Faculty profile
Zareen Ahmad
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Read how they describe their research on their University of Toronto profile.
Latest papers
Differences in IgG Sialylation Distinguish Asymptomatic From Symptomatic Antinuclear Antibody-Positive Individuals.
Arthritis & rheumatology (Hoboken, N.J.) · 2026
Improving Systemic Sclerosis Quality of Care
The Journal of Rheumatology · 2025
Interferon and interferon-induced cytokines as markers of impending clinical progression in ANA+ individuals without a systemic autoimmune rheumatic disease diagnosis.
Arthritis research & therapy · 2023
12 publications.
Differences in IgG Sialylation Distinguish Asymptomatic From Symptomatic Antinuclear Antibody-Positive Individuals.
Muñoz-Grajales C, Ucciferri CC, Johnson SR, Touma Z, Ahmad Z, Bonilla D, Hiraki LT, Bookman A, Wither JE
Improving Systemic Sclerosis Quality of Care
Aos A. Aboabat, Samar Aboulenain, Hila Jazayeri, Zareen Ahmad, Medha L. Soowamber, Dalage Morris, Sindhu R. Johnson
Interferon and interferon-induced cytokines as markers of impending clinical progression in ANA+ individuals without a systemic autoimmune rheumatic disease diagnosis.
Kim ST, Muñoz-Grajales C, Dunn SE, Schneider R, Johnson SR, Touma Z, Ahmad Z, Bonilla D, Atenafu EG, Hiraki LT, Bookman A, Wither J
Advanced Autoantibody Testing in Systemic Sclerosis
Kholoud Almaabdi, Zareen Ahmad, Sindhu R. Johnson
Quality Measures in Systemic Sclerosis
Aos A. Aboabat, Zareen Ahmad, Amanda J. Steiman, Sindhu R. Johnson
Serological abnormalities that predict progression to systemic autoimmune rheumatic diseases in antinuclear antibody-positive individuals.
Muñoz-Grajales C, Prokopec SD, Johnson SR, Touma Z, Ahmad Z, Bonilla D, Hiraki L, Bookman A, Boutros PC, Chruscinski A, Wither J
Altered Balance of Pro-Inflammatory Immune Cells to T Regulatory Cells Differentiates Symptomatic From Asymptomatic Individuals With Anti-Nuclear Antibodies.
Gupta R, Vanlieshout E, Manion K, Bonilla D, Kim M, Muñoz-Grajales C, Nassar C, Johnson SR, Hiraki LT, Ahmad Z, Touma Z, Bookman A, Wither JE
Botulinum toxin in the management of primary and secondary Raynaud's phenomenon
Daniel B. Ennis, Zareen Ahmad, Melanie A. Anderson, Sindhu R. Johnson
Ethnic Variations in Systemic Sclerosis Disease Manifestations, Internal Organ Involvement, and Mortality
Haifa A. Alsheikh, Zareen Ahmad, Sindhu R. Johnson
Epidemiology and Survival of Systemic Sclerosis-Systemic Lupus Erythematosus Overlap Syndrome.
Alharbi S, Ahmad Z, Bookman AA, Touma Z, Sanchez-Guerrero J, Mitsakakis N, Johnson SR
Frequent collaborators
- Joan Wither and Zahi Touma: 69 shared papers
- Sindhu Johnson and Zahi Touma: 39 shared papers
- Linda Hiraki and Zahi Touma: 23 shared papers
- Joan Wither and Linda Hiraki: 20 shared papers
- Sindhu Johnson and Joan Wither: 18 shared papers
- Sindhu Johnson and Zareen Ahmad: 12 shared papers
- Sindhu Johnson and Linda Hiraki: 10 shared papers
- Sindhu Johnson and Arthur Bookman: 8 shared papers
- Joan Wither and Arthur Bookman: 7 shared papers
- Sindhu Johnson and Duminda Wijeysundera: 5 shared papers
- Linda Hiraki and Arthur Bookman: 5 shared papers
- Zahi Touma and Zareen Ahmad: 5 shared papers
- Joan Wither and Zareen Ahmad: 4 shared papers
- Linda Hiraki and Zareen Ahmad: 4 shared papers
- Zareen Ahmad and Arthur Bookman: 4 shared papers
- Sindhu Johnson and Nicholas Mitsakakis: 2 shared papers
- Duminda Wijeysundera and Nicholas Mitsakakis: 2 shared papers
- Shannon Dunn and Raphael Schneider: 2 shared papers
- Joan Wither and Raphael Schneider: 2 shared papers
- Linda Hiraki and Raphael Schneider: 2 shared papers
- Zahi Touma and Nicholas Mitsakakis: 2 shared papers
- Zahi Touma and Amanda Steiman: 2 shared papers
- Sindhu Johnson and Shannon Dunn: 1 shared paper
- Sindhu Johnson and Samar Aboulenain: 1 shared paper
- Sindhu Johnson and Amanda Steiman: 1 shared paper
- Sindhu Johnson and Medha Soowamber: 1 shared paper
- Duminda Wijeysundera and Zareen Ahmad: 1 shared paper
- Shannon Dunn and Joan Wither: 1 shared paper
- Shannon Dunn and Zareen Ahmad: 1 shared paper
- Linda Hiraki and Amanda Steiman: 1 shared paper
- Raphael Schneider and Zareen Ahmad: 1 shared paper
- Nicholas Mitsakakis and Zareen Ahmad: 1 shared paper
- Samar Aboulenain and Zareen Ahmad: 1 shared paper
- Samar Aboulenain and Medha Soowamber: 1 shared paper
- Zareen Ahmad and Amanda Steiman: 1 shared paper
- Zareen Ahmad and Medha Soowamber: 1 shared paper
- Department of Medicine
- Epidemiology Division
- Department of Anesthesiology and Pain Medicine
- Biostatistics Division
- Department of Immunology
Co-authors at University of Toronto, colored by department. Thicker lines mean more shared papers; select anyone to open their profile and their own map.
Sindhu Johnson
Department of Medicine
12 shared papers, latest 2026
Zahi Touma
Department of Medicine
5 shared papers, latest 2026
Arthur Bookman
Department of Medicine
4 shared papers, latest 2026
Joan Wither
Department of Medicine
4 shared papers, latest 2026
Linda Hiraki
Epidemiology Division
4 shared papers, latest 2026
Amanda Steiman
Department of Medicine
1 shared papers, latest 2023
Medha Soowamber
Department of Medicine
1 shared papers, latest 2025
Andrzej Chruscinski
Faculty
1 shared papers, latest 2022
Raphael Schneider
Department of Medicine
1 shared papers, latest 2023
Nicholas Mitsakakis
Biostatistics Division
1 shared papers, latest 2018
Samar Aboulenain
Department of Medicine
1 shared papers, latest 2025
Duminda Wijeysundera
Department of Anesthesiology and Pain Medicine
1 shared papers, latest 2018
Shannon Dunn
Department of Immunology
1 shared papers, latest 2023
Paul Boutros
Faculty
1 shared papers, latest 2022
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Profile data last refreshed on September 29, 2026 from the university directory, publication records and public research funding records.