1
|
Grewal US, Gaddam SJ, Beg MS, Brown TJ. Targeted therapies in advanced biliary malignancies: a clinical review. Expert Rev Anticancer Ther 2024:1-12. [PMID: 39083012 DOI: 10.1080/14737140.2024.2387612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Accepted: 07/30/2024] [Indexed: 08/06/2024]
Abstract
INTRODUCTION Despite several therapeutic advancements, the proportion of patients with advanced biliary tract cancers (BTC) surviving 5 years from diagnosis remains dismal. The increasing recognition of targetable genetic alterations in BTCs has ushered in a new era in the treatment of these patients. Newer therapeutic agents targeting mutations such as isocitrate dehydrogenase (IDH), fibroblastic growth factor receptor (FGFR), human epidermal growth factor receptor (HER), and so on have established a new standard of care for treatment upon progression on frontline therapy in patients with disease harboring these mutations. AREAS COVERED The current review aims to concisely summarize progress with various targeted therapy options for BTC. We also briefly discuss future directions in clinical and translational research for the adoption of a personalized approach for the treatment of unresectable or advanced BTC. EXPERT OPINION Several new agents continue to emerge as feasible treatment options for patients with advanced BTC harboring targetable mutations. There is a growing need to identify mechanisms to conquer primary and acquired resistance to these agents. The identification of potential biomarkers that predict response to targeted therapy may be helpful in adopting a more tailored approach. All patients receiving treatment for advanced BTC should undergo tissue genomic profiling at diagnosis.
Collapse
Affiliation(s)
- Udhayvir S Grewal
- Division of Hematology and Oncology, University of Iowa Hospitals and Clinics, Iowa City, IA, USA
| | - Shiva J Gaddam
- Division of Hematology and Oncology, Department of Medicine, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | | | - Timothy J Brown
- Division of Hematology and Medical Oncology, Department of Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| |
Collapse
|
2
|
Ros-Buxó M, Mauro E, Sauri T, Iserte G, Fuster-Anglada C, Díaz A, Sererols-Viñas L, Affo S, Forner A. Integrating Molecular Insights into Biliary Tract Cancer Management: A Review of Personalized Therapeutic Strategies. Curr Oncol 2024; 31:3615-3629. [PMID: 39057138 PMCID: PMC11275621 DOI: 10.3390/curroncol31070266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 06/17/2024] [Accepted: 06/18/2024] [Indexed: 07/28/2024] Open
Abstract
Biliary tract cancers (BTCs) are rare and aggressive malignancies with an increasing incidence and poor prognosis. The standard systemic treatment for BTCs has evolved to include immune checkpoint inhibitors associated with gemcitabine-cisplatin as first-line therapies. However, survival rates remain low, highlighting the critical need for personalized treatment strategies based on molecular profiling. Currently, significant advancements have been made in the molecular characterization of BTCs, where genetic alterations, such as IDH1 mutations and FGFR2 fusions, provide targets for therapy. Molecular profiling is crucial early in the management process to identify potential candidates for clinical trials and guide treatment strategy. The integration of these molecular insights into clinical practice has allowed for the development of targeted therapies, although many of them are still in the phase 2 trial stage without definitive survival benefits demonstrated in phase 3 trials. This integration of comprehensive molecular profile insights with traditional treatment approaches offers a new horizon in the personalized medicine landscape for BTCs, with the aim of significantly improving patient outcomes through precision oncology.
Collapse
Affiliation(s)
- Mar Ros-Buxó
- School of Medicine, Universitat de Barcelona, 08007 Barcelona, Spain; (M.R.-B.); (T.S.); (A.D.)
| | - Ezequiel Mauro
- School of Medicine, Universitat de Barcelona, 08007 Barcelona, Spain; (M.R.-B.); (T.S.); (A.D.)
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain; (G.I.); (C.F.-A.); (L.S.-V.); (S.A.)
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), 28029 Madrid, Spain
- Barcelona Clinic Liver Cancer (BCLC) Group, Liver Unit, Institut Clínic de Malalties Digestives i Metabòliques (ICMDM), Hospital Clinic Barcelona, 08036 Barcelona, Spain
| | - Tamara Sauri
- School of Medicine, Universitat de Barcelona, 08007 Barcelona, Spain; (M.R.-B.); (T.S.); (A.D.)
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain; (G.I.); (C.F.-A.); (L.S.-V.); (S.A.)
- Barcelona Clinic Liver Cancer (BCLC) Group, Medical Oncology Department, Institut del Càncer i Malalties de la Sang (ICAMS), Hospital Clinic Barcelona, Translational Genomics and Targeted Therapies in Solid Tumors, IDIBAPS, 08036 Barcelona, Spain
| | - Gemma Iserte
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain; (G.I.); (C.F.-A.); (L.S.-V.); (S.A.)
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), 28029 Madrid, Spain
- Barcelona Clinic Liver Cancer (BCLC) Group, Liver Unit, Institut Clínic de Malalties Digestives i Metabòliques (ICMDM), Hospital Clinic Barcelona, 08036 Barcelona, Spain
| | - Carla Fuster-Anglada
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain; (G.I.); (C.F.-A.); (L.S.-V.); (S.A.)
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), 28029 Madrid, Spain
- Barcelona Clinic Liver Cancer (BCLC) Group, Pathology Department, CDB, Hospital Clinic Barcelona, 08036 Barcelona, Spain
| | - Alba Díaz
- School of Medicine, Universitat de Barcelona, 08007 Barcelona, Spain; (M.R.-B.); (T.S.); (A.D.)
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain; (G.I.); (C.F.-A.); (L.S.-V.); (S.A.)
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), 28029 Madrid, Spain
- Barcelona Clinic Liver Cancer (BCLC) Group, Pathology Department, CDB, Hospital Clinic Barcelona, 08036 Barcelona, Spain
| | - Laura Sererols-Viñas
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain; (G.I.); (C.F.-A.); (L.S.-V.); (S.A.)
| | - Silvia Affo
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain; (G.I.); (C.F.-A.); (L.S.-V.); (S.A.)
| | - Alejandro Forner
- School of Medicine, Universitat de Barcelona, 08007 Barcelona, Spain; (M.R.-B.); (T.S.); (A.D.)
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain; (G.I.); (C.F.-A.); (L.S.-V.); (S.A.)
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), 28029 Madrid, Spain
- Barcelona Clinic Liver Cancer (BCLC) Group, Liver Unit, Institut Clínic de Malalties Digestives i Metabòliques (ICMDM), Hospital Clinic Barcelona, 08036 Barcelona, Spain
| |
Collapse
|
3
|
Ramaswamy A, Ostwal V. Reply to N. Okano et al. J Clin Oncol 2024; 42:1727-1728. [PMID: 38471060 DOI: 10.1200/jco.24.00126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 01/19/2024] [Indexed: 03/14/2024] Open
Affiliation(s)
- Anant Ramaswamy
- Anant Ramaswamy, DM, and Vikas Ostwal, DM, Tata Memorial Hospital, Mumbai, India
| | - Vikas Ostwal
- Anant Ramaswamy, DM, and Vikas Ostwal, DM, Tata Memorial Hospital, Mumbai, India
| |
Collapse
|
4
|
Okano N, Mizutani T, Hironaka S. Promising Objective Response Rates and Progression-Free Survival but Modest Overall Survival in the TAB Study. J Clin Oncol 2024; 42:1726-1727. [PMID: 38471055 DOI: 10.1200/jco.23.02726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 01/22/2024] [Indexed: 03/14/2024] Open
Affiliation(s)
- Naohiro Okano
- Naohiro Okano, MD, PhD, Tomonori Mizutani, MD, PhD, and Shuichi Hironaka, MD, PhD, Department of Medical Oncology, Kyorin University Faculty of Medicine, Tokyo, Japan
| | - Tomonori Mizutani
- Naohiro Okano, MD, PhD, Tomonori Mizutani, MD, PhD, and Shuichi Hironaka, MD, PhD, Department of Medical Oncology, Kyorin University Faculty of Medicine, Tokyo, Japan
| | - Shuichi Hironaka
- Naohiro Okano, MD, PhD, Tomonori Mizutani, MD, PhD, and Shuichi Hironaka, MD, PhD, Department of Medical Oncology, Kyorin University Faculty of Medicine, Tokyo, Japan
| |
Collapse
|
5
|
Oprescu Macovei AM, Venter DP, Makkai GG, Valcea S, Venter MD, Tulin A, Stefan M, Constantin O. Options in Targeted Therapy for Advanced Cholangiocarcinoma: A 2024 Update. Cureus 2024; 16:e59793. [PMID: 38846220 PMCID: PMC11154844 DOI: 10.7759/cureus.59793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/07/2024] [Indexed: 06/09/2024] Open
Abstract
Bile duct carcinomas have a different prognosis and genetic profile depending on their location; intrahepatic/extrahepatic or at the level of the gallbladder. Although in recent years there have been important advances in first-line therapy, second-line therapy in cholangiocarcinoma does not currently have a standard. Therefore at this level, there is an acute need for personalized treatment. The present article is a narrative review that aims to list the newest targeted therapeutic options for this type of cancer, based on identified genetic alterations. The literature selected for analysis includes phase 2 or 3 studies with targeted therapy in this disease and original articles no older than three years that describe the prevalence of the most common gene alterations in this type of cancer. PubMed/Medline, Scopus, and Clarivate-Web of Science databases were searched and keywords such as "cholangiocarcinoma," "biliary cancer," "targeted therapy," "gene amplifications," and "mutations" were used. This narrative review was designed taking into account the SANRA (Scale for the Assessment of Narrative Review Articles) criteria. The conclusions lead to the fact that next-generation sequencing testing is of particular usefulness in cholangiocarcinoma. Bile duct cancers are rich in targetable genetic alterations, and their treatment is in constant change, although much of the current data comes from phase II studies. There is a great need for the current options to be analyzed in phase III studies. Hence, the need of the oncological community to stay informed about targeted treatment options for cholangiocarcinoma is supported by the present article.
Collapse
Affiliation(s)
| | - Dana Paula Venter
- Pediatric Surgery, Grigore Alexandrescu Emergency Pediatric Hospital, Bucharest, ROU
| | | | - Sebastian Valcea
- General Surgery, Floreasca Emergency Clinical Hospital, Bucharest, ROU
| | - Mircea Dan Venter
- General Surgery, Floreasca Emergency Clinical Hospital, Bucharest, ROU
| | - Adrian Tulin
- General Surgery, Agrippa Ionescu Emergency Clinical Hospital, Bucharest, ROU
| | - Mihai Stefan
- General Surgery, Floreasca Emergency Clinical Hospital, Bucharest, ROU
| | | |
Collapse
|
6
|
Heumann P, Albert A, Gülow K, Tümen D, Müller M, Kandulski A. Current and Future Therapeutic Targets for Directed Molecular Therapies in Cholangiocarcinoma. Cancers (Basel) 2024; 16:1690. [PMID: 38730642 PMCID: PMC11083102 DOI: 10.3390/cancers16091690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/17/2024] [Accepted: 04/21/2024] [Indexed: 05/13/2024] Open
Abstract
We conducted a comprehensive review of the current literature of published data, clinical trials (MEDLINE; ncbi.pubmed.com), congress contributions (asco.org; esmo.org), and active recruiting clinical trains (clinicaltrial.gov) on targeted therapies in cholangiocarcinoma. Palliative treatment regimens were analyzed as well as preoperative and perioperative treatment options. We summarized the current knowledge for each mutation and molecular pathway that is or has been under clinical evaluation and discussed the results on the background of current treatment guidelines. We established and recommended targeted treatment options that already exist for second-line settings, including IDH-, BRAF-, and NTRK-mutated tumors, as well as for FGFR2 fusion, HER2/neu-overexpression, and microsatellite instable tumors. Other options for targeted treatment include EGFR- or VEGF-dependent pathways, which are known to be overexpressed or dysregulated in this cancer type and are currently under clinical investigation. Targeted therapy in CCA is a hallmark of individualized medicine as these therapies aim to specifically block pathways that promote cancer cell growth and survival, leading to tumor shrinkage and improved patient outcomes based on the molecular profile of the tumor.
Collapse
Affiliation(s)
- Philipp Heumann
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology, and Infectious Diseases University Hospital Regensburg Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | | | | | | | | | - Arne Kandulski
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology, and Infectious Diseases University Hospital Regensburg Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| |
Collapse
|
7
|
Gilbert TM, Randle L, Quinn M, McGreevy O, O'leary L, Young R, Diaz-Neito R, Jones RP, Greenhalf B, Goldring C, Fenwick S, Malik H, Palmer DH. Molecular biology of cholangiocarcinoma and its implications for targeted therapy in patient management. EUROPEAN JOURNAL OF SURGICAL ONCOLOGY 2024:108352. [PMID: 38653586 DOI: 10.1016/j.ejso.2024.108352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Accepted: 04/16/2024] [Indexed: 04/25/2024]
Abstract
Cholangiocarcinoma (CCA) remains a devastating malignancy and a significant challenge to treat. The majority of CCA patients are diagnosed at an advanced stage, making the disease incurable in most cases. The advent of high-throughput genetic sequencing has significantly improved our understanding of the molecular biology underpinning cancer. The identification of 'druggable' genetic aberrations and the development of novel targeted therapies against them is opening up new treatment strategies. Currently, 3 targeted therapies are approved for use in CCA; Ivosidenib in patients with IDH1 mutations and Infigratinib/Pemigatinib in those with FGFR2 fusions. As our understanding of the biology underpinning CCA continues to improve it is highly likely that additional targeted therapies will become available in the near future. This is important, as it is thought up to 40 % of CCA patients harbour a potentially actionable mutation. In this review we provide an overview of the molecular pathogenesis of CCA and highlight currently available and potential future targeted treatments.
Collapse
Affiliation(s)
- T M Gilbert
- Hepatobiliary Surgery, Liverpool University Hospitals NHS FT, Liverpool, UK; Department of Pharmacology and Therapeutics, Institute of Systems Integrative and Molecular Biology, University of Liverpool, Liverpool, UK.
| | - L Randle
- Department of Pharmacology and Therapeutics, Institute of Systems Integrative and Molecular Biology, University of Liverpool, Liverpool, UK
| | - M Quinn
- Hepatobiliary Surgery, Liverpool University Hospitals NHS FT, Liverpool, UK
| | - O McGreevy
- Department of Pharmacology and Therapeutics, Institute of Systems Integrative and Molecular Biology, University of Liverpool, Liverpool, UK
| | - L O'leary
- Hepatobiliary Surgery, Liverpool University Hospitals NHS FT, Liverpool, UK
| | - R Young
- Hepatobiliary Surgery, Liverpool University Hospitals NHS FT, Liverpool, UK; Department of Pharmacology and Therapeutics, Institute of Systems Integrative and Molecular Biology, University of Liverpool, Liverpool, UK
| | - R Diaz-Neito
- Hepatobiliary Surgery, Liverpool University Hospitals NHS FT, Liverpool, UK
| | - R P Jones
- Hepatobiliary Surgery, Liverpool University Hospitals NHS FT, Liverpool, UK; Department of Pharmacology and Therapeutics, Institute of Systems Integrative and Molecular Biology, University of Liverpool, Liverpool, UK
| | - B Greenhalf
- Liverpool Experimental Cancer Medicines Centre, University of Liverpool, Liverpool, UK
| | - C Goldring
- Department of Pharmacology and Therapeutics, Institute of Systems Integrative and Molecular Biology, University of Liverpool, Liverpool, UK
| | - S Fenwick
- Hepatobiliary Surgery, Liverpool University Hospitals NHS FT, Liverpool, UK
| | - H Malik
- Hepatobiliary Surgery, Liverpool University Hospitals NHS FT, Liverpool, UK
| | - D H Palmer
- Clatterbridge Cancer Centre, Liverpool, UK; Liverpool Experimental Cancer Medicines Centre, University of Liverpool, Liverpool, UK
| |
Collapse
|
8
|
Ten Haaft BH, Pedregal M, Prato J, Klümpen HJ, Moreno V, Lamarca A. Revolutionizing anti-HER2 therapies for extrahepatic cholangiocarcinoma and gallbladder cancer: Current advancements and future perspectives. Eur J Cancer 2024; 199:113564. [PMID: 38266541 DOI: 10.1016/j.ejca.2024.113564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/10/2024] [Accepted: 01/15/2024] [Indexed: 01/26/2024]
Abstract
Biliary tract cancers (BTCs) encompass a heterogeneous group of rare tumors, including intrahepatic cholangiocarcinoma (iCCA), extrahepatic cholangiocarcinoma (eCCA), gallbladder cancer (GBC) and ampullary cancer (AC). The present first-line palliative treatment regimen comprises gemcitabine and cisplatin in combination with immunotherapy based on two randomized controlled studies. Despite the thorough investigation of these palliative treatments, long-term survival remains low. Moving beyond conventional chemotherapies and immunotherapies, the realm of precision medicine has demonstrated remarkable efficacy in malignancies such as breast and gastric cancers, characterized by notable HER2 overexpression rates. In the context of biliary tract cancer, significant HER2 alterations are observed, particularly within eCCA and GBC, heightening the interest in precision medicine. Various anti-HER2 therapies, including trastuzumab, pertuzumab, trastuzumab-deruxtecan, zanidatamab and neratinib, have undergone investigation. The objective of this review is to summarize the current evidence and outline future directions of targeted HER2 treatment therapy in patients with biliary tract tumors, specially extrahepatic cholangiocarcinoma and gallbladder cancer.
Collapse
Affiliation(s)
- Britte Hea Ten Haaft
- Amsterdam UMC, location University of Amsterdam, Department of Surgery, Amsterdam, the Netherlands; Cancer Center Amsterdam, the Netherlands
| | - Manuel Pedregal
- START Madrid-FJD Phase I Unit, Department of Medical Oncology, Fundación Jiménez Díaz University Hospital, Madrid Spain
| | - Javier Prato
- START Madrid-FJD Phase I Unit, Department of Medical Oncology, Fundación Jiménez Díaz University Hospital, Madrid Spain
| | - Heinz-Josef Klümpen
- Cancer Center Amsterdam, the Netherlands; Amsterdam UMC, location University of Amsterdam, Department of Medical Oncology, Amsterdam, the Netherlands
| | - Victor Moreno
- START Madrid-FJD Phase I Unit, Department of Medical Oncology, Fundación Jiménez Díaz University Hospital, Madrid Spain
| | - Angela Lamarca
- Department of Oncology, OncoHealth Institute, Fundación Jiménez Díaz University Hospital, Madrid Spain; Department of Medical Oncology, The Christie NHS Foundation Trust, Manchester, United Kingdom.
| |
Collapse
|
9
|
Mie T, Sasaki T, Okamoto T, Furukawa T, Takeda T, Kasuga A, Ozaka M, Sasahira N. Current Status of Targeted Therapy for Biliary Tract Cancer in the Era of Precision Medicine. Cancers (Basel) 2024; 16:879. [PMID: 38473240 DOI: 10.3390/cancers16050879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 02/14/2024] [Accepted: 02/20/2024] [Indexed: 03/14/2024] Open
Abstract
First-line chemotherapy has been established for advanced biliary tract cancer (BTC). However, few treatment options are available as second-line treatment. Advances in comprehensive genomic analysis revealed that nearly half of patients with BTC harbor targetable genetic alterations such as fibroblast growth factor receptor (FGFR), isocitrate dehydrogenase (IDH), BRAF, human epidermal growth factor receptor 2 (HER2), microsatellite instability (MSI)-high, neurotrophic tropomyosin receptor kinase (NTRK), rearranged during transfection (RET), and poly (adenosine diphosphate-ribose) polymerase (PARP). This review summarizes currently available options in precision medicine and clinical trials for patients with advanced BTC.
Collapse
Affiliation(s)
- Takafumi Mie
- Department of Hepato-Biliary-Pancreatic Medicine, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo 135-8550, Japan
| | - Takashi Sasaki
- Department of Hepato-Biliary-Pancreatic Medicine, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo 135-8550, Japan
| | - Takeshi Okamoto
- Department of Hepato-Biliary-Pancreatic Medicine, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo 135-8550, Japan
| | - Takaaki Furukawa
- Department of Hepato-Biliary-Pancreatic Medicine, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo 135-8550, Japan
| | - Tsuyoshi Takeda
- Department of Hepato-Biliary-Pancreatic Medicine, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo 135-8550, Japan
| | - Akiyoshi Kasuga
- Department of Hepato-Biliary-Pancreatic Medicine, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo 135-8550, Japan
| | - Masato Ozaka
- Department of Hepato-Biliary-Pancreatic Medicine, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo 135-8550, Japan
| | - Naoki Sasahira
- Department of Hepato-Biliary-Pancreatic Medicine, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo 135-8550, Japan
| |
Collapse
|