Guardant Health to present 28 abstracts highlighting advances in tumor typing, therapy selection and expanded utility of multiomic tissue and liquid biopsy testing at AACR 2026

The company and its research collaborators will present 28 abstracts, including 3 oral sessions, showcasing advances in methylation-based tumor classification and liquid biopsy technology at the American Association for Cancer Research (AACR) Annual Meeting in San Diego, California taking place April 17 – 22, 2026.

Key data that will be presented include:

• An oral presentation of research data showing high accuracy of Guardant360 Tissue in determining tissue of origin with strong performance in cancers of unknown primary, correctly identifying the likely origin in approximately 92% of known cases across more than 6,000 tissue samples and 24 tumor types and supporting the clinical utility of methylation-based tumor typing for tissue samples in diagnostically challenging settings.
• An oral presentation showcasing the expanded utility of Guardant360 Liquid beyond basic genomic testing, highlighting the strength of its novel epigenomic features in increasing clinical actionability. Researchers found that Guardant360 Liquid demonstrated actionable findings for 85% of metastatic breast cancer patients and 89% of patients with advanced colorectal cancer.
• A real-world analysis evaluating the utility of Guardant Reveal to identify new primary malignancies during minimal residual disease (MRD) monitoring, demonstrating the potential to detect separate primary cancers in patients over time with non-invasive, liquid biopsy technology.
• Additional research bolstering the potential of Guardant360 Tissue in expanding access to targeted treatment options showing that a tissue-based genomic instability score (GIS) can accurately detect DNA repair deficiencies in breast, ovarian, and pancreatic cancers and accurately identifying patients who may benefit from PARP inhibitors.

“The breadth of the data Guardant will be presenting demonstrate the power of our blood- and tissue-based tests in helping address critical gaps across cancer care,” said Dr. Craig Eagle, Chief Medical Officer at Guardant Health. “From identifying cancers of unknown primary and detecting new malignancies in tandem with MRD monitoring to expanding treatment options for more cancers, we are eager to present these findings along with our research collaborators at the AACR meeting and proud to offer innovative tests that are meeting today’s most complex challenges in cancer care.”

View key Guardant Health and collaborator presentations at AACR 2026 HERE.