K
Kazufumi Okada
Researcher at Hokkaido University
Publications - 16
Citations - 227
Kazufumi Okada is an academic researcher from Hokkaido University. The author has contributed to research in topics: Medicine & Internal medicine. The author has an hindex of 4, co-authored 5 publications receiving 152 citations.
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Journal ArticleDOI
Mass Screening of Asymptomatic Persons for Severe Acute Respiratory Syndrome Coronavirus 2 Using Saliva.
Isao Yokota,Peter Y Shane,Kazufumi Okada,Yoko Unoki,Yichi Yang,Tasuku Inao,Kentaro Sakamaki,Sumio Iwasaki,Kasumi Hayasaka,Junichi Sugita,Mutsumi Nishida,Shinichi Fujisawa,Takanori Teshima +12 more
TL;DR: Self-collected saliva is a valuable specimen to detect SARS-CoV-2 in mass screening of asymptomatic persons because of its high sensitivity and specificity.
Posted ContentDOI
Mass screening of asymptomatic persons for SARS-CoV-2 using saliva
Isao Yokota,Peter Y Shane,Kazufumi Okada,Yoko Unoki,Yichi Yang,Tasuku Inao,Kentaro Sakamaki,Sumio Iwasaki,Kasumi Hayasaka,Junichi Sugita,Mutsumi Nishida,Shinichi Fujisawa,Takanori Teshima +12 more
TL;DR: Self-collected saliva is a valuable specimen to detect SARS-CoV-2 in mass screening of asymptomatic persons because of its high sensitivity and specificity.
Journal ArticleDOI
Mass Screening of Asymptomatic Persons for SARS-CoV-2 Using Saliva
Isao Yokota,Peter Y Shane,Kazufumi Okada,Yoko Unoki,Yichi Yang,Tasuku Inao,Kentaro Sakamaki,Sumio Iwasaki,Kasumi Hayasaka,Junichi Sugita,Mutsumi Nishida,Shinichi Fujisawa,Takanori Teshima +12 more
TL;DR: Self-collected saliva is a valuable specimen to detect SARS-CoV-2 in mass screening of asymptomatic persons in a mass-screening study using reverse transcriptase polymerase chain reaction (RT-PCR) testing and nasopharyngeal and saliva specimens had high sensitivity and specificity.
Journal ArticleDOI
A novel strategy for SARS-CoV-2 mass screening with quantitative antigen testing of saliva: a diagnostic accuracy study.
Isao Yokota,Peter Y Shane,Kazufumi Okada,Yoko Unoki,Yichi Yang,Sumio Iwasaki,Shinichi Fujisawa,Mutsumi Nishida,Takanori Teshima +8 more
TL;DR: In this article, a two-step screening strategy with an initial CLEIA test followed by confirmatory RT-qPCR was proposed for salivary detection of SARS-CoV-2.
Journal ArticleDOI
Phase II Study of Ramucirumab Plus Irinotecan Combination Therapy as Second-Line Treatment in Patients with Advanced Gastric Cancer: HGCSG1603
T. Kawamoto,Satoshi Yuki,Kentaro Sawada,Michio Nakamura,Osamu Muto,Susumu Sogabe,Y Shindo,Atsushi Ishiguro,Atsushi Sato,Yasushi Tsuji,Masayoshi Dazai,Hiroyuki Okada,Takashi Meguro,Kazuaki Harada,Mari Sekiguchi,Kazufumi Okada,Yoichi M. Ito,Yuh Sakata,Naoya Sakamoto,Yoshito Komatsu +19 more
TL;DR: Although the primary endpoint was not achieved statistically, combination therapy of ramucirumab plus irinotecan showed anticancer activity and a manageable safety profile for second-line treatment of patients with advanced gastric cancer.