Abstracts From the 2026 Health Care Systems Research Network (HCSRN) Annual Conference, Dallas, Texas.

The Health Care Systems Research Network (HCSRN) comprises 18 learning health systems with integrated care delivery and embedded research units. The network's annual conference serves as a forum for research teams from member institutions to disseminate project findings, explore scientific collaborations, and share insights about population-based research practices that can measurably improve health and health care for all. The theme of this year's conference was "Scaling Learning Health Systems: Data-Driven Pathways to Better Outcomes." Abstracts presented at HCSRN 2026 are published in this issue supplement of the Journal of Patient-Centered Research and Reviews, the journal of record for HCSRN's annual conference proceedings.