TATTON: a multi-arm, phase Ib trial of osimertinib combined with selumetinib, savolitinib, or durvalumab in EGFR-mutant lung cancer
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Background Osimertinib is a potent, third-generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI). The multi-arm phase Ib TATTON study (NCT02143466) was designed to assess the safety and tolerability of osimertinib in combination with other targeted therapies: selumetinib (MEK1/2 inhibitor), savolitinib (MET-TKI), or durvalumab [anti-programmed cell death ligand 1 (anti-PD-L1) monoclonal antibody].Patients and methods Patients with advanced EGFR-mutant non-small-cell lung cancer and disease progression on a prior EGFR-TKI were enrolled and allocated to dose-escalating cohorts combining osimertinib 80 mg orally (p.o.) once a day with selumetinib (25-75 mg p.o. twice a day; continuous or intermittent), savolitinib (600-800 mg p.o. once a day), or durvalumab (3-10 mg/kg intravenous every 2 weeks).Results At data cut-off (28 February 2018), 77 patients were enrolled and received osimertinib plus selumetinib (n = 36), savolitinib (n = 18), or durvalumab (n = 23). Most common adverse events (any grade), occurring in ≥20% of patients across dose groups, were: selumetinib arm-diarrhea (75%), rash (58%), nausea (47%); savolitinib arm-nausea (67%), rash (56%), vomiting (50%); durvalumab arm-rash (48%), vomiting (43%), diarrhea (39%). Dose-limiting toxicities were reported in the selumetinib 25 mg (n = 1), 50 mg (n = 1), and 75 mg (n = 4) continuous-dose groups, savolitinib 600 mg (n = 1) and 800 mg dose groups (n = 2), and durvalumab 10 mg/kg (n = 1) dose group. The objective response rate was 42% (95% confidence interval 26% to 59%), 44% (22% to 69%), and 43% (23% to 66%) in the selumetinib, savolitinib, and durvalumab arms, respectively.Conclusion Our results demonstrate the feasibility of combining osimertinib 80 mg with selumetinib or savolitinib at identified tolerable, active doses. A combination of osimertinib with durvalumab was not feasible due to increased reporting of interstitial lung disease. Osimertinib-based combination therapies represent a compelling approach now being further investigated.Clinical trials number NCT02143466.
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In the phase 1 study TATTON, the incidence rate of interstitial lung disease in the osimertinib plus durvalumab arm was 22%, leading to termination of patient enrollment.
“Additionally, in the phase 1 study TATTON, the incidence rate of interstitial lung disease in the osimertinib (a third-generation EGFR-TKI) plus durvalumab arm was unexpectedly high (22%), leading to the termination of patient enrollment [192].”
From Combination strategies with PD-1/PD-L1 blockade: current advances and future directions (2022) · cites this paper as [192]
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- Mok TS, Wu Y-L, Ahn M-J, et al. Osimertinib or platinumepemetrexed in EGFR T790Mepositive lung cancer. N Engl J Med. 2017;376:629e640.
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- Authors
- Oxnard, G. R., Yang, J. C.-H., Yu, H., Kim, S.-W., Saka, H., Horn, L., Goto, K., Ohe, Y., Mann, H., Thress, K. S., Frigault, M. M., Vishwanathan, K., Ghiorghiu, D., Ramalingam, S. S., & Ahn, M.-J.
- Affiliations
- Dana-Farber Cancer Institute (US)
- National Taiwan University (TW)
- Memorial Sloan Kettering Cancer Center (US)
- Asan Medical Center (KR)
- Nagoya Medical Center (JP)
- Vanderbilt University (US)
- National Cancer Centre Japan (JP)
- National Cancer Center Hospital (JP)
- AstraZeneca (United Kingdom) (GB)
- AstraZeneca (United States) (US)
- Emory University (US)
- Samsung Medical Center (KR)
- Corresponding author
- Oxnard, G.R.
- ORCID
- Venue
- Annals of Oncology
- Publisher
- Elsevier BV
- Published
- 2020-04
- Volume
- 31
- Issue
- 4
- Pages
- 507-516
- ISSN
- 0923-7534 (ISSN-L)
- OpenAlex
- W3001408868
- Cited by
- 438
- References
- 38
- Citations by year
- 2026: 33 · 2025: 53 · 2024: 62 · 2023: 63 · 2022: 101 · 2021: 91 · 2020: 33 · 2019: 1 · 2015: 1
- FWCI
- 40.53
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Annals of Oncology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- AstraZeneca
- Topics
- Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Treatments and Mutations
- Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Diagnosis and Treatment
- Health Sciences › Medicine › Oncology › HER2/EGFR in Cancer Research
- Keywords
- osimertinib, EGFR-mutant non-small cell lung cancer, selumetinib, savolitinib, durvalumab, combination therapy, EGFR tyrosine kinase inhibitors, MEK inhibitors, MET inhibitors, PD-L1 inhibitors, dose-limiting toxicity, safety and tolerability, objective response rate, advanced lung cancer
- MeSH terms
- Acrylamides, Aniline Compounds, Antibodies, Monoclonal, Antineoplastic Combined Chemotherapy Protocols, Benzimidazoles, Carcinoma, Non-Small-Cell Lung, Humans, Indoles, Lung Neoplasms, Mutation, Pyrazines, Pyrimidines, Triazines, Protein Kinase Inhibitors, ErbB Receptors
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