Roger W. Chapman

18.7k citations

186 papers · 9.9k · 3 hit papers · h-index 53

Impact in

Hepatology top 0.05%
- Liver Diseases and Immunity
- Hepatitis C virus research
Epidemiology top 0.2%
- Liver Disease Diagnosis and Treatment

Papers in

Hepatology 142
- Liver Diseases and Immunity 135
Epidemiology 94
- Liver Disease Diagnosis and Treatment 81

Co-authors: K A Fleming (33 shared papers)Kirsten Muri Boberg (7 shared papers)Sheila Sherlock (8 shared papers)Paul Klenerman (7 shared papers)Gregory J. Gores (2 shared papers)Johan Fevery (2 shared papers)David M. Nagorney (1 shared paper)Anthony N. Kalloo (1 shared paper)
Journals: Hepatology (21 papers)Gastroenterology (17 papers)Gut (16 papers)Journal of Hepatology (16 papers)Current Opinion in Gastroenterology (9 papers)
Partner nations: United Kingdom United States Sweden

In The Last Decade

Roger W. Chapman

179 papers receiving 9.6k citations

Roger W. Chapman's Hit Papers

align trajectories log scale

Diagnosis and Management of Primary Sclerosing Cholangitis 2009 · 843 citations

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if any of the following hold:

it has ≥500 total citations;
it reaches ≥1.5× the top-1% citation threshold for papers in the same subfield and year (the threshold is the minimum needed to enter the top 1%, not the average within it);
it reaches the top citation threshold in at least one of its specific research topics.

2009 Hepatology
2000 The Journal of Experimental Medicine
1980 Gut

Peers

Countries citing papers authored by Roger W. Chapman

Since Specialization

Citations

This map shows the geographic impact of Roger W. Chapman's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Roger W. Chapman with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Roger W. Chapman more than expected).

Fields of papers citing papers by Roger W. Chapman

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Roger W. Chapman. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Roger W. Chapman. The network helps show where Roger W. Chapman may publish in the future.

Co-authors

The 25 scholars most cited alongside Roger W. Chapman, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Roger W. Chapman Line = papers co-authored together Roger W. Chapman links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 186 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Analysis of Successful Immune Responses in Persons Infected with Hepatitis C Virus The Journal of Experimental Medicine ·Franziska Lechner, David Wong, P. Rod Dunbar, Roger W. Chapman, Raymond T. Chung, Paul B. Dohrenwend, Gregory K. Robbins, Rodney Phillips, Paul Klenerman, Bruce D. Walker Hit paper breakdown →	2000	1057
2	Diagnosis and Management of Primary Sclerosing Cholangitis Hepatology ·Roger W. Chapman, Johan Fevery, Anthony N. Kalloo, David M. Nagorney, Kirsten Muri Boberg, Benjamin L. Shneider, Gregory J. Gores Hit paper breakdown →	2009	843
3	Primary sclerosing cholangitis: a review of its clinical features, cholangiography, and hepatic histology. Gut ·Roger W. Chapman, Bengt Arborgh, Jonathan M. Rhodes, J.A. Summerfield, Robert Dick, Peter J. Scheuer, Sheila Sherlock Hit paper breakdown →	1980	580
4	Overlap syndromes: The International Autoimmune Hepatitis Group (IAIHG) position statement on a controversial issue Journal of Hepatology ·Kirsten Muri Boberg, Roger W. Chapman, Gideon M. Hirschfield, Ansgar W. Lohse, Michael P. Manns, Erik Schrumpf	2010	344
5	A preliminary trial of high-dose ursodeoxycholic acid in primary sclerosing cholangitis Gastroenterology ·Stephen Mitchell, D Bansi, Nicholas Hunt, Klaus von Bergmann, K A Fleming, Roger W. Chapman	2001	227
6	A randomized trial of obeticholic acid monotherapy in patients with primary biliary cholangitis Hepatology ·Kris V. Kowdley, Velimir A. Luketic, Roger W. Chapman, Gideon M. Hirschfield, Raoul Poupon, Christoph Schramm, Catherine Vincent, Christian Rust, Albert Parés, Andrew L. Mason, Hanns–Ulrich Marschall, Д. А. Шапиро, Luciano Adorini, Cathi Sciacca, T. Beecher-Jones, O. Böhm, Richard Pencek, David Jones, (unknown)	2017	221
7	Primary sclerosing cholangitis: Refinement and validation of survival models Gastroenterology ·E. Rolland Dickson, Paul A. Murtaugh, Russell H. Wiesner, Patricia M. Grambsch, Thomas R. Fleming, Jürgen Ludwig, Nicholas F. LaRusso, Michael Malinchoc, Roger W. Chapman, Marshall M. Kaplan, Willis C. Maddrey, Roger Williams, Mark Farrant, Alice Langworthy	1992	211
8	Association of primary sclerosing cholangitis with HLA-B8. Gut ·Roger W. Chapman, Z. Varghese, R Gaul, Gayatri Patel, N Kokinon, Sheila Sherlock	1983	208
9	The Natural History of Small-Duct Primary Sclerosing Cholangitis Gastroenterology ·Einar S. Björnsson, Rolf Olsson, Annika Bergquist, Stefan Lindgren, Barbara Braden, Roger W. Chapman, Kirsten Muri Boberg, Paul Angulo	2008	181
10	Hepatic iron stores and markers of iron overload in alcoholics and patients with idiopathic hemochromatosis Digestive Diseases and Sciences ·Roger W. Chapman, Marsha Y. Morgan, M Laulicht, A. V. Hoffbrand, Sheila Sherlock	1982	174
11	Risk factors for biliary tract carcinogenesis Annals of Oncology ·Roger W. Chapman	1999	167
12	Type 1 Autoimmune Pancreatitis and IgG4-Related Sclerosing Cholangitis Is Associated With Extrapancreatic Organ Failure, Malignancy, and Mortality in a Prospective UK Cohort The American Journal of Gastroenterology ·Matthew T. Huggett, Emma Culver, Manoj Kumar, Jacob Hurst, Manuel Rodriguez‐Justo, Mike Chapman, Gavin Johnson, Stephen P. Pereira, Roger W. Chapman, George Webster, Eleanor Barnes	2014	161
13	Simtuzumab for Primary Sclerosing Cholangitis: Phase 2 Study Results With Insights on the Natural History of the Disease Hepatology ·Andrew J. Muir, Cynthia Levy, Harry L.A. Janssen, Aldo J. Montaño‐Loza, Mitchell L. Shiffman, Stephen H. Caldwell, Velimir A. Luketic, Dora Ding, Catherine Jia, B. Mccolgan, John G. McHutchison, G. Mani Subramanian, Robert P. Myers, Michael P. Manns, Roger W. Chapman, Nezam H. Afdhal, Zachary Goodman, Bertus Eksteen, Christopher L. Bowlus, (unknown)	2018	144
14	Improvement of serum alkaline phosphatase to <1.5 upper limit of normal predicts better outcome and reduced risk of cholangiocarcinoma in primary sclerosing cholangitis Journal of Hepatology ·Said Al Mamari, Jelena Djordjevic, John Halliday, Roger W. Chapman	2012	142
15	Elevated Serum IgG4 Levels in Diagnosis, Treatment Response, Organ Involvement, and Relapse in a Prospective IgG4-Related Disease UK Cohort The American Journal of Gastroenterology ·Emma Culver, Ross Sadler, Dawn B. Simpson, Tamsin Cargill, Mateusz Makuch, Adrian C Bateman, Anthony Ellis, Jane Collier, Roger W. Chapman, Paul Klenerman, Eleanor Barnes, Berne Ferry	2016	133
16	Serum Immunoglobulin G4 and Immunoglobulin G1 for Distinguishing Immunoglobulin G4-Associated Cholangitis From Primary Sclerosing Cholangitis Hepatology ·Kirsten Boonstra, Emma Culver, Lucas J. Maillette de Buy Wenniger, Marianne J. Van Heerde, Karel J. van Erpecum, Alexander C. Poen, Karin M.J. van Nieuwkerk, Marcel Spanier, Ben Witteman, Hans A.R.E. Tuynman, Nan van Geloven, Henk van Buuren, Roger W. Chapman, Eleanor Barnes, Ulrich Beuers, Cyriel Y. Ponsioen	2013	125
17	Evaluation of Serologic Disease Markers in a Population-Based Cohort of Patients with Ulcerative Colitis and Crohn's Disease Inflammatory Bowel Diseases ·William J. Sandborn, Edward V. Loftus, Jean Frédéric Colombel, K A Fleming, Frank Seibold, Henry A. Homburger, Boualem Sendid, Roger W. Chapman, William J. Tremaine, Debra K. Kaul, Jeannie S. Wallace, William S. Harmsen, Alan R. Zinsmeister, Stephan R. Targan	2001	123
18	Surrogate endpoints for clinical trials in primary sclerosing cholangitis: Review and results from an International PSC Study Group consensus process Hepatology ·Cyriel Y. Ponsioen, Roger W. Chapman, Olivier Chazouillères, Gideon M. Hirschfield, Tom H. Karlsen, Ansgar W. Lohse, Massimo Pinzani, Erik Schrumpf, Michael Trauner, Gregory J. Gores	2015	123
19	Quantification and localisation of FOXP3+ T lymphocytes and relation to hepatic inflammation during chronic HCV infection Journal of Hepatology ·Scott M. Ward, Bridget C. Fox, Philip J. Brown, Joy Worthington, Stephen B. Fox, Roger W. Chapman, K A Fleming, Alison H. Banham, Paul Klenerman	2007	122
20	HLA class II haplotypes in primary sclerosing cholangitis patients from five European populations Tissue Antigens ·Anne Spurkland, S. Saarinen, Kirsten Muri Boberg, S.A. Mitchell, Ulrika Broomé, Llorenç Caballería, Emilio Ciusani, Roger W. Chapman, Guadalupe Ercilla, O. Fausa, Ingebjørg Knutsen, Albert Parés, F. Rosina, Olle Olerup, Erik Thorsby, E. Schrumpf	1999	121

About Roger W. Chapman

Roger W. Chapman is a scholar working on Hepatology, Epidemiology, Surgery, Pulmonary and Respiratory Medicine and Rheumatology, having authored 186 papers that have together received 9.9k indexed citations. Recurring topics across this work include Liver Diseases and Immunity (135 papers), Liver Disease Diagnosis and Treatment (81 papers), Gallbladder and Bile Duct Disorders (48 papers), Pediatric Hepatobiliary Diseases and Treatments (30 papers), Inflammatory Bowel Disease (22 papers), Celiac Disease Research and Management (21 papers), IgG4-Related and Inflammatory Diseases (16 papers) and Systemic Lupus Erythematosus Research (15 papers). The work is most often cited by research in Hepatology (6.6k citations), Epidemiology (5.1k citations), Gastroenterology (528 citations), Rheumatology (1.4k citations) and Surgery (4.0k citations). Roger W. Chapman has collaborated with scholars based in United Kingdom, United States and Sweden. Frequent co-authors include K A Fleming, Kirsten Muri Boberg, Sheila Sherlock, Paul Klenerman, Gregory J. Gores, Johan Fevery, David M. Nagorney, Anthony N. Kalloo, Benjamin L. Shneider and Rodney Phillips. Their work appears in journals such as Hepatology, Gastroenterology, Gut, Journal of Hepatology and Current Opinion in Gastroenterology.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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Roger W. Chapman

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Roger W. Chapman

Roger W. Chapman's Hit Papers

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All Works

About Roger W. Chapman

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