K. Ohkawa

Yusuke Takahashi, M. Yano, Kazuyoshi Yamamoto, 2020, Pancreatology : official journal of the International Association of Pancreatology (IAP) ... [et al.].

Therapeutic efficacy of lenvatinib in hepatocellular carcinoma patients with portal hypertension

K. Ohkawa, T. Kodama, Ryoko Yamada, 2020, Hepatology research : the official journal of the Japan Society of Hepatology.

Absence of invariant natural killer T cells deteriorates liver inflammation and fibrosis in mice fed high-fat diet

N. Hayashi, N. Hiramatsu, K. Ohkawa, 2010, Journal of Gastroenterology.

Asymptomatic curable pancreatic ductal carcinoma detected during the follow-up of pancreatic cysts distinct from carcinoma

K. Imanaka, N. Kawada, Y. Tomita, 2011, Clinical journal of gastroenterology.

Clinical outcomes of direct‐acting antiviral treatments for patients with hepatitis C after hepatocellular carcinoma are equivalent to interferon treatment

Y. Imai, N. Hiramatsu, K. Ohkawa, 2020, Hepatology research : the official journal of the Japan Society of Hepatology.

Identification of Multiple Transcription Factors , HLF , FTF , and E 4 BP 4 , Controlling Hepatitis B Virus Enhancer II

N. Hayashi, A. Kasahara, K. Ohkawa, 1999 .

Anticancer chemotherapy inhibits MHC class I-related chain a ectodomain shedding by downregulating ADAM10 expression in hepatocellular carcinoma.

N. Hayashi, N. Hiramatsu, K. Ohkawa, 2009, Cancer research.

New Screening System Using Forward-Viewing Radial Endoscopic Ultrasound and Magnetic Resonance Imaging for High-Risk Individuals With Familial History of Pancreatic Cancer

K. Ohkawa, K. Ikezawa, S. Nagata, 2022, Frontiers in Medicine.

Alteration in Gene Expression Profile by Full-Length Hepatitis B Virus Genome

N. Hayashi, A. Kasahara, N. Hiramatsu, 2005, Intervirology.

Efficacy of Ramucirumab Versus Sorafenib as Subsequent Treatment for Hepatocellular Carcinoma

K. Ohkawa, T. Kodama, Ryoko Yamada, 2021, AntiCancer Research.

Computed tomography during hepatic arteriography pattern may predict hepatocellular carcinoma recurrence following transarterial chemoembolization

K. Imanaka, K. Ohkawa, T. Nakazawa, 2014, Hepatology research : the official journal of the Japan Society of Hepatology.

Relation of disease activity during chronic hepatitis C infection to complexity of hypervariable region 1 quasispecies

N. Hayashi, A. Kasahara, H. Fusamoto, 1997, Hepatology.

Ef ﬁ cacy and safety of modi ﬁ ed ﬂ uorouracil/leucovorin plus irinotecan and oxaliplatin (mFOLFIRINOX) compared with S-1 as second-line chemotherapy in metastatic pancreatic cancer

K. Ohkawa, K. Ikezawa, R. Ashida, 2021 .

Prior splenic irradiation reduces hematologic adverse events during chemotherapy in pancreatic tail cancer: a report of a patient with liver cirrhosis

K. Imanaka, K. Ohkawa, K. Ikezawa, 2010, Clinical journal of gastroenterology.

Chemotherapy effectiveness and age-group analysis of older adult patients with metastatic pancreatic cancer: A Japanese cancer registry cohort study.

I. Miyashiro, K. Ohkawa, K. Ikezawa, 2022, Journal of geriatric oncology.

Early detection of venous thromboembolism after the initiation of chemotherapy predicts a poor prognosis in patients with unresectable metastatic pancreatic cancer who underwent first-line chemotherapy with gemcitabine plus nab-paclitaxel

K. Ohkawa, K. Ikezawa, N. Fukutake, 2022, PloS one.

Clinical Features and Prognosis of Patients With the Bone Metastasis of Pancreatic Cancer: A Single-Institutional Cohort Study.

N. Naka, N. Araki, K. Ohkawa, 2018, Pancreas.

Phase I study of chemoradiation therapy (nab-paclitaxel/Gemcitabine) in 15 patients with unresectable locally advanced pancreatic cancer (UR-LAPC).

T. Teshima, K. Ohkawa, Takeshi Tamura, 2015 .

Establishment of organoids using residual samples from saline flushes during endoscopic ultrasound-guided fine-needle aspiration in patients with pancreatic cancer

K. Ohkawa, K. Ikezawa, H. Ogawa, 2022, Endoscopy International Open.

Risk of hepatocellular carcinoma after sustained virologic response in hepatitis C virus patients without advanced liver fibrosis

N. Hiramatsu, K. Imanaka, K. Ohkawa, 2022, Hepatology research : the official journal of the Japan Society of Hepatology.

Multicenter cooperative case survey of hepatitis B virus reactivation by chemotherapeutic agents

M. Kudo, J. Furuse, M. Mizokami, 2015, Hepatology research : the official journal of the Japan Society of Hepatology.

Adjuvant nivolumab for hepatocellular carcinoma (HCC) after surgical resection (SR) or radiofrequency ablation (RFA) (NIVOLVE): A phase 2 prospective multicenter single-arm trial and exploratory biomarker analysis.

M. Kudo, Y. Minami, K. Ueshima, 2021 .

Improved diagnosis of well‐differentiated hepatocellular carcinoma with gadolinium ethoxybenzyl diethylene triamine pentaacetic acid‐enhanced magnetic resonance imaging and Sonazoid contrast‐enhanced ultrasonography

K. Imanaka, N. Kawada, Y. Tomita, 2010, Hepatology research : the official journal of the Japan Society of Hepatology.

Detection of circulating tumor DNA from pancreatic cancer using next-generation sequencing and possible clinical applications

Y. Kukita, Kikuya Kato, K. Ohkawa, 2018, Suizo.

Hammerhead ribozyme-mediated inhibition of telomerase activity in extracts of human hepatocellular carcinoma cells.

N. Hayashi, A. Kasahara, K. Ohkawa, 1996, Biochemical and biophysical research communications.

The Hepatitis B Virus Genotype Affects the Persistence of Viral Replication in Immunodeficient NOG Mice

A. Ryo, H. Suemizu, N. Hiramatsu, 2015, PloS one.

Hepatitis C virus replicative levels and efficiency of genotyping by specific PCR and antibody assay

N. Hayashi, A. Kasahara, H. Fusamoto, 1997, Journal of clinical microbiology.

Clinical characteristics and antibody profiles of chronic hepatitis C patients: Relation to hepatitis C virus genotypes

N. Hayashi, A. Kasahara, H. Fusamoto, 1995, Journal of medical virology.

Hepatitis C virus replication and antibody responses toward specific hepatitis C virus proteins

N. Hayashi, A. Kasahara, H. Fusamoto, 1994, Hepatology.

Significance of serum soluble Fas antigen level in chronic hepatitis C patients treated with interferon: Relationship to the therapeutic response

N. Hayashi, A. Kasahara, N. Hiramatsu, 2001, Journal of gastroenterology and hepatology.

Activated liver dendritic cells generate strong acquired immunity in alpha-galactosylceramide treatment.

N. Hayashi, K. Ohkawa, T. Tatsumi, 2009, Journal of hepatology.

Letter: serum growth differentiation factor 15 predicts hepatocellular carcinoma occurrence after hepatitis C virus elimination—authors' reply

Y. Imai, N. Hiramatsu, K. Ohkawa, 2022, Alimentary pharmacology & therapeutics.

Type B Fulminant Hepatitis Is Closely Associated with a Highly Mutated Hepatitis B Virus Strain

N. Hayashi, N. Hiramatsu, K. Ohkawa, 2007, Intervirology.

Hepatitis C Virus Antibodies and Virus Replication in Asymptomatic Blood Donors

N. Hayashi, A. Kasahara, H. Fusamoto, 1994, Vox sanguinis.

Immune responses toward HCV core NS3, and NS4 proteins in HCV RNA-positive chronic hepatitis C patients

N. Hayashi, A. Kasahara, H. Fusamoto, 1994 .

Hepatitis C virus antibody and hepatitis C virus replication in chronic hepatitis B patients.

N. Hayashi, H. Fusamoto, K. Ohkawa, 1994, Journal of hepatology.

Quantitative analysis of antibody to hepatitis C virus envelope 2 glycoprotein in patients with chronic hepatitis C virus infection

N. Hayashi, A. Kasahara, H. Fusamoto, 1996, Hepatology.

Ribavirin dose reduction raises relapse rate dose‐dependently in genotype 1 patients with hepatitis C responding to pegylated interferon alpha‐2b plus ribavirin

Y. Imai, N. Hayashi, A. Kasahara, 2009, Journal of viral hepatitis.

Prediction Model for Intrahepatic Distant Recurrence After Radiofrequency Ablation for Primary Hepatocellular Carcinoma 2 cm or Smaller

Y. Imai, N. Hiramatsu, K. Ohkawa, 2022, Digestive Diseases and Sciences.

Initial viral response is the most powerful predictor of the emergence of YMDD mutant virus in chronic hepatitis B patients treated with lamivudine

Y. Imai, N. Hayashi, A. Kasahara, 2008, Hepatology Research.

Multiomics identifies the link between intratumor steatosis and the exhausted tumor immune microenvironment in hepatocellular carcinoma

Y. Imai, H. Eguchi, T. Tokino, 2022, Hepatology.

Serum levels of soluble major histocompatibility complex (MHC) class I‐related chain A in patients with chronic liver diseases and changes during transcatheter arterial embolization for hepatocellular carcinoma

N. Hayashi, N. Hiramatsu, K. Ohkawa, 2008, Cancer science.

Hepatocellular carcinoma occurrence does not differ between interferon‐based and interferon‐free treatment with liver histological assessment

Y. Imai, N. Hiramatsu, K. Ohkawa, 2019, Hepatology research : the official journal of the Japan Society of Hepatology.

Frequency of, and factors associated with, hepatitis B virus reactivation in hepatitis C patients treated with all‐oral direct‐acting antivirals: Analysis of a Japanese prospective cohort

Y. Imai, K. Ohkawa, T. Kodama, 2017, Hepatology research : the official journal of the Japan Society of Hepatology.

Suppressive effect on hepatocyte differentiation of hepatitis C virus core protein.

N. Hayashi, N. Hiramatsu, K. Ohkawa, 2006, Biochemical and biophysical research communications.

Lamivudine-to-entecavir switching treatment in type B chronic hepatitis patients without evidence of lamivudine resistance

Y. Imai, N. Hayashi, A. Kasahara, 2009, Journal of gastroenterology.

Supportive role played by precore and preS2 genomic changes in the establishment of lamivudine-resistant hepatitis B virus.

N. Hayashi, K. Ohkawa, H. Hikita, 2008, Journal of Infectious Diseases.

Early emergence of entecavir‐resistant hepatitis B virus in a patient with hepatitis B virus/human immunodeficiency virus coinfection

N. Hayashi, N. Hiramatsu, K. Ohkawa, 2008, Hepatology research : the official journal of the Japan Society of Hepatology.

Two types of drug-resistant hepatitis B viral strains emerging alternately and their susceptibility to combination therapy with entecavir and adefovir

N. Hayashi, N. Hiramatsu, K. Ohkawa, 2009, Antiviral therapy.

Factors contributing to antiviral effect of adefovir dipivoxil therapy added to ongoing lamivudine treatment in patients with lamivudine-resistant chronic hepatitis B

Y. Imai, N. Hayashi, A. Kasahara, 2009, Journal of Gastroenterology.

Mutations associated with the therapeutic efficacy of adefovir dipivoxil added to lamivudine in patients resistant to lamivudine with type B chronic hepatitis

N. Hayashi, K. Ohkawa, H. Hikita, 2009, Journal of medical virology.

Viral covalently closed circular DNA in a non-transgenic mouse model for chronic hepatitis B virus replication.

N. Hayashi, K. Ohkawa, A. Hosui, 2006, Journal of hepatology.

Thrombospondin-2 as a Predictive Biomarker for Hepatocellular Carcinoma after Hepatitis C Virus Elimination by Direct-Acting Antiviral

N. Hiramatsu, K. Ohkawa, T. Kodama, 2023, Cancers.

Fatal exacerbation of type B chronic hepatitis triggered by changes in relaxed circular viral DNA synthesis and virion secretion.

N. Hayashi, K. Ohkawa, A. Hosui, 2010, Biochemical and biophysical research communications.

Sequencing analysis of the terminal protein region in patients showing persistent remission of chronic hepatitis B

N. Hayashi, A. Kasahara, H. Fusamoto, 1995 .

Long‐term follow‐up of hepatitis B virus and hepatitis C virus replicative levels in chronic hepatitis patients coinfected with both viruses

N. Hayashi, A. Kasahara, H. Fusamoto, 1995, Journal of medical virology.

Two-step progression of varenicline-induced autoimmune hepatitis

K. Ohkawa, M. Sakakibara, K. Katayama, 2018, Clinical Journal of Gastroenterology.

Natural killer cell is a major producer of interferon γ that is critical for the IL-12-induced anti-tumor effect in mice

N. Hayashi, N. Hiramatsu, K. Ohkawa, 2010, Cancer Immunology, Immunotherapy.

Intravenous injection of naked plasmid DNA encoding hepatitis B virus (HBV) produces HBV and induces humoral immune response in mice.

N. Hayashi, K. Ohkawa, Y. Sasaki, 2003, Biochemical and biophysical research communications.

Cleavage of viral RNA and inhibition of viral translation by hepatitis C virus RNA-specific hammerhead ribozyme in vitro.

N. Hayashi, A. Kasahara, K. Ohkawa, 1997, Journal of hepatology.

Pretreatment with antibiotics is associated with reduced therapeutic response to atezolizumab plus bevacizumab in patients with hepatocellular carcinoma

N. Hiramatsu, K. Imanaka, K. Ohkawa, 2023, PloS one.

Selective identification of somatic mutations in pancreatic cancer cells through a combination of next-generation sequencing of plasma DNA using molecular barcodes and a bioinformatic variant filter

Y. Kukita, Kikuya Kato, K. Ohkawa, 2018, PloS one.

Serum growth differentiation factor 15 predicts hepatocellular carcinoma occurrence after hepatitis C virus elimination

Y. Imai, N. Hiramatsu, S. Kato, 2021, Alimentary pharmacology & therapeutics.

ST6GAL1 Is a Novel Serum Biomarker for Lenvatinib-Susceptible FGF19-Driven Hepatocellular Carcinoma

H. Eguchi, K. Ohkawa, T. Kodama, 2020, Clinical Cancer Research.

Chemotherapy-Induced Sclerosing Cholangitis Caused by Systemic Chemotherapy

K. Ohkawa, K. Ikezawa, S. Nagata, 2019, ACG Case Reports Journal.

Solitary fibrous tumor of the liver from development to resection.

H. Nagano, N. Hiramatsu, K. Wakasa, 2015, Internal medicine.

Expression of vascular permeability factor/vascular endothelial growth factor in human hepatocellular carcinoma.

N. Hayashi, T. Kamada, Masato Yamamoto, 1996, Cancer research.

Utility of Comprehensive Genomic Profiling Tests for Patients with Incurable Pancreatic Cancer in Clinical Practice

N. Sugimoto, Y. Kukita, K. Ohkawa, 2023, Cancers.

Usefulness of on‐site cytology of liver tumor biopsy in specimen sampling for cancer genomic profiling test

K. Ohkawa, S. Nagata, Keiichiro Honma, 2023, Cancer medicine.

Interleukin-6 Is a Circulating Prognostic Biomarker for Hepatocellular Carcinoma Patients Treated with Combined Immunotherapy

Y. Imai, K. Ohkawa, T. Kodama, 2022, Cancers.

Primary Pancreatic Mantle Cell Lymphoma Diagnosed via Endoscopic Ultrasound-Guided Fine-Needle Aspiration

K. Ohkawa, K. Ikezawa, N. Fukutake, 2021, Case Reports in Gastroenterology.

Potential use of point shear wave elastography for the pancreas: a single center prospective study.

N. Kawada, Y. Tomita, T. Arisawa, 2014, European journal of radiology.

Hyperprogressive disease in patients with unresectable hepatocellular carcinoma receiving atezolizumab plus bevacizumab therapy

Y. Imai, K. Ohkawa, T. Kodama, 2021, Hepatology research : the official journal of the Japan Society of Hepatology.

Efficacy and safety of modified fluorouracil/leucovorin plus irinotecan and oxaliplatin (mFOLFIRINOX) compared with S‐1 as second‐line chemotherapy in metastatic pancreatic cancer

T. Tabuchi, K. Ohkawa, K. Ikezawa, 2021, JGH open : an open access journal of gastroenterology and hepatology.

Establishment of preanalytical conditions for microRNA profile analysis of clinical plasma samples

T. Yoshikawa, T. Ochiya, N. Sugimoto, 2022, PloS one.

Hepatitis C Virus Core Protein Differently Regulates the JAK-STAT Signaling Pathway under Interleukin-6 and Interferon-γ Stimuli*

N. Hayashi, A. Kasahara, K. Ohkawa, 2003, Journal of Biological Chemistry.

Involvement of p38 signaling pathway in interferon-alpha-mediated antiviral activity toward hepatitis C virus.

N. Hayashi, N. Hiramatsu, K. Ohkawa, 2004, Biochemical and biophysical research communications.

Changes in gene expression profile by HCV core protein in cultured liver cells: analysis by DNA array assay.

N. Hayashi, A. Kasahara, K. Ohkawa, 2003, Hepatology research : the official journal of the Japan Society of Hepatology.

A single nucleotide polymorphism of the low molecular mass polypeptide 7 gene influences the interferon response in patients with chronic hepatitis C

N. Hayashi, A. Kasahara, K. Ohkawa, 2002, Journal of viral hepatitis.

Nonstructural protein 5A/P32 deletion after failure of ledipasvir/sofosbuvir in hepatitis C virus genotype 1b infection

Y. Imai, K. Ohkawa, T. Kodama, 2018, Hepatology.

Improved Liver Function After Sustained Virologic Response Enhanced Prognosis in Hepatitis C with Compensated Advanced Liver Fibrosis

Y. Imai, N. Hiramatsu, K. Ohkawa, 2022, Digestive Diseases and Sciences.

Subclassification of patients with intermediate-stage (Barcelona Clinic Liver Cancer stage-B) hepatocellular carcinoma using the up-to-seven criteria and serum tumor markers

K. Imanaka, K. Ohkawa, Takeshi Tamura, 2016, Hepatology International.

Final results of adjuvant nivolumab for hepatocellular carcinoma (HCC) after surgical resection (SR) or radiofrequency ablation (RFA) (NIVOLVE): A phase 2 prospective multicenter single-arm trial and exploratory biomarker analysis.

M. Kudo, Y. Minami, K. Ueshima, 2022, Journal of Clinical Oncology.

Risk of peritoneal carcinomatosis by endoscopic ultrasound-guided fine needle aspiration for pancreatic cancer

K. Imanaka, K. Ohkawa, K. Ikezawa, 2013, Journal of Gastroenterology.

Combined brush cytology and stent placement in a single session for presumed malignant biliary stricture

K. Imanaka, N. Kawada, K. Ohkawa, 2011, Journal of gastroenterology and hepatology.

Clinical Practice Guidelines for Hepatocellular Carcinoma: The Japan Society of Hepatology 2021 version (5th JSH‐HCC Guidelines)

M. Kudo, K. Ueshima, U. Motosugi, 2023, Hepatology research : the official journal of the Japan Society of Hepatology.

Immunotherapy of murine colon cancer using receptor tyrosine kinase EphA2‐derived peptide‐pulsed dendritic cell vaccines

N. Hayashi, T. Mizushima, K. Ohkawa, 2007, Cancer.

Injection of IL-12 gene-transduced dendritic cells into mouse liver tumor lesions activates both innate and acquired immunity

N. Hayashi, K. Ohkawa, R. Sakamori, 2007, Gene Therapy.

Endoscopic ultrasound-guided fiducial marker placement for neoadjuvant chemoradiation therapy for resectable pancreatic cancer

S. Ohira, T. Teshima, K. Ohkawa, 2020, World journal of gastrointestinal oncology.

Efficacy of Larger-Diameter Plastic Stent Placement for Preoperative Biliary Drainage in Patients Receiving Neoadjuvant Chemoradiation for Pancreatic Cancer

K. Ohkawa, K. Ikezawa, Hidenori Takahashi, 2020, Pancreas.

Alterations in hepatitis B virus nucleotide sequences in a chronic virus carrier from immunotolerant to immunoactive phase.

N. Hayashi, K. Ohkawa, A. Hosui, 2010, Biochemical and biophysical research communications.

The Effectiveness of a Liver Disease Education Class for Providing Information to Patients and Their Families

K. Ohkawa, M. Sakakibara, K. Katayama, 2017, Journal of clinical medicine research.

A case of symptomatic primary biliary cirrhosis complicated by Behçet s disease which emerged with joint swelling

N. Hiramatsu, E. Morii, K. Ohkawa, 2015 .

Metastatic undifferentiated pleomorphic sarcoma diagnosed by endoscopic ultrasound‐guided fine‐needle aspiration

K. Ohkawa, K. Ikezawa, S. Nagata, 2022, JGH open : an open access journal of gastroenterology and hepatology.

Hepatitis C Virus Core Functions as a Suppressor of Cyclin-dependent Kinase-activating Kinase and Impairs Cell Cycle Progression*

N. Hayashi, K. Ohkawa, A. Hosui, 2004, Journal of Biological Chemistry.

Main pancreatic duct dilatation and pancreatic cysts in relatives and spouses of patients with pancreatic cancer

K. Ohkawa, K. Ikezawa, Sachiko Tanaka, 2023, PloS one.

Juvenile hepatocellular carcinoma with congestive liver cirrhosis

N. Hayashi, A. Kasahara, N. Hiramatsu, 2005, Journal of Gastroenterology.

Occurrence of a d-arabinose-containing complex-type free-N-glycan in the urine of cancer patients

K. Ohkawa, M. Ohue, Y. Miyamoto, 2022, Scientific Reports.

Number of Nodules but not Size of Hepatocellular Carcinoma Can Predict Refractoriness to Transarterial Chemoembolization and Poor Prognosis

K. Ohkawa, N. Maeda, Yuri Ito, 2018, Journal of clinical medicine research.

A case of gallbladder metastasis from nasal mucosal melanoma with noteworthy endoscopic ultrasonography findings.

K. Ohkawa, K. Ikezawa, S. Nagata, 2023, Journal of medical ultrasonics.

Natural killer cell-mediated ablation of metastatic liver tumors by hydrodynamic injection of IFNalpha gene to mice.

N. Hayashi, N. Hiramatsu, K. Ohkawa, 2007, International journal of cancer.

Decreased expressions of CD1d molecule on liver dendritic cells in subcutaneous tumor bearing mice.

N. Hayashi, K. Ohkawa, T. Tatsumi, 2008, Journal of hepatology.

Intrahepatic delivery of alpha-galactosylceramide-pulsed dendritic cells suppresses liver tumor.

N. Hayashi, K. Ohkawa, R. Sakamori, 2007, Hepatology.

Revisions of the clinical practice guidelines for hepatocellular carcinoma in 2021 version

M. Kudo, K. Ueshima, U. Motosugi, 2023, Kanzo.

Effect of sofosbuvir and velpatasvir therapy on clinical outcome in hepatitis C virus patients with decompensated cirrhosis

N. Hiramatsu, K. Imanaka, K. Ohkawa, 2022, Hepatology research : the official journal of the Japan Society of Hepatology.

Lower Serum Sodium Levels Are Associated with the Therapeutic Effect of Sorafenib on Hepatocellular Carcinoma

Y. Imai, N. Hiramatsu, K. Imanaka, 2020, Digestive Diseases and Sciences.

Evaluating the ability to detect pancreatic lesions using a special ultrasonography examination focusing on the pancreas.

K. Ohkawa, T. Ioka, R. Ashida, 2017, European journal of radiology.

Hepatitis C virus core protein differently regulates the JAK-STAT signaling pathway under interleukin-6 and interferon-gamma stimuli.

N. Hayashi, A. Kasahara, K. Ohkawa, 2003, The Journal of biological chemistry.

Success rate of microsatellite instability examination and complete response with pembrolizumab in biliary tract cancer

K. Ohkawa, K. Ikezawa, S. Nagata, 2021, JGH open : an open access journal of gastroenterology and hepatology.

Letter: evaluation and proposed reclassification of HCC prediction model of Tahata et al. in chronic hepatitis C genotype 4 patient. Authors’ reply

Y. Imai, N. Hiramatsu, K. Ohkawa, 2021, Alimentary Pharmacology and Therapeutics.

Disease stage of chronic hepatitis C assessed by both peritoneoscopic and histologic findings and its relationship with response to interferon therapy.

N. Hayashi, A. Kasahara, H. Fusamoto, 1997, Gastrointestinal endoscopy.

K. Imanaka, N. Kawada, K. Ohkawa, 2014, Hepato-gastroenterology.

Initial treatment response to transarterial chemoembolization as a predictive factor for Child–Pugh class deterioration prior to refractoriness in hepatocellular carcinoma

Y. Imai, K. Ohkawa, T. Kodama, 2020, Hepatology research : the official journal of the Japan Society of Hepatology.

Blood Screening for Asymptomatic Hepatitis C Virus Carriers with Second-generation Hepatitis C Virus Antibody Assays

N. Hayashi, A. Kasahara, H. Fusamoto, 1994 .

The phase I study of concurrent chemoradiotherapy using a combination of gemcitabine and nab-paclitaxel for unresectable locally advanced pancreatic cancer: Update.

T. Teshima, K. Ohkawa, Hidenori Takahashi, 2017 .

Pembrolizumab as Second-Line Therapy for Advanced Hepatocellular Carcinoma: A Subgroup Analysis of Asian Patients in the Phase 3 KEYNOTE-240 Trial

M. Kudo, M. Kurosaki, T. Yau, 2021, Liver Cancer.

Quick and stable parallel puncture of hepatic tumors using a double‐barreled needle direction system for ultrasound‐guided bipolar radiofrequency ablation

K. Imanaka, K. Ohkawa, Kazuhiro Katayama, 2016, Hepatology research : the official journal of the Japan Society of Hepatology.

A case of multiple myeloma with pancreatic involvement diagnosed via endoscopic ultrasound‐guided fine needle aspiration

K. Ohkawa, K. Ikezawa, R. Takada, 2023, Clinical case reports.

Impact of branched‐chain amino acid supplementation on survival in patients with advanced hepatocellular carcinoma treated with sorafenib: A multicenter retrospective cohort study

Y. Imai, S. Marubashi, N. Hayashi, 2016, Hepatology research : the official journal of the Japan Society of Hepatology.

Efficacy and safety of mycophenolate mofetil in treating immune‐related hepatitis induced by immune checkpoint inhibitor use: A retrospective study

K. Ohkawa, T. Kumagai, T. Isei, 2023, JGH Open: An Open Access Journal of Gastroenterology and Hepatology.

Ampullary cancer detected upon re‐examination in a patient initially diagnosed as cancer of unknown primary

K. Ohkawa, T. Kudo, K. Ikezawa, 2022, JGH open : an open access journal of gastroenterology and hepatology.

A case of refractory tumor bleeding from an ampullary adenocarcinoma: Compression hemostasis with a self‐expandable metallic stent

K. Ohkawa, K. Ikezawa, N. Fukutake, 2021, DEN open.

Prognostic Factors for Patients With a Large Number of Hepatocellular Carcinoma Nodules

T. Tabuchi, K. Ohkawa, H. Hikita, 2020, Journal of clinical medicine research.

An age-group analysis on the efficacy of chemotherapy in older adult patients with metastatic biliary tract cancer: a Japanese cancer registry cohort study

I. Miyashiro, K. Ohkawa, K. Ikezawa, 2023, BMC Gastroenterology.

Nanvuranlat, an L-type amino acid transporter (LAT1) inhibitor for patients with pretreated advanced refractory biliary tract cancer (BTC): Primary endpoint results of a randomized, double-blind, placebo-controlled phase 2 study.

J. Furuse, M. Ikeda, N. Yokoyama, 2023, Journal of Clinical Oncology.

Hospital volume and prognosis of patients with metastatic pancreatic cancer: A study using the Osaka Cancer Registry.

T. Tabuchi, I. Miyashiro, K. Ohkawa, 2023, Journal of cancer research and clinical oncology.

Identification of Multiple Transcription Factors, HLF, FTF, and E4BP4, Controlling Hepatitis B Virus Enhancer II

N. Hayashi, A. Kasahara, K. Ohkawa, 2000, Journal of Virology.

Activated liver dendritic cells generate strong acquired immunity in alpha-galactosylceramide treatment.

N. Hayashi, K. Ohkawa, T. Tatsumi, 2009, Journal of hepatology.

Development of a thrombus in the superior mesenteric artery associated with sequential therapy with tyrosine kinase inhibitors for hepatocellular carcinoma

K. Ohkawa, K. Ikezawa, N. Fukutake, 2019, Clinical Journal of Gastroenterology.

Y. Imai, A. Kasahara, N. Hiramatsu, 2009, Journal of viral hepatitis.

Immunotherapy of murine colon cancer using receptor tyrosine kinase EphA2‐derived peptide‐pulsed dendritic cell vaccines

N. Hayashi, T. Mizushima, K. Ohkawa, 2007, Cancer.

Suppressor of cytokine signaling 1, a newly proposed tumor suppressor gene associated with hepatocellular carcinoma

K. Ohkawa, 2004, Journal of Gastroenterology.

Comprehensive review of pancreatic acinar cell carcinoma: epidemiology, diagnosis, molecular features and treatment

K. Ohkawa, K. Ikezawa, S. Nagata, 2023, Japanese journal of clinical oncology.

Parallel administration of nanoliposomal irinotecan and levo-leucovorin for pancreatic cancer

K. Ohkawa, K. Ikezawa, T. Yagi, 2023, BMC Cancer.

Hepatitis C virus replication and antibody responses toward specific hepatitis C virus proteins

A. Kasahara, H. Fusamoto, T. Kamada, 1994, Hepatology.

Four-year overall survival update from the phase III HIMALAYA study of tremelimumab plus durvalumab in unresectable hepatocellular carcinoma.

T. Crocenzi, Tae-You Kim, Y. Hotko, 2024, Annals of oncology : official journal of the European Society for Medical Oncology.

Safety and Feasibility of Combining On-Demand Selective Locoregional Treatment with First-Line Atezolizumab Plus Bevacizumab for Patients with Unresectable Hepatocellular Carcinoma

K. Ohkawa, Yutaro Abe, T. Ikawa, 2024, Current oncology.

Clinical factors associated with the therapeutic efficacy of atezolizumab plus bevacizumab in patients with unresectable hepatocellular carcinoma: A multicenter prospective observational study

N. Hiramatsu, K. Imanaka, K. Ohkawa, 2024, PloS one.