Pathology informatics selected abstracts
July 2026—Apollo is a health care-scale multimodal foundation model designed to integrate longitudinal clinical data into unified virtual patient representations. It was developed by the authors using data from a major U.S. health care system and trained on approximately 25 billion clinical records from 7.2 million patients that spanned more than three decades. The data set incorporated 12 medical specialties and 28 clinical modalities, including pathology images, laboratory testing, clinical documentation, medications, and structured electronic health record data.