World's Best Scientists 2026 revealed!

D-Index & Metrics

Medicine

D-Index
84
Citations
26478
World Ranking
15066
National Ranking
70

Tom H. Karlsen publication distribution in Medicine in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Medicine in 2026. The highlighted bar marks where Tom H. Karlsen sits on this spectrum.

101–120 publications: 5 scientists 121–140 publications: 26 scientists 141–160 publications: 73 scientists 161–180 publications: 155 scientists 181–200 publications: 230 scientists 201–220 publications: 363 scientists 221–240 publications: 487 scientists 241–260 publications: 545 scientists 261–280 publications: 722 scientists 281–300 publications: 768 scientists 301–320 publications: 834 scientists 321–340 publications: 895 scientists 341–360 publications: 922 scientists 361–380 publications: 838 scientists 381–400 publications: 861 scientists 401–420 publications: 918 scientists 421–440 publications: 806 scientists 441–460 publications: 771 scientists 461–480 publications: 751 scientists 481–500 publications: 713 scientists 501–520 publications: 617 scientists 521–540 publications: 611 scientists 541–560 publications: 537 scientists 561–580 publications: 504 scientists 581–600 publications: 509 scientists 601–620 publications: 396 scientists 621–640 publications: 386 scientists 641–660 publications: 371 scientists 661–680 publications: 340 scientists 681–700 publications: 336 scientists 701–720 publications: 307 scientists 721–740 publications: 259 scientists 741–760 publications: 230 scientists 761–780 publications: 228 scientists 781–800 publications: 217 scientists 801–820 publications: 204 scientists 821–840 publications: 186 scientists 841–860 publications: 177 scientists 861–880 publications: 155 scientists 881–900 publications: 139 scientists 901–920 publications: 145 scientists 921–940 publications: 116 scientists 941–960 publications: 133 scientists 961–980 publications: 91 scientists 981–1,000 publications: 96 scientists 1,001–1,020 publications: 77 scientists 1,021–1,040 publications: 70 scientists 1,041–1,060 publications: 63 scientists 1,061–1,080 publications: 77 scientists 1,081–1,100 publications: 49 scientists 1,101–1,120 publications: 54 scientists 1,121–1,140 publications: 49 scientists 1,141–1,160 publications: 51 scientists 1,161–1,180 publications: 35 scientists 1,181–1,200 publications: 39 scientists 1,201–1,220 publications: 26 scientists 1,221–1,240 publications: 37 scientists 1,241–1,260 publications: 36 scientists 1,261–1,280 publications: 27 scientists 1,281–1,300 publications: 32 scientists 1,301–1,320 publications: 28 scientists 1,321–1,340 publications: 17 scientists 1,341–1,360 publications: 30 scientists 1,361–1,380 publications: 28 scientists 1,381–1,400 publications: 17 scientists 1,401–1,420 publications: 21 scientists 1,421–1,440 publications: 15 scientists 1,441–1,460 publications: 12 scientists 1,461–1,480 publications: 12 scientists 1,481–1,500 publications: 18 scientists 1,501–1,520 publications: 14 scientists 1,521–1,540 publications: 17 scientists 1,541–1,560 publications: 15 scientists 1,561–1,580 publications: 6 scientists 1,581–1,600 publications: 2 scientists 1,601–1,620 publications: 12 scientists 1,621–1,640 publications: 11 scientists 1,641–1,660 publications: 8 scientists 1,661–1,680 publications: 5 scientists 1,681–1,700 publications: 5 scientists 1,701–1,720 publications: 10 scientists 1,721–1,740 publications: 12 scientists 1,741–1,760 publications: 14 scientists 1,761–1,780 publications: 6 scientists 1,781–1,795 publications: 5 scientists 1,796+ publications: 100 scientists
101 publications 1,796+

This scientist: 327 publications — 23rd percentile

23% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,796 publications or more.

Tom H. Karlsen D-index placement in Medicine in 2026

The chart shows the D-index (discipline H-index) distribution of Medicine scientists ranked by Research.com in 2026. The highlighted bar marks where Tom H. Karlsen sits on this spectrum.

70–71 D-Index: 226 scientists 72–73 D-Index: 391 scientists 74–75 D-Index: 574 scientists 76–77 D-Index: 730 scientists 78–79 D-Index: 891 scientists 80–81 D-Index: 972 scientists 82–83 D-Index: 1,027 scientists 84–85 D-Index: 1,003 scientists 86–87 D-Index: 960 scientists 88–89 D-Index: 970 scientists 90–91 D-Index: 922 scientists 92–93 D-Index: 839 scientists 94–95 D-Index: 808 scientists 96–97 D-Index: 779 scientists 98–99 D-Index: 668 scientists 100–101 D-Index: 611 scientists 102–103 D-Index: 630 scientists 104–105 D-Index: 513 scientists 106–107 D-Index: 541 scientists 108–109 D-Index: 445 scientists 110–111 D-Index: 429 scientists 112–113 D-Index: 400 scientists 114–115 D-Index: 393 scientists 116–117 D-Index: 318 scientists 118–119 D-Index: 302 scientists 120–121 D-Index: 287 scientists 122–123 D-Index: 255 scientists 124–125 D-Index: 256 scientists 126–127 D-Index: 252 scientists 128–129 D-Index: 230 scientists 130–131 D-Index: 179 scientists 132–133 D-Index: 168 scientists 134–135 D-Index: 163 scientists 136–137 D-Index: 159 scientists 138–139 D-Index: 134 scientists 140–141 D-Index: 134 scientists 142–143 D-Index: 118 scientists 144–145 D-Index: 109 scientists 146–147 D-Index: 106 scientists 148–149 D-Index: 74 scientists 150–151 D-Index: 79 scientists 152–153 D-Index: 80 scientists 154–155 D-Index: 87 scientists 156–157 D-Index: 57 scientists 158–159 D-Index: 74 scientists 160–161 D-Index: 69 scientists 162–163 D-Index: 60 scientists 164–165 D-Index: 53 scientists 166–167 D-Index: 39 scientists 168–169 D-Index: 42 scientists 170–171 D-Index: 32 scientists 172–173 D-Index: 39 scientists 174–175 D-Index: 40 scientists 176–177 D-Index: 28 scientists 178–179 D-Index: 19 scientists 180–181 D-Index: 23 scientists 182–183 D-Index: 31 scientists 184–185 D-Index: 18 scientists 186–187 D-Index: 20 scientists 188–189 D-Index: 22 scientists 190–191 D-Index: 13 scientists 192–193 D-Index: 21 scientists 194–195 D-Index: 12 scientists 196–197 D-Index: 12 scientists 198–199 D-Index: 14 scientists 200–201 D-Index: 15 scientists 202–203 D-Index: 13 scientists 204–205 D-Index: 10 scientists 206–207 D-Index: 8 scientists 208–209 D-Index: 4 scientists 210–211 D-Index: 12 scientists 212–213 D-Index: 11 scientists 214–215 D-Index: 10 scientists 216 D-Index: 4 scientists 217+ D-Index: 98 scientists
70 D-Index 217+

This scientist: 84 D-Index — 27th percentile

27% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 217 D-Index or more.

Overview

Tom H. Karlsen is affiliated with Oslo University Hospital in Norway and has a substantial body of research within the field of Medicine, focusing particularly on Hepatology.

The scientist has produced over 230 publications, with a marked concentration of 82 works in Hepatology alone. Other prominent subfields include Epidemiology (51 publications), Surgery (48 publications), Immunology (19 publications), and Pulmonary and Respiratory Medicine (16 publications).

The research topics most frequently addressed involve Liver Diseases and Immunity (126 publications), Liver Disease Diagnosis and Treatment (90 publications), Pediatric Hepatobiliary Diseases and Treatments (34 publications), Cholangiocarcinoma and Gallbladder Cancer Studies (30 publications), Liver Disease and Transplantation (18 publications), Inflammatory Bowel Disease (18 publications), and Gallbladder and Bile Duct Disorders (14 publications).

Among recent papers are:

  • EASL Clinical Practice Guidelines on sclerosing cholangitis, 2022, Journal of Hepatology
  • Whole-genome sequencing of a sporadic primary immunodeficiency cohort, 2020, Nature
  • Development, validation, and prognostic evaluation of a risk score for long-term liver-related outcomes in the general population: a multicohort study, 2023, The Lancet
  • Altered Gut Microbial Metabolism of Essential Nutrients in Primary Sclerosing Cholangitis, 2020, Gastroenterology
  • Downregulation of TGR5 (GPBAR1) in biliary epithelial cells contributes to the pathogenesis of sclerosing cholangitis, 2021, Journal of Hepatology

Frequent coauthors include Johannes R. Hov, Trine Folseraas, Mette Vesterhus, Espen Melum, and Philip N. Newsome. These collaborators have co-published 32, 29, 25, 19, and 17 papers respectively with Karlsen.

Key publication venues for Karlsen's work are:

  • Journal of Hepatology (56 publications)
  • Hepatology (7 publications)
  • bioRxiv (Cold Spring Harbor Laboratory) (4 publications)
  • JHEP Reports (4 publications)
  • Nature Reviews Gastroenterology & Hepatology (3 publications)

Best Publications

  • Host-microbe interactions have shaped the genetic architecture of inflammatory bowel disease

    Luke Jostins;Stephan Ripke;Rinse K Weersma;Richard H Duerr

  • Genomewide Association Study of Severe Covid-19 with Respiratory Failure.

    David Ellinghaus;Frauke Degenhardt;Luis Bujanda;Maria Buti

  • Meta-analysis identifies 29 additional ulcerative colitis risk loci, increasing the number of confirmed associations to 47.

    Carl A. Anderson;Gabrielle Boucher;Charlie W. Lees;Andre Franke

  • EASL Clinical Practice Guidelines: Drug-induced liver injury

    Raúl J. Andrade;Guruprasad P. Aithal;Einar S. Björnsson;Neil Kaplowitz

  • Analysis of five chronic inflammatory diseases identifies 27 new associations and highlights disease-specific patterns at shared loci

    David Ellinghaus;Luke Jostins;Sarah L. Spain;Adrian Cortes

  • The First European Evidence-Based Consensus on Extra-Intestinal Manifestations in Inflammatory Bowel Disease

    Marcus Harbord;Vito Annese;Stephan R. Vavricka;Matthieu Allez

  • Primary sclerosing cholangitis - a comprehensive review.

    Tom H. Karlsen;Tom H. Karlsen;Trine Folseraas;Douglas Thorburn;Mette Vesterhus

  • Sequence variants in IL10, ARPC2 and multiple other loci contribute to ulcerative colitis susceptibility

    Andre Franke;Tobias Balschun;Tom H Karlsen;Jurgita Sventoraityte

  • Primary sclerosing cholangitis

    Gideon M Hirschfield;Tom H Karlsen;Tom H Karlsen;Keith D Lindor;David H Adams

  • Genome-wide association analysis identifies variation in vitamin D receptor and other host factors influencing the gut microbiota

    Jun Wang;Louise B Thingholm;Jurgita Skiecevičienė;Philipp Rausch;Philipp Rausch

  • Replication of signals from recent studies of Crohn's disease identifies previously unknown disease loci for ulcerative colitis.

    Andre Franke;Tobias Balschun;Tom H Karlsen;Jürgen Hedderich

  • Patient Age, Sex, and Inflammatory Bowel Disease Phenotype Associate With Course of Primary Sclerosing Cholangitis

    Tobias J. Weismüller;Tobias J. Weismüller;Palak J. Trivedi;Annika Bergquist;Mohamad Imam;Mohamad Imam

  • Microbiota-dependent metabolite trimethylamine-N-oxide is associated with disease severity and survival of patients with chronic heart failure.

    M. Trøseid;T. Ueland;T. Ueland;J. R. Hov;A. Svardal

  • Genome-wide association study identifies a psoriasis susceptibility locus at TRAF3IP2

    Eva Ellinghaus;David Ellinghaus;Philip E Stuart;Rajan P Nair

  • The gut microbial profile in patients with primary sclerosing cholangitis is distinct from patients with ulcerative colitis without biliary disease and healthy controls

    Martin Kummen;Kristian Holm;Jarl Andreas Anmarkrud;Ståle Nygård;Ståle Nygård

  • Dense genotyping of immune-related disease regions identifies nine new risk loci for primary sclerosing cholangitis

    Jimmy Z Liu;Johannes Roksund Hov;Trine Folseraas;Trine Folseraas;Eva Ellinghaus

  • Genome-Wide Association Analysis in Primary Sclerosing Cholangitis

    Tom H. Karlsen;Andre Franke;Espen Melum;Arthur Kaser

  • Cholangiocytes derived from human induced pluripotent stem cells for disease modeling and drug validation

    Fotios Sampaziotis;Fotios Sampaziotis;Miguel Cardoso de Brito;Pedro Madrigal;Pedro Madrigal;Alessandro Bertero

  • Obese Individuals with and without Type 2 Diabetes Show Different Gut Microbial Functional Capacity and Composition.

    Louise B. Thingholm;Malte C. Rühlemann;Manja Koch;Brie Fuqua

  • Dense genotyping of immune-related disease regions identifies nine new risk loci for primary sclerosing cholangitis

    Jimmy Z. Liu;Johannes Roksund Hov;Trine Folseraas;Eva Ellinghaus

Frequent Co-Authors

Kirsten Muri Boberg
Kirsten Muri Boberg University of Oslo
Andre Franke
Andre Franke Kiel University
Stefan Schreiber
Stefan Schreiber Kiel University
Gideon M. Hirschfield
Gideon M. Hirschfield University Health Network
David Ellinghaus
David Ellinghaus Kiel University
Morten H. Vatn
Morten H. Vatn University of Oslo
Cyriel Y. Ponsioen
Cyriel Y. Ponsioen University of Amsterdam
Rinse K. Weersma
Rinse K. Weersma University Medical Center Groningen
Benedicte A. Lie
Benedicte A. Lie Oslo University Hospital

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Exploring careers in medicine isn’t limited to becoming a doctor. There are many rewarding pathways in healthcare, especially through nursing. For those looking to advance quickly, direct entry online MSN programs allow non-nurses to earn a master's and enter advanced nursing roles in less time.

Affordability is a major consideration for prospective students. Many seek out the cheapest bsn programs to minimize student debt while pursuing a nursing degree. For nurses aiming to move into leadership, teaching, or research, phd in nursing online programs offer flexible, affordable ways to earn an advanced credential.

Some may also be looking for what is the easiest nursing school to get into as a starting point for a healthcare career. With a variety of online options now available, students can find programs that best fit their learning styles, schedules, and budgets—opening doors to diverse, impactful roles in patient care and beyond.

Best Scientists Citing Tom H. Karlsen

Trending Scientists

Recently Published Articles