The Pi Iota At-Large Chapter of Sigma Theta Tau International Honor Society of Nursing (Sigma), led by the School of Nursing at PolyU and including the nursing schools of five other higher education institutions in Hong Kong, has joined forces with Sigma Asia to host the Sigma Asia Regional Conference 2025 on 5 and 6 December 2025. Themed "Digital Health and AI in Nursing: Transforming Care Through Innovation", the Conference brings together more than 550 nursing practitioners, researchers and scholars from 19 countries and regions.

The Conference features multiple keynote speakers whose sessions highlight key trends and issues related to emerging technologies and explore their impacts on nursing practice and workforce, healthcare education and research.

Sigma is dedicated to cultivating professional nursing communities worldwide and advancing nursing knowledge, teaching and service through education, research and practice. The Pi Iota Chapter was founded by the PolyU School of Nursing in 2000. It evolved into an At-large Chapter in 2021, which comprises the six nursing schools from higher education institutions in Hong Kong: PolyU School of Nursing; the School of Nursing and Health Sciences at Hong Kong Metropolitan University; The Nethersole School of Nursing, Faculty of Medicine at The Chinese University of Hong Kong; the School of Nursing, LKS Faculty of Medicine at The University of Hong Kong; the School of Nursing at Tung Wah College; and the Division of Nursing Education at the School of Continuing Education of Hong Kong Baptist University.