School of Medicine


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  • Nazish Sayed MD, PhD

    Nazish Sayed MD, PhD

    Assistant Professor (Research) of Surgery (Vascular Surgery) and at the Stanford Cardiovascular Institute

    Current Research and Scholarly InterestsThe Sayed Laboratory is focused on the development of novel technologies that drive innovation in regenerative medicine, disease modeling, and drug testing in vascular biology. The lab conducts translational research in vascular biology and aims to understand the role of the vasculature in the development of cardiac diseases, including those due to inherited genetic variants or environmental insults such as type 2 diabetes or hypertension. The lab employs the human induced pluripotent stem cell (iPSC) technology to generate patient-specific vascular cells (endothelial and vascular smooth muscle cells) as an alternative to animal models providing a human tissue surrogate for research that is scalable and sustainable. By employing this unique platform, the lab also investigates the role of chemotherapeutic agents (anti-cancer drugs) on the vasculature. Dr. Sayed’s lab has also established an endothelial regeneration program, where they leverage the innate immune system to regenerate endothelial cells from human fibroblasts.

    Work from the lab has led to seminal discoveries in the areas of 1) Nitric oxide (NO) biology, (2) vascular biology, (3) stem cell biology, (4) cardiovascular disease modeling (5) cardio-oncology.

  • Kenneth Tran, MD

    Kenneth Tran, MD

    Clinical Assistant Professor, Surgery - Vascular Surgery

    BioDr. Tran is a vascular surgeon in the Vascular and Endovascular Surgery Division at Stanford Health Care. He is also a clinical assistant professor of surgery at the Stanford University School of Medicine.

    Dr. Tran graduated with high honors from the University of Virginia School of Engineering in 2011 and earned his medical degree from Stanford University School of Medicine in 2016. He completed his surgical training at Stanford University School of Medicine, culminating in his completion of the Vascular Surgery Integrated Residency at Stanford in 2023. During his residency, Dr. Tran completed a two-year NIH-funded fellowship under the mentorship of Dr. Alison Marsden. This fellowship focused on using computer simulations of blood flow to enhance the treatment of vascular diseases.

    Dr. Tran's research pursuits center on expanding the use of computational simulation techniques to understand changes in blood flow after different vascular treatments. He also has a special interest in using customized grafts to repair complex aortic conditions. Dr. Tran studies blood flow and clinical outcomes after treatment with these customized aortic grafts.

    He has published his work in numerous prestigious peer-reviewed journals, including the Journal of Vascular Surgery, JAMA Surgery, and the European Journal of Vascular and Endovascular Surgery. He has presented at the podium at numerous national and international conferences. Dr. Tran has also received multiple research awards, including the Vascular and Endovascular Surgery Society’s Medtronic Resident Research Award, the best resident presentation at the Swiss Society for Vascular Diseases, and the Young Researcher Prize at the European Symposium on Vascular Biomaterials. He also co-authored a chapter in the book Complications in Endovascular Surgery.

    Dr. Tran’s clinical interests include the entire spectrum of vascular surgery, including but not limited to:
    • Traditional and minimally invasive strategies for aortic aneurysm repair
    • Traditional, minimally invasive, and hybrid methods for managing peripheral vascular disease
    • Management of cerebrovascular disease, including carotid angioplasty/stenting, transcarotid artery revascularization (TCAR), and conventional carotid surgery
    • Comprehensive dialysis access creation
    • Treatment of venous reflux