BOSTON, Mass., November 12, 2025 — P53 Inc., a U.S.-based innovator in medical media, scientific publishing, and research, today announced the appointment of Thomas L. Harrison to its Board of Directors. Dr. Harrison brings to P53 Inc. more than four decades of leadership in healthcare communications, branding, and strategic growth.
About Thomas L. Harrison
Thomas L. Harrison is one of the most accomplished figures in global healthcare communications. As Chairman Emeritus of Diversified Agency Services (DAS), a division of Omnicom Group Inc., he led the world’s largest network of marketing services and communications companies overseeing more than 5,000 clients worldwide. Before joining Omnicom, Harrison co-founded Harrison & Star Business Group, which became one of the most successful and influential agencies in healthcare advertising — celebrated for blending scientific integrity with creative excellence. He currently serves as Lead Independent Director of AFC Gamma and director, Acurx Pharmaceuticals. In 2024, he joined the Board of Directors of Agenus Inc. (NASDAQ: AGEN), a leading immuno-oncology company.
P53 Inc. President Prof. Gevorg Tamamyan welcomed Mr. Harrison’s appointment, stating:
“Thomas L. Harrison’s legacy in building and scaling global consumer brands and healthcare communication empires is unmatched. At P53, we are shaping the future of medical media and scientific publishing — and his strategic insight, leadership, and deep understanding of science-driven storytelling will help us reach new heights. His joining our Board is both a great honor and a major step forward in realizing our mission to be the voice of medicine and our vision to be the fastest growing , most reliable, and innovative global source of medical information.”
About P53 Inc.
P53 Inc. is a U.S.-based innovator in medical media, scientific publishing, and research — proud home of OncoDaily™, OncoDaily TV, OncoDaily Medical Journal, CancerWorld Magazine, OncoDaily Magazine, OncoDaily IO, OncoDaily GI, Hemostasis Today, Fertility News, Boston Institute for Global Rankings (BIGR), Global Cancer Movement, Yvonne Award, OncoThon™, World Health Voices and VIRO.
With a mission to be the voice of medicine and a vision to become the fastest growing, most reliable, and innovative global source of medical information — where “everyone has a space to shape the future of medicine and healthcare” — P53 Inc. continues to expand its leadership across oncology, hemostasis, fertility, and biomedical innovation. Within five years, P53 Inc. plans to evolve into a global multichannel healthcare media technology company operating 50 active brands across key medical verticals.