World's Best Scientists 2026 revealed!
Lennart Hammarström

Lennart Hammarström

D-Index & Metrics

Immunology

D-Index
100
Citations
34150
World Ranking
730
National Ranking
11

Medicine

D-Index
100
Citations
34253
World Ranking
8317
National Ranking
169

Lennart Hammarström publication distribution in Immunology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Immunology in 2026. The highlighted bar marks where Lennart Hammarström sits on this spectrum.

62–71 publications: 9 scientists 72–81 publications: 23 scientists 82–91 publications: 40 scientists 92–101 publications: 72 scientists 102–111 publications: 86 scientists 112–121 publications: 108 scientists 122–131 publications: 150 scientists 132–141 publications: 160 scientists 142–151 publications: 159 scientists 152–161 publications: 189 scientists 162–171 publications: 166 scientists 172–181 publications: 181 scientists 182–191 publications: 188 scientists 192–201 publications: 187 scientists 202–211 publications: 178 scientists 212–221 publications: 158 scientists 222–231 publications: 168 scientists 232–241 publications: 159 scientists 242–251 publications: 160 scientists 252–261 publications: 148 scientists 262–271 publications: 116 scientists 272–281 publications: 125 scientists 282–291 publications: 115 scientists 292–301 publications: 111 scientists 302–311 publications: 95 scientists 312–321 publications: 97 scientists 322–331 publications: 97 scientists 332–341 publications: 99 scientists 342–351 publications: 96 scientists 352–361 publications: 68 scientists 362–371 publications: 76 scientists 372–381 publications: 71 scientists 382–391 publications: 71 scientists 392–401 publications: 62 scientists 402–411 publications: 54 scientists 412–421 publications: 41 scientists 422–431 publications: 63 scientists 432–441 publications: 53 scientists 442–451 publications: 31 scientists 452–461 publications: 42 scientists 462–471 publications: 40 scientists 472–481 publications: 29 scientists 482–491 publications: 34 scientists 492–501 publications: 30 scientists 502–511 publications: 23 scientists 512–521 publications: 41 scientists 522–531 publications: 29 scientists 532–541 publications: 28 scientists 542–551 publications: 16 scientists 552–561 publications: 18 scientists 562–571 publications: 18 scientists 572–581 publications: 17 scientists 582–591 publications: 17 scientists 592–601 publications: 17 scientists 602–611 publications: 19 scientists 612–621 publications: 13 scientists 622–631 publications: 12 scientists 632–641 publications: 11 scientists 642–651 publications: 16 scientists 652–661 publications: 9 scientists 662–671 publications: 5 scientists 672–681 publications: 13 scientists 682–691 publications: 12 scientists 692–701 publications: 6 scientists 702–711 publications: 6 scientists 712–721 publications: 9 scientists 722–731 publications: 9 scientists 732–741 publications: 6 scientists 742–751 publications: 11 scientists 752–761 publications: 10 scientists 762–771 publications: 7 scientists 772–781 publications: 12 scientists 782–791 publications: 7 scientists 792–801 publications: 5 scientists 802–806 publications: 1 scientists 807+ publications: 100 scientists
62 publications 807+

This scientist: 421 publications — 83rd percentile

83% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 807 publications or more.

Lennart Hammarström D-index placement in Immunology in 2026

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

40–41 D-Index: 28 scientists 42–43 D-Index: 91 scientists 44–45 D-Index: 157 scientists 46–47 D-Index: 192 scientists 48–49 D-Index: 175 scientists 50–51 D-Index: 188 scientists 52–53 D-Index: 177 scientists 54–55 D-Index: 155 scientists 56–57 D-Index: 194 scientists 58–59 D-Index: 201 scientists 60–61 D-Index: 197 scientists 62–63 D-Index: 201 scientists 64–65 D-Index: 173 scientists 66–67 D-Index: 167 scientists 68–69 D-Index: 172 scientists 70–71 D-Index: 199 scientists 72–73 D-Index: 184 scientists 74–75 D-Index: 133 scientists 76–77 D-Index: 162 scientists 78–79 D-Index: 127 scientists 80–81 D-Index: 121 scientists 82–83 D-Index: 125 scientists 84–85 D-Index: 121 scientists 86–87 D-Index: 102 scientists 88–89 D-Index: 96 scientists 90–91 D-Index: 75 scientists 92–93 D-Index: 72 scientists 94–95 D-Index: 74 scientists 96–97 D-Index: 66 scientists 98–99 D-Index: 68 scientists 100–101 D-Index: 49 scientists 102–103 D-Index: 60 scientists 104–105 D-Index: 54 scientists 106–107 D-Index: 36 scientists 108–109 D-Index: 23 scientists 110–111 D-Index: 52 scientists 112–113 D-Index: 41 scientists 114–115 D-Index: 34 scientists 116–117 D-Index: 25 scientists 118–119 D-Index: 28 scientists 120–121 D-Index: 11 scientists 122–123 D-Index: 20 scientists 124–125 D-Index: 27 scientists 126–127 D-Index: 19 scientists 128–129 D-Index: 20 scientists 130–131 D-Index: 16 scientists 132–133 D-Index: 17 scientists 134–135 D-Index: 14 scientists 136–137 D-Index: 15 scientists 138–139 D-Index: 9 scientists 140–141 D-Index: 11 scientists 142–143 D-Index: 9 scientists 144–145 D-Index: 9 scientists 146–147 D-Index: 7 scientists 148–149 D-Index: 7 scientists 150–151 D-Index: 7 scientists 152–153 D-Index: 5 scientists 154–155 D-Index: 8 scientists 156 D-Index: 6 scientists 157+ D-Index: 96 scientists
40 D-Index 157+

This scientist: 100 D-Index — 86th percentile

86% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 157 D-Index or more.

Overview

Lennart Hammarström is affiliated with the Karolinska Institute in Sweden and has a substantial body of work primarily focused on medicine, immunology, and molecular biology. Their research spans critical areas such as immunodeficiency, autoimmune disorders, infectious diseases, and the genetic factors influencing immune responses.

The scientist's research has contributed notably to the understanding of COVID-19, particularly the immune mechanisms involved. Some recent papers by their group include:

  • Autoantibodies neutralizing type I IFNs are present in ~4% of uninfected individuals over 70 years old and account for ~20% of COVID-19 deaths (2021, Science Immunology)
  • X-linked recessive TLR7 deficiency in ~1% of men under 60 years old with life-threatening COVID-19 (2021, Science Immunology)
  • Human genetic and immunological determinants of critical COVID-19 pneumonia (2022, Nature)
  • Persistence of SARS-CoV-2-specific B and T cell responses in convalescent COVID-19 patients 6-8 months after the infection (2021, Med)
  • The risk of COVID-19 death is much greater and age dependent with type I IFN autoantibodies (2022, Proceedings of the National Academy of Sciences)

Frequent co-authors in their research include:

  • Qiang Pan-Hammarström
  • Hassan Abolhassani
  • Harold Marcotte
  • Likun Du
  • Fanglei Zuo

Hammarström's work is often published in notable venues such as:

  • bioRxiv (Cold Spring Harbor Laboratory)
  • Journal of Clinical Immunology
  • Journal of Allergy and Clinical Immunology
  • The Journal of Experimental Medicine
  • Frontiers in Immunology

Their research covers several interconnected scientific disciplines. The main fields of study include:

  • Medicine
  • Immunology and Microbiology
  • Biochemistry, Genetics and Molecular Biology

Within these broader areas, subfields of focus include:

  • Immunology
  • Infectious Diseases
  • Genetics
  • Epidemiology
  • Molecular Biology

The topics of research reflect an emphasis on immune system function and disease:

  • Immunodeficiency and Autoimmune Disorders
  • SARS-CoV-2 and COVID-19 Research
  • Blood disorders and treatments
  • COVID-19 Clinical Research Studies
  • Immune Cell Function and Interaction
  • T-cell and B-cell Immunology
  • Respiratory viral infections research

Best Publications

  • The gene involved in X-linked agammaglobulinaemia is a member of the src family of protein-tyrosine kinases

    Vetrie D;Vorechovský I;Sideras P;Sideras P;Holland J

  • Helicobacter pylori SabA adhesin in persistent infection and chronic inflammation.

    Jafar Mahdavi;Berit Sondén;Martina Hurtig;Farzad O. Olfat;Farzad O. Olfat

  • Common variable immunodeficiency disorders: division into distinct clinical phenotypes

    Helen Chapel;Mary Lucas;Martin Lee;Janne Bjorkander

  • International consensus document (icon): common variable immunodeficiency disorders

    Francisco A. Bonilla;Isil Barlan;Helen Chapel;Beatriz Tavares Costa-Carvalho

  • Mutations in TNFRSF13B encoding TACI are associated with common variable immunodeficiency in humans

    U Salzer;H M Chapel;A D B Webster;Q Pan-Hammarström

  • Clinical spectrum of X-linked hyper-IgM syndrome

    Jacov Levy;Teresa Espanol-Boren;Carolin Thomas;Alain Fischer

  • Primary Immunodeficiency Diseases: An Update on the Classification from the International Union of Immunological Societies Expert Committee for Primary Immunodeficiency

    Waleed Al-Herz;Aziz Bousfiha;Jean-Laurent Casanova;Jean-Laurent Casanova;Helen Chapel

  • Primary immunodeficiency diseases: An update from the International Union of Immunological Societies Primary Immunodeficiency Diseases Classification Committee

    Raif S. Geha;Luigi D. Notarangelo;Jean Laurent Casanova;Helen Chapel

  • Deleterious Mutations in LRBA Are Associated with a Syndrome of Immune Deficiency and Autoimmunity

    Gabriela Lopez-Herrera;Giacomo Tampella;Qiang Pan-Hammarström;Peer Herholz

  • Selective IgA deficiency (SIgAD) and common variable immunodeficiency (CVID)

    L Hammarström;I Vorechovsky;D Webster

  • Oral lactobacilli in chronic periodontitis and periodontal health: species composition and antimicrobial activity.

    P. Koll-Klais;R. Mandar;E. Leibur;H. Marcotte

  • B-cell activating factor receptor deficiency is associated with an adult-onset antibody deficiency syndrome in humans

    Klaus Warnatz;Ulrich Salzer;Marta Rizzi;Beate Fischer

  • Assessment of the cPAS-based BGISEQ-500 platform for metagenomic sequencing

    Chao Fang;Huanzi Zhong;Yuxiang Lin;Bing Chen

  • Interleukin 4 induces synthesis of IgE and IgG4 in human B cells.

    Mats Lundgren;Ulla Persson;Ulla Persson;Per Larsson;Carl Magnusson

  • Mutations in STAT3 and diagnostic guidelines for hyper-IgE syndrome

    Cristina Woellner;E. Michael Gertz;Alejandro A. Schäffer;Macarena Lagos

  • Cancer risk among patients with IgA deficiency or common variable immunodeficiency and their relatives: a combined Danish and Swedish study.

    Lene Mellemkjær;L. Hammarström;V. Andersen;J. Yuen

  • Human TYK2 deficiency: Mycobacterial and viral infections without hyper-IgE syndrome

    Alexandra Y. Kreins;Alexandra Y. Kreins;Michael J. Ciancanelli;Satoshi Okada;Xiao Fei Kong

  • Expression of Bruton's agammaglobulinemia tyrosine kinase gene, BTK, is selectively down-regulated in T lymphocytes and plasma cells.

    C I Smith;B Baskin;P Humire-Greiff;J N Zhou

  • Subcutaneous immunoglobulin replacement in patients with primary antibody deficiencies: safety and costs

    A.Gardulf Rn;L Hammarström;R Gustafson;T Nyström

  • Reexamining the role of TACI coding variants in common variable immunodeficiency and selective IgA deficiency.

    Qiang Pan-Hammarström;Ulrich Salzer;Likun Du;Jan Fredrik Björkander

Frequent Co-Authors

C. I. Edvard Smith
C. I. Edvard Smith Karolinska University Hospital
Qiang Pan-Hammarström
Qiang Pan-Hammarström Karolinska Institute
Asghar Aghamohammadi
Asghar Aghamohammadi Tehran University of Medical Sciences
Nima Rezaei
Nima Rezaei Tehran University of Medical Sciences
Bodo Grimbacher
Bodo Grimbacher University of Freiburg
Alessandro Plebani
Alessandro Plebani University of Brescia
Ning Li
Ning Li China Agricultural University
Helen Chapel
Helen Chapel University of Oxford
Ulrich Salzer
Ulrich Salzer University of Freiburg
Luigi D. Notarangelo
Luigi D. Notarangelo National Institutes of Health

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