2015 - 2019 Individual-patient-based data meta-analysis of randomized trials in gastric cancer
2013 - 2017 Association of obesity indexes with metaboric risk factors
2013 - 2017 Re-evaluation of clinical effectiveness of four neuraminidase inhibitors against influenza viruses using molecular biology and epidemiological studies
2009 - 2010 Evaluation of validity of a surrogate variable based on the causal effect
2008 - 2010 Efficient Approaches of Case Registration and Data management in Clinical Trials
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Papers (292)：
Musashi Fukuda, Kentaro Sakamaki, Koji Oba. The net benefit for time-to-event outcome in oncology clinical trials with treatment switching. Clinical trials (London, England). 2023. 20. 6. 670-680
Hideo Fukuhara, Yasuhiro Hagiwara, Koji Oba, Keiji Inoue. Real-world experience with 5-aminolevulinic acid for photodynamic diagnosis of bladder cancer (3rd report): Cost impact of transurethral resection of bladder tumor in Japan. Photodiagnosis and photodynamic therapy. 2023. 44. 103758-103758
Shuhei Mayanagi, Koji Oba, Toru Aoyama, Kenji Tanaka, Mitsuro Kanda, Michitaka Honda, Hiromichi Maeda, Kosuke Kashiwabara, Masaru Muto, Junichi Sakamoto, et al. Feasibility and Safety of Adjuvant Chemotherapy for Resected Colorectal Cancer in Patients With Renal Insufficiency: A Pooled Analysis of Individual Patient Data from Five Japanese Large-scale Clinical Trials. Anticancer research. 2023. 43. 7. 3089-3095
Shinya Abe, Kazushige Kawai, Hiroaki Nozawa, Kazuhito Sasaki, Koji Murono, Shigenobu Emoto, Yuichiro Yokoyama, Hiroyuki Matsuzaki, Yuzo Nagai, Yuichiro Yoshioka, et al. Preoperative chemoradiotherapy using tegafur/uracil, oral leucovorin, and irinotecan (TEGAFIRI) followed by oxaliplatin-based chemotherapy as total neoadjuvant therapy for locally advanced rectal cancer: the study protocol for a phase II trial. BMC cancer. 2023. 23. 1. 450-450
Toru Aoyama, Koji Oba, Michitaka Honda, Masaru Muto, Shuhei Mayanagi, Hiromichi Maeda, Mitsuro Kanda, Kosuke Kashiwabara, Junichi Sakamoto, Takaki Yoshikawa. The clinical impacts of postoperative complications after colon cancer surgery for the clinical course of adjuvant treatment and survival. International journal of clinical oncology. 2023. 28. 6. 777-784
Hideaki Shimada, Takeo Fukagawa, Yoshio Haga, Shin-ichi Okazumi, Koji Oba. Clinical TNM staging for esophageal, gastric, and colorectal cancers in the era of neoadjuvant therapy: A systematic review of the literature. ANNALS OF GASTROENTEROLOGICAL SURGERY. 2021. 5. 4. 404-418
Multicenter phase Ib/II study of biweekly trifluridine/tipiracil with bevacizumab combination for patients with metastatic colorectal cancer refractory to standard therapies (BITS study).
(JOURNAL OF CLINICAL ONCOLOGY 2019)
Sustained Clinical Remission after Discontinuation of Infliximab with a Raising Dose Strategy in Patients with Rheumatoid Arthritis (RRRR study): A Randomized Controlled Trial
(ARTHRITIS & RHEUMATOLOGY 2018)
SAPPHIRE: A randomized phase II study of mFOLFOX6+panitumumab versus 5-FU/LV + panitumumab after 6 cycles of frontline mFOLFOX6+panitumumab in patients with colorectal cancer.
(JOURNAL OF CLINICAL ONCOLOGY 2018)
Trial in progress: A phase II study of second-line FOLFIRI plus panitumumab after first-line FOLFOX plus panitumumab for RAS wild-type colorectal cancer with evaluation of circulating tumor DNA.
(JOURNAL OF CLINICAL ONCOLOGY 2018)
Clinical impact of postoperative surgical complications on the colorectal cancer survival and recurrence: Analyses of pooled individual patients' data from three large phase III randomized trials
(ANNALS OF ONCOLOGY 2017)
