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Y. Ooka · SciRah

Researcher profile · Semantic Scholar

Y. Ooka

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Y. Ooka — researcher profile on SciRah

h-index: 29
Works: 143
Citations: 3,091

Most-cited papers

Liver diseases in the Asia-Pacific region: a Lancet Gastroenterology & Hepatology Commission
S. Sarin, M. Kumar, M. Eslam, J. George +16 more
2019The Lancet Gastroenterology and Hepatology470 citations Open access
Semantic Scholar
Hepatic Arterial Infusion Chemotherapy versus Sorafenib in Patients with Advanced Hepatocellular Carcinoma
K. Ueshima, S. Ogasawara, M. Ikeda, Y. Yasui +18 more
2020Liver Cancer106 citations Open access
Semantic Scholar
APASL HCV guidelines of virus-eradicated patients by DAA on how to monitor HCC occurrence and HBV reactivation
T. Kanda, G. Lau, Lai Wei, M. Moriyama +19 more
2019Hepatology International106 citations Open access
Semantic Scholar
Very early response of circulating tumour-derived DNA in plasma predicts efficacy of nivolumab treatment in patients with non-small cell lung cancer.
Y. Iijima, Yosuke Hirotsu, Kenji Amemiya, Y. Ooka +10 more
2017European Journal of Cancer88 citations
Semantic Scholar
Sorafenib treatment in Child–Pugh A and B patients with advanced hepatocellular carcinoma: safety, efficacy and prognostic factors
S. Ogasawara, T. Chiba, Y. Ooka, N. Kanogawa +6 more
2015Investigational new drugs86 citations
Semantic Scholar
Liver function assessment according to the Albumin–Bilirubin (ALBI) grade in sorafenib-treated patients with advanced hepatocellular carcinoma
S. Ogasawara, T. Chiba, Y. Ooka, E. Suzuki +6 more
2015Investigational new drugs85 citations
Semantic Scholar
A randomized placebo‐controlled trial of prophylactic dexamethasone for transcatheter arterial chemoembolization
S. Ogasawara, T. Chiba, Y. Ooka, N. Kanogawa +9 more
2018Hepatology76 citations Open access
Semantic Scholar
Sequential therapy with sorafenib and regorafenib for advanced hepatocellular carcinoma: a multicenter retrospective study in Japan
S. Ogasawara, Y. Ooka, N. Itokawa, Masanori Inoue +28 more
2019Investigational new drugs66 citations Open access
Semantic Scholar
Potential of Lenvatinib for an Expanded Indication from the REFLECT Trial in Patients with Advanced Hepatocellular Carcinoma
Susumu Maruta, S. Ogasawara, Y. Ooka, Masamichi Obu +27 more
2020Liver Cancer63 citations Open access
Semantic Scholar
Switching to systemic therapy after locoregional treatment failure: Definition and best timing
S. Ogasawara, Y. Ooka, K. Koroki, Susumu Maruta +15 more
2020Clinical and Molecular Hepatology57 citations Open access
Semantic Scholar
Characteristics of patients with sorafenib-treated advanced hepatocellular carcinoma eligible for second-line treatment
S. Ogasawara, T. Chiba, Y. Ooka, E. Suzuki +16 more
2018Investigational new drugs53 citations
Semantic Scholar
Post-progression survival in patients with advanced hepatocellular carcinoma resistant to sorafenib
S. Ogasawara, T. Chiba, Y. Ooka, E. Suzuki +6 more
2016Investigational new drugs51 citations
Semantic Scholar
Histone lysine methyltransferase G9a is a novel epigenetic target for the treatment of hepatocellular carcinoma
M. Yokoyama, T. Chiba, Y. Zen, M. Oshima +20 more
2017OncoTarget43 citations Open access
Semantic Scholar
The impact of FGF19/FGFR4 signaling inhibition in antitumor activity of multi-kinase inhibitors in hepatocellular carcinoma
Hiroaki Kanzaki, T. Chiba, Jun-Jie Ao, K. Koroki +27 more
2021Scientific Reports41 citations Open access
Semantic Scholar
Evolution of Survival Impact of Molecular Target Agents in Patients with Advanced Hepatocellular Carcinoma
Kazufumi Kobayashi, S. Ogasawara, A. Takahashi, Yuya Seko +35 more
2021Liver Cancer39 citations Open access
Semantic Scholar
Serum fibroblast growth factor 19 serves as a potential novel biomarker for hepatocellular carcinoma
T. Maeda, Hiroaki Kanzaki, T. Chiba, Jun-Jie Ao +16 more
2019BMC Cancer37 citations Open access
Semantic Scholar
Sustained virologic response achieved after curative treatment of hepatitis C virus‐related hepatocellular carcinoma as an independent prognostic factor
N. Kanogawa, S. Ogasawara, T. Chiba, T. Saito +12 more
2015Journal of Gastroenterology and Hepatology37 citations
Semantic Scholar
Prediction of the very early occurrence of HCC right after DAA therapy for HCV infection
Y. Ooka, M. Kanda, Obi Shuntaro, Masato Nakamura +11 more
2018Hepatology International32 citations Open access
Semantic Scholar
Real-World Experiences with the Combination Treatment of Ledipasvir plus Sofosbuvir for 12 Weeks in HCV Genotype 1-Infected Japanese Patients: Achievement of a Sustained Virological Response in Previous Users of Peginterferon plus Ribavirin with HCV NS3/4A Inhibitors
T. Kanda, S. Yasui, Masato Nakamura, E. Suzuki +15 more
2017International Journal of Molecular Sciences26 citations Open access
Semantic Scholar
A prospective study exploring the safety and efficacy of lenvatinib for patients with advanced hepatocellular carcinoma and high tumor burden: The LAUNCH study.
Kazufumi Kobayashi, S. Ogasawara, Susumu Maruta, T. Okubo +28 more
2023Clinical Cancer Research23 citations
Semantic Scholar
Posttreatment after Lenvatinib in Patients with Advanced Hepatocellular Carcinoma
K. Koroki, N. Kanogawa, Susumu Maruta, S. Ogasawara +36 more
2021Liver Cancer23 citations Open access
Semantic Scholar
Analyses of Intermediate-Stage Hepatocellular Carcinoma Patients Receiving Transarterial Chemoembolization prior to Designing Clinical Trials
K. Koroki, S. Ogasawara, Y. Ooka, Hiroaki Kanzaki +26 more
2020Liver Cancer22 citations Open access
Semantic Scholar
Application of transcutaneous ultrasonography for the diagnosis of muscle mass loss in patients with liver cirrhosis
Kazufumi Kobayashi, H. Maruyama, S. Kiyono, S. Ogasawara +5 more
2018Journal of gastroenterology22 citations
Semantic Scholar
Exploring microsatellite instability in patients with advanced hepatocellular carcinoma and its tumor microenvironment
Shohei Mukai, Hiroaki Kanzaki, S. Ogasawara, Takamasa Ishino +29 more
2021JGH Open21 citations Open access
Semantic Scholar
Impact of Radiofrequency Ablation-Induced Glisson’s Capsule-Associated Complications in Patients with Hepatocellular Carcinoma
T. Wakamatsu, S. Ogasawara, T. Chiba, M. Yokoyama +7 more
2017PLoS ONE18 citations Open access
Semantic Scholar
Incidence and hemodynamic feature of risky esophageal varices with lower hepatic venous pressure gradient
H. Maruyama, Kazufumi Kobayashi, S. Kiyono, S. Ogasawara +8 more
2019International Journal of Medical Sciences17 citations Open access
Semantic Scholar
Clinical outcomes of endoscopic ultrasound-guided ethanol injection for hepatocellular carcinoma in the caudate lobe
S. Nakaji, N. Hirata, Rintaro Mikata, Masayoshi Kobayashi +6 more
2016Endoscopy International Open16 citations Open access
Semantic Scholar
Left gastric vein-based noninvasive test for esophageal varices: a same-day comparison of portal hemodynamic assessment with endoscopic appearance
H. Maruyama, Kazufumi Kobayashi, S. Kiyono, S. Ogasawara +4 more
2018Clinical and Translational Gastroenterology15 citations Open access
Semantic Scholar
Treatment of Real-World HCV Genotype 2-Infected Japanese Patients with Sofosbuvir plus Ribavirin
T. Kanda, Masato Nakamura, S. Yasui, Yuki Haga +10 more
2017Biology15 citations Open access
Semantic Scholar
Presence of non‐hypervascular hypointense nodules on Gadolinium‐ethoxybenzyl‐diethylenetriamine pentaacetic acid‐enhanced magnetic resonance imaging in patients with hepatocellular carcinoma
Masanori Inoue, S. Ogasawara, T. Chiba, Y. Ooka +5 more
2017Journal of Gastroenterology and Hepatology13 citations
Semantic Scholar
Transarterial chemoembolization as a substitute to radiofrequency ablation for treating Barcelona Clinic Liver Cancer stage 0/A hepatocellular carcinoma
Kentaro Ishikawa, T. Chiba, Y. Ooka, E. Suzuki +13 more
2018OncoTarget12 citations Open access
Semantic Scholar
Impact of acute decompensation on the prognosis of patients with hepatocellular carcinoma
T. Kondo, K. Koroki, Hiroaki Kanzaki, Kazufumi Kobayashi +13 more
2022PLoS ONE11 citations Open access
Semantic Scholar
Simultaneous detection of genetic and copy number alterations in BRCA1/2 genes
Yosuke Hirotsu, Y. Ooka, Ikuko Sakamoto, H. Nakagomi +1 more
2017OncoTarget10 citations Open access
Semantic Scholar
Interferon-free treatment for patients with chronic hepatitis C and autoimmune liver disease: higher SVR rates with special precautions for deterioration of autoimmune hepatitis
T. Kanda, S. Yasui, Masato Nakamura, S. Nakamoto +15 more
2018OncoTarget9 citations Open access
Semantic Scholar
Prognostic Significance of Concurrent Hypovascular and Hypervascular Nodules in Patients with Hepatocellular Carcinoma
S. Ogasawara, T. Chiba, T. Motoyama, N. Kanogawa +10 more
2016PLoS ONE9 citations Open access
Semantic Scholar
Utility of Prediction Scores for Hepatocellular Carcinoma in Patients with Chronic Hepatitis B Treated with Nucleos(t)ide Analogues
A. Tawada, T. Chiba, T. Saito, S. Ogasawara +8 more
2016Oncology9 citations
Semantic Scholar
Analysis of Sorafenib Outcome: Focusing on the Clinical Course in Patients with Hepatocellular Carcinoma
S. Ogasawara, T. Chiba, Y. Ooka, E. Suzuki +4 more
2016PLoS ONE8 citations Open access
Semantic Scholar
Liver biopsy technique in the era of genomic cancer therapies: a single-center retrospective analysis
Y. Ozeki, N. Kanogawa, S. Ogasawara, Keita Ogawa +27 more
2022International Journal of Clinical Oncology7 citations
Semantic Scholar
The long-term effect of biologics in patients with ulcerative colitis emerging from a large Japanese cohort
Yuya Yokoyama, Yuki Ohta, S. Ogasawara, J. Kato +22 more
2022Scientific Reports7 citations Open access
Semantic Scholar
Long-term administration of Tolvaptan to patients with decompensated cirrhosis
Kengo Kanayama, T. Chiba, Kazufumi Kobayashi, K. Koroki +15 more
2020International Journal of Medical Sciences7 citations Open access
Semantic Scholar
Risk factors of ineffective drainage in uncovered self-expandable metal stenting for unresectable malignant hilar biliary strictures
Koji Takahashi, T. Tsuyuguchi, A. Saiga, T. Horikoshi +12 more
2018OncoTarget7 citations Open access
Semantic Scholar
Henoch-Schönlein Purpura Complicated by Hepatocellular Carcinoma
Naoki Akizue, E. Suzuki, M. Yokoyama, Masanori Inoue +9 more
2017Internal medicine6 citations Open access
Semantic Scholar
Presence of non-hypervascular hypointense nodules on Gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid-enhanced magnetic resonance imaging in patients with hepatocellular carcinoma
Masanori Inoue, S. Ogasawara, T. Chiba, Y. Ooka +5 more
20176 citations
Semantic Scholar
Prediction of common hepatic artery catheter insertion based on celiac trunk morphology
A. Saiga, H. Yokota, A. Akutsu, Y. Ooka +4 more
2023Diagnostic and Interventional Radiology5 citations Open access
Semantic Scholar
The efficacy of contrast-enhanced computed tomography on the management of gastroesophageal varices in patients with hepatocellular carcinoma
T. Kondo, K. Fujiwara, Miyuki Nakagawa, Hidemi Unozawa +18 more
2022Scientific Reports5 citations Open access
Semantic Scholar
Propofol versus midazolam for sedation during radiofrequency ablation in patients with hepatocellular carcinoma
N. Kanogawa, S. Ogasawara, Y. Ooka, Masanori Inoue +29 more
2020JGH Open5 citations Open access
Semantic Scholar
Genome-Wide Mapping of Bivalent Histone Modifications in Hepatic Stem/Progenitor Cells
Kengo Kanayama, T. Chiba, M. Oshima, Hiroaki Kanzaki +12 more
2019Stem Cells International5 citations Open access
Semantic Scholar
Successful retreatment with grazoprevir and elbasvir for patients infected with hepatitis C virus genotype 1b, who discontinued prior treatment with NS5A inhibitor-including regimens due to adverse events
T. Kanda, S. Yasui, Masato Nakamura, S. Nakamoto +14 more
2018OncoTarget4 citations Open access
Semantic Scholar
Successful retreatment with sofosbuvir plus ledipasvir for cirrhotic patients with hepatitis C virus genotype 1b, who discontinued the prior treatment with asunaprevir plus daclatasvir: A case series and review of the literature
Yuki Haga, T. Kanda, S. Yasui, Masato Nakamura +12 more
2017OncoTarget4 citations Open access
Semantic Scholar
Randomized phase II study comparing two doses of regorafenib in second-line treatment for advanced hepatocellular carcinoma
K. Koroki, S. Ogasawara, S. Yumita, Miyuki Nakagawa +12 more
2025JHEP Reports3 citations Open access
Semantic Scholar

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S. Ogasawara×41
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S. Ogasawara — researcher profile on SciRah
E. Suzuki×39
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T. Chiba×38
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S. Kiyono — researcher profile on SciRah

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T. Kanda — researcher profile on SciRah