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The assay provides comprehensive genomic information to oncologists from a blood draw, using targeted next-generation sequencing of circulating cell-free DNA.
The company is employing Guardant360 in a Phase III trial assessing the efficacy of the drug both in a larger population and in women who test positive for ESR1 mutations.
The companies will work together to bring Guardant360 through regulatory approval and commercialize it as a CDx for Janssen's amivantamab.
The field is collecting evidence supporting genomics-guided care but experts are still awaiting prospective data and grappling with other challenges.
A study of both tissue and blood samples from patients in a small trial found that liquid biopsy may detect putative resistance mutations missed in tissue.
Health systems' molecular testing labs haven't had to cut back on genomic profiling for cancer patients yet but may need to accommodate COVID-19 testing if needed.
Paired tumor/germline analysis is not routinely done in cancer care, but some labs are starting to report incidental germline findings alongside patient's tumor profiles.
The findings should spur cancer centers to review testing rates and address barriers, said experts from Hackensack University, Cota Healthcare, and Guardant Health.
Among the firms presenting, drugmakers, speciality biotechs, and genetic testing firms provided an update on their precision oncology development programs.
The company plans to submit a companion diagnostic version of its sequencing-based liquid biopsy test Guardant360 to various regulatory bodies.