Professor Phaik Yeong Cheah
Contact information
Podcast interview
The ethics of research

Identifying and addressing ethical issues are key to the success of any clinical trials, particularly when working with vulnerable populations. Tackling these issues helps improve the quality of research and translate the evidence of clinical trials into improvement of management of patients.
Research groups
Professor Phaik Yeong Cheah
Professor of Global Health
Bioethics & Engagement
Phaik Yeong Cheah, is a Professor of Global Health and bioethicist at the University of Oxford. She is the head of Bioethics and Engagement at the Mahidol Oxford Tropical Medicine Research Unit (MORU). Phaik Yeong was the head of MORU’s Clinical Trials Support Group from 2007 to 2015. Before moving to MORU, Bangkok in 2007, she worked in the Clinical Trials & Research Governance office at Oxford.
She currently manages MORU’s community and public engagement programme that aims to ensure that MORU’s research is ethical, and responsive, and that its potential health impact is maximized. With colleagues at MORU, she has initiated many engagement activities in Southeast Asia, such as establishing public and community advisory groups (e.g. Tak Province Community Ethics Advisory Board in 2009), science theatre programmes, and science cafes in Thailand, Myanmar, Cambodia and Laos. A project she led, “Village Drama Against Malaria” won the 2019 University of Oxford Vice Chancellor’s Choice Award for Public Engagement.
Phaik Yeong’s research focuses on ethical issues arising in research with under-served populations, in particular how to ethically involve children, migrants, refugees and other vulnerable groups in research. Her other area of research is how to promote fair and equitable sharing of individual-level health research data. She is also interested in ethics and antimicrobial resistance (AMR). She is the co-Principal Investigator of the project, "A just transitions framework for equitable and sustainable mitigation of AMR" funded by the British Academy.
Phaik Yeong was a fellow at the Rockefeller Foundation Bellagio Centre in Mar-Apr 2019. She has been a member of the Steering Committee of the Global Forum on Bioethics in Research (GFBR) since 2016. She is a member of the Steering Committee of the University of Oxford’s MSc International Health & Tropical Medicine and teaches some of its ethics and engagement modules.
Phaik Yeong grew up in Malaysia, has a degree in Pharmacy (Universiti Sains Malaysia), MSc in Bioethics (Erasmus Mundus) and PhD in Pharmaceutical Sciences (Universiti Sains Malaysia). As part of her PhD work, she coordinated a multi-centre clinical trial on chronic prostatitis in Malaysia.
Phaik Yeong was named one of Asia's most influential leaders in 2022 - https://www.tatlerasia.com/people/professor-cheah-phaik-yeong
Key publications
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Research ethics in context: understanding the vulnerabilities, agency and resourcefulness of research participants living along the Thai–Myanmar border
Journal article
Khirikoekkong N. et al, (2020), International Health, 12, 551 - 559
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Data Access Committees.
Journal article
Cheah PY. and Piasecki J., (2020), BMC medical ethics, 21
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Ethical considerations in deploying triple artemisinin-based combination therapies for malaria: An analysis of stakeholders' perspectives in Burkina Faso and Nigeria.
Journal article
Tindana P. et al, (2022), PloS one, 17
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Interventions to address antimicrobial resistance: an ethical analysis of key tensions and how they apply in low- income and middle-income countries.
Journal article
Pokharel S. et al, (2024), BMJ global health, 9
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Economic and social impacts of COVID-19 and public health measures: results from an anonymous online survey in Thailand, Malaysia, the United Kingdom, Italy and Slovenia
Journal article
Osterrieder A. et al, (2020)
Recent publications
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A just war on bugs? Ethical differences between antimalarial resistance and antibacterial resistance.
Journal article
Johnson T. et al, (2025), BMJ global health, 10
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Temporal correlations between RBD-ACE2 blocking and binding antibodies to SARS-CoV-2 variants in CoronaVac-vaccinated individuals and their persistence in COVID-19 patients.
Journal article
Poolchanuan P. et al, (2025), Scientific reports, 15
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Author Correction: Call for a fairer approach to authorship in publishing biomedical research.
Journal article
Cheah PY. and Parker M., (2025), Communications medicine, 5
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Better engagement, better evidence: working in partnership with patients, the public, and communities in clinical trials with involvement and good participatory practice.
Journal article
Gobat N. et al, (2025), The Lancet. Global health, 13, e716 - e731
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Tracing epistemic injustice in global antimicrobial resistance research.
Other
Cheah PY. et al, (2025), Trends in microbiology