About

Horizon Pathology, LLC is a pathology consulting firm based in Frederick, Maryland, providing expert support to biopharmaceutical companies, contract research organizations (CROs), academic researchers, and medical device developers.

Founded by Elijah Edmondson, DVM PhD DACVP DABT, the firm specializes in investigative pathology and toxicology, research and animal modeling, AI and pathology image analysis, spatial transcriptomic and molecular pathology, and preclinical consulting. We deliver timely, high-quality pathology evaluations and provide strategic insights that help advance preclinical programs and de-risk development decisions.

Expertise & Experience

Dr. Edmondson brings extensive experience in comparative pathology, toxicologic pathology, and translational research. His work spans multiple therapeutic areas, including oncology, immunology, infectious disease, and rare disease models. He has contributed to numerous peer-reviewed publications (see Publications) and has supported the successful development of novel therapeutics through detailed histopathologic evaluation, mechanistic investigations, and regulatory documentation.

Key areas of specialization include:

• Investigative and diagnostic pathology of unexpected or adverse findings

• Animal model development and characterization

• Preclinical toxicology study evaluation and reporting

• Peer review of pathology data

• Immunohistochemistry and special stain interpretation

• Spatial transcriptomic data evaluation and multimodal data integration

• Support for IND-enabling studies and regulatory submissions

Our Approach

At Horizon Pathology, we combine rigorous scientific analysis with clear, actionable communication. Whether you need support for a single study, ongoing program consultation, or expert peer review, we prioritize responsiveness, scientific accuracy, and practical solutions that move your projects forward. Located in Frederick, Maryland, we work with clients across the United States and internationally, offering flexible remote and on-site support as needed.

Mission

To provide exceptional pathology and toxicology expertise that accelerates the development of safe and effective therapeutics while maintaining the highest standards of scientific integrity.