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Kawazoe A, Takahari D, Keisho C, Nakamura Y, Ikeno T, Wakabayashi M, Nomura S, Tamura H, Fukutani M, Hirano N, Saito Y, Kambe M, Sato A, Shitara K. A multicenter phase II study of TAS-114 in combination with S-1 in patients with pretreated advanced gastric cancer (EPOC1604). Gastric Cancer 2021; 24:190-196. [PMID: 32700159 DOI: 10.1007/s10120-020-01107-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 07/13/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND This is a phase 2 study aimed at evaluating the efficacy and safety of TAS-114, a novel deoxyuridine triphosphatase inhibitor, combined with S-1 in patients with advanced gastric cancer (AGC). METHODS Eligible patients had AGC with measurable lesions, according to the Response Evaluation Criteria in Solid Tumors (RECIST, v1.1), with two or more previous chemotherapy regimens including fluoropyrimidines, platinum agents, and taxanes or irinotecan. The primary endpoint was objective response rate (ORR) according to the RECIST, v1.1. Twenty-nine patients were required according to Simon's optimal two-stage design, with one-sided a = 5% and power = 80%. Threshold and expected ORRs were 5% and 25%. Patients received TAS-114 (400 mg/body, twice a day) and S-1 (30 mg/m2, twice a day) for 14 days, followed by 7 days of rest in one 3-week cycle. Protein expression levels of dUTPase and BRCA1 in tumor samples were determined by immunohistochemistry. RESULTS Accrual was terminated in June 2018 because meeting the predefined efficacy criteria was considered difficult. ORR and disease control rate were 5.0% [95% confidence interval (CI), 0.1-24.9%] and 70.0% (95% CI, 45.7-88.1%), respectively, for all 20 patients enrolled. Median progression-free survival (PFS) and overall survival were 2.4 months (95% CI, 1.2-3.3 months) and 7.1 months (95% CI, 5.2-9.4 months), respectively. Median PFS in the groups with high and low dUTPase protein expression in the cytoplasm was 2.8 months (95% CI, 1.4-3.9) and 1.6 months (95% CI, 0.6-2.4), respectively [hazard ratio, 0.40 (95% CI, 0.16-1.04), log-rank test two-sided p = 0.047]. Grade 3 or higher treatment-related adverse events included anemia (20%), leucopenia (15%), neutropenia (10%), rash (10%), thrombocytopenia (5%), and lymphopenia (5%) CONCLUSIONS: TAS-114 with S-1 showed only modest antitumor activity with acceptable safety profiles for patients heavily pretreated with AGC.
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Affiliation(s)
- Akihito Kawazoe
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Daisuke Takahari
- Department of Gastroenterology, The Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Chin Keisho
- Department of Gastroenterology, The Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Yoshiaki Nakamura
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Takashi Ikeno
- Clinical Research Support Office, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Masashi Wakabayashi
- Clinical Research Support Office, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Shogo Nomura
- Clinical Research Support Office, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Hitomi Tamura
- Clinical Research Support Office, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Miki Fukutani
- Clinical Research Support Office, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Nami Hirano
- Clinical Research Support Office, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Yumiko Saito
- Department of Clinical Research Department, The Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Moe Kambe
- Department of Clinical Research Department, The Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Akihiro Sato
- Clinical Research Support Office, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Kohei Shitara
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan.
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Doi T, Yoh K, Shitara K, Takahashi H, Ueno M, Kobayashi S, Morimoto M, Okusaka T, Ueno H, Morizane C, Okano N, Nagashima F, Furuse J. First-in-human phase 1 study of novel dUTPase inhibitor TAS-114 in combination with S-1 in Japanese patients with advanced solid tumors. Invest New Drugs 2018; 37:507-518. [PMID: 30511200 PMCID: PMC6538570 DOI: 10.1007/s10637-018-0697-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 11/12/2018] [Indexed: 12/23/2022]
Abstract
Background This first-in-human phase 1 study assessed the safety of TAS-114, a novel deoxyuridine triphosphatase inhibitor, combined with S-1 to determine its maximum tolerated dose (MTD) and recommended dose (RD). Methods In this dose-escalation study with a 3 + 3 design, TAS-114 and S-1 were concurrently administered orally under fasting conditions at 5-240 mg/m2 and 30-36 mg/m2, respectively, in patients with advanced solid tumors. Safety, efficacy, and pharmacokinetics (PK) were evaluated. Results Seventy-six patients were enrolled. The MTD and RD were TAS-114 200 mg/m2 plus S-1 36 mg/m2 and TAS-114 240 mg/m2 plus S-1 30 mg/m2, respectively. Common treatment-related adverse events were anemia, lymphocytopenia, leukopenia, neutropenia, decreased appetite, rash, nausea, and pigmentation disorder. Partial response (PR) was observed in 10 patients (non-small cell lung cancer [NSCLC], n = 5; pancreatic neuroendocrine tumor, n = 2; gastric cancer, n = 2; gallbladder cancer, n = 1). Of these, four patients achieved PR despite prior treatment history with S-1. Patients administered TAS-114 exhibited linear PK and CYP3A4 induction, with no effect on the PK of S-1. Conclusion TAS-114 plus S-1 showed tolerable, safe, and potentially effective results. To confirm safety and efficacy, two phase 2 studies are ongoing in NSCLC and gastric cancer patients. Clinical trial registration ClinicalTrials.gov ( NCT01610479 ) .
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Affiliation(s)
- Toshihiko Doi
- Department of Experimental Therapeutics, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan.
| | - Kiyotaka Yoh
- Department of Experimental Therapeutics, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Kohei Shitara
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Hideaki Takahashi
- Department of Experimental Therapeutics, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Makoto Ueno
- Department of Gastroenterology, Kanagawa Cancer Center, 2-3-2 Nakao, Asahi-ku, Yokohama, Kanagawa, 241-8515, Japan
| | - Satoshi Kobayashi
- Department of Gastroenterology, Kanagawa Cancer Center, 2-3-2 Nakao, Asahi-ku, Yokohama, Kanagawa, 241-8515, Japan
| | - Manabu Morimoto
- Department of Gastroenterology, Kanagawa Cancer Center, 2-3-2 Nakao, Asahi-ku, Yokohama, Kanagawa, 241-8515, Japan
| | - Takuji Okusaka
- Department of Hepatobiliary and Pancreatic Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Hideki Ueno
- Department of Hepatobiliary and Pancreatic Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Chigusa Morizane
- Department of Hepatobiliary and Pancreatic Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Naohiro Okano
- Department of Medical Oncology, Kyorin University Faculty of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo, 181-8611, Japan
| | - Fumio Nagashima
- Department of Medical Oncology, Kyorin University Faculty of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo, 181-8611, Japan
| | - Junji Furuse
- Department of Medical Oncology, Kyorin University Faculty of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo, 181-8611, Japan
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First-in-human, phase I dose-escalation study of single and multiple doses of a first-in-class enhancer of fluoropyrimidines, a dUTPase inhibitor (TAS-114) in healthy male volunteers. Cancer Chemother Pharmacol 2014; 73:577-83. [PMID: 24452393 DOI: 10.1007/s00280-014-2383-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Accepted: 01/09/2014] [Indexed: 10/25/2022]
Abstract
PURPOSE TAS-114 is a first-in-class oral deoxyuridine triphosphatase (dUTPase) inhibitor, which acts as a modulator of the pyrimidine nucleotide metabolic pathway. This was a first-in-human, phase 1 study that investigated the pharmacokinetics (PK) and safety of single-agent TAS-114 when it was given at single and multiple doses. METHODS For the single-dose cohort (n = 25), healthy male volunteers received a single dose of TAS-114 at 6, 18, 60, 150, and 300 mg. The magnitude of dihydropyrimidine dehydrogenase (DPD) inhibition and the food effect on TAS-114 PK were also investigated. For the multiple-dose cohort (n = 10), subjects received TAS-114 for 14 days consecutively. RESULTS In the dose-escalating single-dose cohort, the disposition of TAS-114 followed linear kinetics. The elimination half-life was approximately 2 h. The urine excretion rate and food effect were minimal. A significant increase in uracil Cmax was observed at administered doses of 150 mg or higher of TAS-114, suggesting that significant inhibition of DPD occurred at these doses. No apparent CYP3A4 auto-induction was observed in the multiple-dose cohort. No significant safety concerns at these dose levels were noted after single and multiple dosing. CONCLUSIONS TAS-114 has shown both a favorable safety and pharmacokinetic profile after single and repeated doses. TAS-114 was considered to possess a moderate DPD inhibitory effect. These findings will facilitate clinical studies of the combination chemotherapies in cancer patients and may reduce the safety risk in the frail cancer patients.
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