drugs 40, 99–105 (2022). https://doi.org/10.1007/s10637-021-01153-y
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DOI: https://doi.org/10.1007/s10637-021-01153-y