World's Best Scientists 2026 revealed!
Katherine A. Hajjar

Katherine A. Hajjar

D-Index & Metrics

Biology and Biochemistry

D-Index
65
Citations
19579
World Ranking
9016
National Ranking
4007

Katherine A. Hajjar publication distribution in Biology and Biochemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where Katherine A. Hajjar sits on this spectrum.

47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 414 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 849 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 950 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 841 scientists 207–216 publications: 735 scientists 217–226 publications: 709 scientists 227–236 publications: 651 scientists 237–246 publications: 605 scientists 247–256 publications: 510 scientists 257–266 publications: 524 scientists 267–276 publications: 434 scientists 277–286 publications: 418 scientists 287–296 publications: 350 scientists 297–306 publications: 363 scientists 307–316 publications: 315 scientists 317–326 publications: 296 scientists 327–336 publications: 261 scientists 337–346 publications: 240 scientists 347–356 publications: 219 scientists 357–366 publications: 197 scientists 367–376 publications: 154 scientists 377–386 publications: 161 scientists 387–396 publications: 155 scientists 397–406 publications: 145 scientists 407–416 publications: 124 scientists 417–426 publications: 112 scientists 427–436 publications: 132 scientists 437–446 publications: 116 scientists 447–456 publications: 99 scientists 457–466 publications: 81 scientists 467–476 publications: 91 scientists 477–486 publications: 80 scientists 487–496 publications: 80 scientists 497–506 publications: 60 scientists 507–516 publications: 36 scientists 517–526 publications: 46 scientists 527–536 publications: 54 scientists 537–546 publications: 44 scientists 547–556 publications: 43 scientists 557–566 publications: 43 scientists 567–576 publications: 42 scientists 577–586 publications: 25 scientists 587–596 publications: 34 scientists 597–606 publications: 23 scientists 607–616 publications: 33 scientists 617–626 publications: 31 scientists 627–636 publications: 27 scientists 637–646 publications: 25 scientists 647–656 publications: 28 scientists 657–666 publications: 34 scientists 667–676 publications: 18 scientists 677–686 publications: 16 scientists 687–696 publications: 10 scientists 697–706 publications: 12 scientists 707–716 publications: 21 scientists 717–726 publications: 12 scientists 727–736 publications: 12 scientists 737–746 publications: 10 scientists 747–756 publications: 7 scientists 757–766 publications: 13 scientists 767–776 publications: 15 scientists 777–786 publications: 13 scientists 787–796 publications: 9 scientists 797–806 publications: 9 scientists 807–816 publications: 7 scientists 817–826 publications: 4 scientists 827–836 publications: 9 scientists 837–846 publications: 7 scientists 847–856 publications: 3 scientists 857–866 publications: 5 scientists 867–876 publications: 5 scientists 877–886 publications: 11 scientists 887–896 publications: 3 scientists 897–906 publications: 4 scientists 907–916 publications: 7 scientists 917–926 publications: 5 scientists 927–936 publications: 6 scientists 937–946 publications: 6 scientists 947–956 publications: 3 scientists 957–966 publications: 7 scientists 967–976 publications: 2 scientists 977–986 publications: 2 scientists 987–996 publications: 1 scientists 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientists 1,028+ publications: 100 scientists
47 publications 1,028+

This scientist: 135 publications — 19th percentile

19% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,028 publications or more.

Katherine A. Hajjar D-index placement in Biology and Biochemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Katherine A. Hajjar sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 317 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 900 scientists 52–53 D-Index: 1,026 scientists 54–55 D-Index: 1,150 scientists 56–57 D-Index: 1,236 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,163 scientists 62–63 D-Index: 1,131 scientists 64–65 D-Index: 1,032 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 715 scientists 72–73 D-Index: 709 scientists 74–75 D-Index: 596 scientists 76–77 D-Index: 512 scientists 78–79 D-Index: 473 scientists 80–81 D-Index: 412 scientists 82–83 D-Index: 373 scientists 84–85 D-Index: 358 scientists 86–87 D-Index: 285 scientists 88–89 D-Index: 273 scientists 90–91 D-Index: 227 scientists 92–93 D-Index: 208 scientists 94–95 D-Index: 193 scientists 96–97 D-Index: 153 scientists 98–99 D-Index: 157 scientists 100–101 D-Index: 148 scientists 102–103 D-Index: 120 scientists 104–105 D-Index: 113 scientists 106–107 D-Index: 100 scientists 108–109 D-Index: 86 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 72 scientists 114–115 D-Index: 73 scientists 116–117 D-Index: 64 scientists 118–119 D-Index: 53 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 54 scientists 124–125 D-Index: 43 scientists 126–127 D-Index: 38 scientists 128–129 D-Index: 49 scientists 130–131 D-Index: 26 scientists 132–133 D-Index: 18 scientists 134–135 D-Index: 23 scientists 136–137 D-Index: 32 scientists 138–139 D-Index: 32 scientists 140–141 D-Index: 27 scientists 142–143 D-Index: 19 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 12 scientists 148–149 D-Index: 16 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 10 scientists 154–155 D-Index: 13 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 9 scientists 162–163 D-Index: 13 scientists 164–165 D-Index: 4 scientists 166 D-Index: 4 scientists 167+ D-Index: 98 scientists
40 D-Index 167+

This scientist: 65 D-Index — 55th percentile

55% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 167 D-Index or more.

Research.com Recognitions

  • 2014 - Fellow of the American Association for the Advancement of Science (AAAS)
  • Member of the Association of American Physicians
  • Member of the Association of American Physicians
  • Member of the Association of American Physicians

Overview

Katherine A. Hajjar is affiliated with Cornell University in the United States and has contributed extensively to the fields of Medicine and Biochemistry, Genetics and Molecular Biology. Their research primarily focuses on molecular biology aspects, with notable engagements in ophthalmology, hematology, pulmonary and respiratory medicine, and neurology.

The scientist's work covers diverse topics with a significant focus on the roles of S100 Proteins and Annexins. Additional areas of research include blood coagulation and thrombosis mechanisms, retinal diseases and treatments, glaucoma and retinal disorders, traumatic brain injury and neurovascular disturbances, neonatal respiratory health research, and immune response and inflammation.

Among recent publications, notable papers include:

  • "Annexin A2 in Inflammation and Host Defense," 2020, Cells
  • "Lipofuscin causes atypical necroptosis through lysosomal membrane permeabilization," 2021, Proceedings of the National Academy of Sciences
  • "Annexin A2 in Fibrinolysis, Inflammation and Fibrosis," 2021, International Journal of Molecular Sciences
  • "Reduced expression of annexin A2 is associated with impaired cell surface fibrinolysis and venous thromboembolism," 2021, Blood
  • "Blockade of Annexin A2 Prevents Early Microvasculopathy in Murine Models of Diabetic Retinopathy," 2023, Investigative Ophthalmology & Visual Science

Frequent co-authors collaborating with Hajjar include:

  • Dena Almeida
  • Valentina Dallacasagrande
  • Hana I. Lim
  • Huigen Chen
  • Maria T. DeSancho

Hajjar's research has been published in venues such as:

  • Blood
  • Cells
  • Proceedings of the National Academy of Sciences
  • International Journal of Molecular Sciences
  • Investigative Ophthalmology & Visual Science

They have been recognized by their peers through awards, including being named a Fellow of the American Association for the Advancement of Science (AAAS) in 2014 and membership in the Association of American Physicians. These honors acknowledge contributions to scientific research without specifying the exact nature of the citation.

Best Publications

  • Impaired recruitment of bone-marrow–derived endothelial and hematopoietic precursor cells blocks tumor angiogenesis and growth

    David Lyden;Koichi Hattori;Koichi Hattori;Sergio Dias;Carla Costa

  • The perivascular niche regulates breast tumour dormancy

    Cyrus M. Ghajar;Héctor Peinado;Hidetoshi Mori;Irina R. Matei

  • Lipoprotein(a) modulation of endothelial cell surface fibrinolysis and its potential role in atherosclerosis.

    K A Hajjar;D Gavish;J L Breslow;R L Nachman

  • Molecular mechanisms of fibrinolysis.

    Gabriela Cesarman-Maus;Katherine A. Hajjar

  • Fibrinolysis and the control of blood coagulation.

    John C. Chapin;Katherine A. Hajjar

  • An endothelial cell receptor for plasminogen/tissue plasminogen activator. I. Identity with annexin II.

    K A Hajjar;A T Jacovina;J Chacko

  • The endothelial cell ecto-ADPase responsible for inhibition of platelet function is CD39.

    A. J. Marcus;M. J. Broekman;J. H. F. Drosopoulos;N. Islam

  • Annexin II and Bleeding in Acute Promyelocytic Leukemia

    Jill S. Menell;Gabriela M. Cesarman;Andrew T. Jacovina;Mary Ann McLaughlin

  • An endothelial cell receptor for plasminogen/tissue plasminogen activator (t-PA). II. Annexin II-mediated enhancement of t-PA-dependent plasminogen activation.

    G M Cesarman;C A Guevara;K A Hajjar

  • Annexin II regulates fibrin homeostasis and neoangiogenesis in vivo.

    Qi Ling;Andrew T. Jacovina;Arunkumar Deora;Maria Febbraio

  • Homocysteine-induced modulation of tissue plasminogen activator binding to its endothelial cell membrane receptor.

    K A Hajjar

  • Interleukin 1 induces endothelial cell synthesis of plasminogen activator inhibitor.

    R L Nachman;K A Hajjar;R L Silverstein;C A Dinarello

  • Binding of plasminogen to cultured human endothelial cells.

    K A Hajjar;P C Harpel;E A Jaffe;R L Nachman

  • Lipoprotein (a) regulates plasminogen activator inhibitor-1 expression in endothelial cells. A potential mechanism in thrombogenesis.

    O R Etingin;D P Hajjar;K A Hajjar;P C Harpel

  • An Annexin 2 Phosphorylation Switch Mediates p11-dependent Translocation of Annexin 2 to the Cell Surface

    Arunkumar B. Deora;Geri Kreitzer;Andrew T. Jacovina;Katherine A. Hajjar

  • Tissue plasminogen activator binding to the annexin II tail domain. Direct modulation by homocysteine

    Katherine A. Hajjar;Laura Mauri;Andrew T. Jacovina;Fengming Zhong

  • Binding of tissue plasminogen activator to cultured human endothelial cells.

    K A Hajjar;N M Hamel;P C Harpel;R L Nachman

  • High Affinity Binding of β2-Glycoprotein I to Human Endothelial Cells Is Mediated by Annexin II

    Keying Ma;Ronit Simantov;Jing Chuan Zhang;Roy Silverstein

  • Tumor necrosis factor-mediated release of platelet-derived growth factor from cultured endothelial cells.

    K A Hajjar;D P Hajjar;R L Silverstein;R L Nachman

  • Inhibition of platelet function by an aspirin-insensitive endothelial cell ADPase. Thromboregulation by endothelial cells.

    A J Marcus;L B Safier;K A Hajjar;H L Ullman

Frequent Co-Authors

David P. Hajjar
David P. Hajjar Cornell University
Roy L. Silverstein
Roy L. Silverstein Medical College of Wisconsin
John P. Leonard
John P. Leonard Cornell University
Laura Santambrogio
Laura Santambrogio Cornell University
Ralph L. Nachman
Ralph L. Nachman Cornell University
Eng H. Lo
Eng H. Lo Harvard University
Babette B. Weksler
Babette B. Weksler Cornell University
Shahin Rafii
Shahin Rafii Cornell University
David Lyden
David Lyden Cornell University
Kenneth I. Berns
Kenneth I. Berns University of Florida

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