2026 John Freedman: Immunology Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Immunology	73	2154	1977	45	39	319	16580
Medicine	73	19704	18487	834	788	326	16658

John Freedman 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 John Freedman sits on this spectrum.

62 publications 807+

This scientist: 319 publications — 68th percentile

68% of scientists in this discipline score the same or lower.

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

John Freedman 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 John Freedman sits on this spectrum.

40 D-Index 157+

This scientist: 73 D-Index — 58th percentile

58% of scientists in this discipline score the same or lower.

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

Overview

John Freedman is affiliated with the University of Toronto in Canada and specializes primarily in the field of Medicine. Their research spans several subfields including Hematology, Biochemistry, Critical Care and Intensive Care Medicine, Internal Medicine, and Nephrology.

The scientific inquiry by Freedman frequently addresses key topics such as Platelet Disorders and Treatments, Blood Transfusion and Management, Trauma, Hemostasis, Coagulopathy, Resuscitation, Venous Thromboembolism Diagnosis and Management, Renal Diseases and Glomerulopathies, Blood Groups and Transfusion, and Blood Coagulation and Thrombosis Mechanisms.

Freedman's notable publications include:

ONTraC: A 20-Year History of a Successfully Coordinated Provincewide Patient Blood Management Program: Lessons Learned and Goals Achieved (2022) published in Anesthesia & Analgesia
Desialylated Platelet Clearance in the Liver is a Novel Mechanism of Systemic Immunosuppression (2023) published in Research
Plasma fibronectin supports hemostasis and regulates thrombosis (2020) published in UNC Libraries
Oral iron versus intravenous iron for preoperative anemia management: the ONTraC experience (2020) published in Transfusion Medicine Reviews
OA4-AM23-SN-05 | Let's Talk About Sex: Females Experience Greater Perioperative Anemia and Higher Transfusion Rates in Major Elective Surgery (2023) published in Transfusion

Frequent collaborators in Freedman's research include Katerina Pavenski, Alanna Howell, Heyu Ni, Yulia Lin, and Lee Vernich.

The preferred publication venues for Freedman's work include Anesthesia & Analgesia, Research, UNC Libraries, Transfusion Medicine Reviews, and Transfusion.

Best Publications

Platelets and the immune continuum

John W. Semple;Joseph E. Italiano;Joseph E. Italiano;John Freedman;John Freedman

1949
Citations
Platelet Toll-like receptor expression modulates lipopolysaccharide-induced thrombocytopenia and tumor necrosis factor-α production in vivo

Rukhsana Aslam;Edwin R. Speck;Michael Kim;Andrew R. Crow

605
Citations
Differences in Serum Cytokine Levels in Acute and Chronic Autoimmune Thrombocytopenic Purpura: Relationship to Platelet Phenotype and Antiplatelet T-cell Reactivity

John W. Semple;Youli Milev;Donna Cosgrave;Meera Mody

500
Citations
Platelets and innate immunity

John W Semple;John Freedman

403
Citations
Desialylation is a mechanism of Fc-independent platelet clearance and a therapeutic target in immune thrombocytopenia

June Li;Dianne E. van der Wal;Guangheng Zhu;Miao Xu

387
Citations
Proceedings of a consensus conference : Towards an understanding of TRALI

Mindy Goldman;Kathryn E. Webert;Donald M. Arnold;John Freedman

321
Citations
Multimodal Patient Blood Management Program Based on a Three-pillar Strategy: A Systematic Review and Meta-analysis.

Friederike C Althoff;Holger Neb;Eva Herrmann;Kevin M Trentino

315
Citations
INTRAVENOUS IMMUNOGLOBULIN AMELIORATES ITP VIA ACTIVATING FC GAMMA RECEPTORS ON DENDRITIC CELLS

Vinayakumar Siragam;Andrew R Crow;Andrew R Crow;Davor Brinc;Davor Brinc;Seng Song

314
Citations
Increased antiplatelet T helper lymphocyte reactivity in patients with autoimmune thrombocytopenia.

John W. Semple;John Freedman

247
Citations
A murine model of severe immune thrombocytopenia is induced by antibody- and CD8+ T cell–mediated responses that are differentially sensitive to therapy

Leola Chow;Leola Chow;Rukhsana Aslam;Rukhsana Aslam;Edwin R. Speck;Edwin R. Speck;Michael Kim

232
Citations
Platelets in hemostasis and thrombosis: role of integrins and their ligands.

Heyu Ni;John Freedman

222
Citations
Cellular immune dysfunction in immune thrombocytopenia (ITP).

Christopher G. J. McKenzie;Li Guo;John Freedman;John W. Semple

218
Citations
HLA alloimmunization against platelet transfusions: pathophysiology, significance, prevention and management.

Katerina Pavenski;John Freedman;J W Semple

214
Citations
Plasma fibronectin supports hemostasis and regulates thrombosis

Yiming Wang;Adili Reheman;Christopher M. Spring;Jalil Kalantari

214
Citations
Guidelines on the use of intravenous immune globulin for neurologic conditions.

Tom Feasby;Brenda Banwell;Timothy Benstead;Vera Bril

194
Citations
Platelet-bound lipopolysaccharide enhances Fc receptor–mediated phagocytosis of IgG-opsonized platelets

John W. Semple;Rukhsana Aslam;Michael Kim;Edwin R. Speck

188
Citations
Pathologic high shear stress induces apoptosis events in human platelets.

Valery Leytin;David J. Allen;David J. Allen;Sergiy Mykhaylov;Sergiy Mykhaylov;Lukasz Mis;Lukasz Mis

182
Citations
The Platelet Function Analyzer (PFA‐100®): a novel in‐vitro system for evaluation of primary haemostasis in children

M D Carcao;V S Blanchette;J A Dean;L He

182
Citations
Relative efficacy of intravenous immunoglobulin G in ameliorating thrombocytopenia induced by antiplatelet GPIIbIIIa versus GPIbα antibodies

Michelle Lee Webster;Ebrahim Sayeh;Min Crow;Pingguo Chen

179
Citations
Platelet apoptosis in stored platelet concentrates and other models

Valery Leytin;John Freedman;John Freedman

167
Citations

Frequent Co-Authors

John W. Semple Lund University

Heyu Ni University of Toronto

Hong Yang University of Illinois at Urbana-Champaign

Marion E. Reid New York Blood Center

Frederick A. Ofosu McMaster University

Zaverio M. Ruggeri Scripps Research Institute

Cheng Zhu Georgia Institute of Technology

Morris A. Blajchman McMaster University

Patrick Tso University of Cincinnati

Richard O. Hynes MIT

External Links

Personal website of John Freedman

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