The AVENIO Tumor Tissue Surveillance Kit is an NGS assay that complements the AVENIO ctDNA Surveillance Kit designed for longitudinal monitoring of tumor burden, by establishing a baseline from formalin-fixed paraffin-embedded (FFPE) tissue samples. This assay contains 17 genes in NCCN1 and other guidelines, as well as an additional 180 genes that are used for tumor burden monitoring and MRD detection in lung cancer and colorectal cancer.