World's Best Scientists 2026 revealed!
Kathleen I. Pritchard

Kathleen I. Pritchard

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Best Female Scientists
2025
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Medicine
Canada
2023

D-Index & Metrics

Best Female Scientists

D-Index
117
Citations
89100
World Ranking
625
National Ranking
18

Medicine

D-Index
120
Citations
93112
World Ranking
3654
National Ranking
149

Research.com Recognitions

  • 2025 - Research.com Best Female Scientists Award
  • 2023 - Research.com Medicine in Canada Leader Award

Overview

Kathleen I. Pritchard is affiliated with the University of Toronto in Canada and has a research focus predominantly in Medicine and Biochemistry, Genetics and Molecular Biology. Their work encompasses several specialized subfields including Oncology, Cancer Research, Genetics, Molecular Biology, and Pulmonary and Respiratory Medicine.

The main topics of Kathleen I. Pritchard's research involve Breast Cancer Treatment Studies, Estrogen and related hormone effects, HER2/EGFR in Cancer Research, Cancer Treatment and Pharmacology, Cancer-related cognitive impairment studies, Bone health and treatments, and Advanced Breast Cancer Therapies.

Among the frequently published venues where they have contributed are Cancer Research, UNC Libraries, The Lancet, Journal of Clinical Oncology, and npj Breast Cancer.

Frequent collaborators in their research work include Lois E. Shepherd, Martine Piccart, Evandro de Azambuja, Mark N. Levine, and Dongsheng Tu.

Selected recent papers authored or co-authored by Kathleen I. Pritchard include:

  • Trastuzumab for early-stage, HER2-positive breast cancer: a meta-analysis of 13,864 women in seven randomised trials, 2021, The Lancet Oncology
  • Anthracycline-containing and taxane-containing chemotherapy for early-stage operable breast cancer: a patient-level meta-analysis of 100,800 women from 86 randomised trials, 2023, The Lancet
  • Results of the phase I CCTG IND.231 trial of CX-5461 in patients with advanced solid tumors enriched for DNA-repair deficiencies, 2022, Nature Communications
  • Patient-Reported Cognitive Impairment Among Women With Early Breast Cancer Randomly Assigned to Endocrine Therapy Alone Versus Chemoendocrine Therapy: Results From TAILORx, 2020, Journal of Clinical Oncology
  • The LISA randomized trial of a weight loss intervention in postmenopausal breast cancer, 2020, npj Breast Cancer

Best Publications

  • Effects of chemotherapy and hormonal therapy for early breast cancer on recurrence and 15-year survival: an overview of the randomised trials

    O. Abe;R. Abe;K. Enomoto;K. Kikuchi

  • Triple-Negative Breast Cancer: Clinical Features and Patterns of Recurrence

    Rebecca Dent;Maureen Trudeau;Kathleen I. Pritchard;Wedad M. Hanna

  • Personalizing the treatment of women with early breast cancer: highlights of the St Gallen International Expert Consensus on the Primary Therapy of Early Breast Cancer 2013

    A Goldhirsch;E P Winer;A S Coates;R D Gelber

  • Polychemotherapy for early breast cancer: an overview of the randomised trials. Early Breast Cancer Trialists' Collaborative Group.

    C Focan;SM Steinberg;M Blichert-Toft;JF Forbes

  • Everolimus in Postmenopausal Hormone-Receptor–Positive Advanced Breast Cancer

    José Baselga;Mario Campone;Martine Piccart;Howard A. Burris

  • A randomized trial of letrozole in postmenopausal women after five years of tamoxifen therapy for early-stage breast cancer

    Paul E. Goss;James N. Ingle;Silvana Martino;Nicholas J. Robert

  • Comparisons between different polychemotherapy regimens for early breast cancer: meta-analyses of long-term outcome among 100,000 women in 123 randomised trials.

    R Peto;C Davies;J Godwin

  • Adjuvant Chemotherapy Guided by a 21-Gene Expression Assay in Breast Cancer

    Joseph A. Sparano;Robert J. Gray;Della F. Makower;Kathleen I. Pritchard

  • Prognostic and predictive value of the 21-gene recurrence score assay in postmenopausal women with node-positive, oestrogen-receptor-positive breast cancer on chemotherapy: a retrospective analysis of a randomised trial

    Kathy S Albain;William E Barlow;Steven Shak;Gabriel N Hortobagyi

  • American Society of Clinical Oncology Technology Assessment on the Use of Aromatase Inhibitors As Adjuvant Therapy for Postmenopausal Women With Hormone Receptor–Positive Breast Cancer: Status Report 2004

    Eric P. Winer;Clifford Hudis;Harold J. Burstein;Antonio C. Wolff

  • Prospective Validation of a 21-Gene Expression Assay in Breast Cancer

    J. A. Sparano;R. J. Gray;D. F. Makower;K. I. Pritchard

  • 20-Year Risks of Breast-Cancer Recurrence after Stopping Endocrine Therapy at 5 Years.

    Hongchao Pan;Richard Gray;Jeremy Braybrooke;Christina Davies

  • Randomized Trial of Letrozole Following Tamoxifen as Extended Adjuvant Therapy in Receptor-Positive Breast Cancer: Updated Findings from NCIC CTG MA.17

    Paul E. Goss;James N. Ingle;Silvana Martino;Nicholas J. Robert

  • Regional Nodal Irradiation in Early-Stage Breast Cancer

    Timothy J. Whelan;Ivo A. Olivotto;Wendy R. Parulekar;Ida Ackerman

  • De-escalating and escalating treatments for early-stage breast cancer: the St. Gallen International Expert Consensus Conference on the Primary Therapy of Early Breast Cancer 2017

    G. Curigliano;H. J. Burstein;E. P. Winer;M. Gnant

  • Fasting Insulin and Outcome in Early-Stage Breast Cancer: Results of a Prospective Cohort Study

    Pamela J. Goodwin;Marguerite Ennis;Kathleen I. Pritchard;Maureen E. Trudeau

  • Decreased levels of the cell-cycle inhibitor p27Kip1 protein: prognostic implications in primary breast cancer.

    Charles Catzavelos;Nandita Bhattacharya;Yee C. Ung;James A. Wilson

  • Randomized trial of intensive cyclophosphamide, epirubicin, and fluorouracil chemotherapy compared with cyclophosphamide, methotrexate, and fluorouracil in premenopausal women with node-positive breast cancer. National Cancer Institute of Canada Clinical Trials Group.

    M. N. Levine;V. H. Bramwell;K. I. Pritchard;B. D. Norris

  • Proposal for Standardized Definitions for Efficacy End Points in Adjuvant Breast Cancer Trials: The STEEP System

    Clifford A. Hudis;William E. Barlow;Joseph P. Costantino;Robert J. Gray

  • Adjuvant bisphosphonate treatment in early breast cancer: meta-analyses of individual patient data from randomised trials

    J. Bergh;K. Pritchard;K. Albain;S. Anderson

Frequent Co-Authors

Mark Levine
Mark Levine McMaster University
Timothy J. Whelan
Timothy J. Whelan McMaster University
Paul E. Goss
Paul E. Goss Harvard University
Pamela J. Goodwin
Pamela J. Goodwin University of Toronto
Karen A. Gelmon
Karen A. Gelmon University of British Columbia
James N. Ingle
James N. Ingle Mayo Clinic
Martine Piccart
Martine Piccart Université Libre de Bruxelles
Michael Gnant
Michael Gnant Medical University of Vienna
José Baselga
José Baselga Memorial Sloan Kettering Cancer Center
Dongsheng Tu
Dongsheng Tu Queen's University

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