Phase I study of oral metronomic gemcitabine (D07001) in patients with advanced solid tumors.
Journal
The oncologist
Journal Volume
30
Journal Issue
4
Start Page
論文號碼 oyaf051
ISSN
1549-490X
Date Issued
2025-04-01
Author(s)
Chiang, Nai-Jung
Chen, Ming-Huang
Chao, Yee
Su, Wu-Chou
Bai, Li-Yuan
Wu, Shang-Yin
Shan, Yan-Shen
Li, Chung-Pin
Chen, Shang-Hung
Chung, Wei-Pang
Hao, Wei-Hua
Chen, Li-Tzong
Abstract
D07001-F4 is an absorption-enhanced oral gemcitabine developed in liquid formulation and adjusted to D07001-softgel capsules. We conducted 2 phase 1 studies to evaluate the dose-limiting toxicity (DLT), pharmacokinetics (PK), and maximum tolerated dose (MTD) of the 2 formulations of D07001 in patients with advanced solid tumors.
Initially, patients received escalating doses (2-80 mg) of D07001-F4 thrice a week for 2 weeks, followed by 1-week rest. Since no DLT was observed in the phase 1 study, the phase 1b study was conducted with D07001-softgel capsules (dose range: 40-120 mg) in patients with refractory gastrointestinal malignancies. A bridging dose of 40 mg was administered in the phase 1b study to achieve an equivalent intake of 80 mg of D07001-F4.
Fifty-three patients (phase 1, n = 34; phase 1b, n = 19) were enrolled. The mean oral bioavailability of D07001-F4 was ~39%. Two patients receiving 120 mg of D07001-softgel capsules experienced grade 3 hepatotoxicity and anorexia, respectively. Therefore, an additional 100 mg dose was tested and determined as the MTD. The Cmax and area under the curve of gemcitabine and its metabolite, 2', 2'-difluoro deoxyuridine, have a dose-dependent manner and comparable between the 2 formulations. Grade ≥ 3 anorexia (10.5%) and diarrhea (10.5%) were observed in the phase 1b extension study.
Our study demonstrated that D07001-softgel capsules can be safely administered as continuous dosing of up to 100 mg in patients with advanced solid tumors. Further studies are warranted to determine the appropriate dose in combination with other chemotherapy drugs.
Subjects
D07001
dose-limiting toxicity
maximum tolerable dose
oral gemcitabine
pharmacokinetics
solid tumors
SDGs
Type
journal article