Haystack Oncology Inc. has launched with a $56 million series A round to commercialize technology using circulating tumor DNA (ctDNA) to detect minimal residual disease (MRD) following surgery for early-stage cancers.

HKSH Medical Group (HKSH) has adopted droplet digital polymerase chain reaction (ddPCR) for minimal residual disease (MRD) monitoring to track the status of patients with leukemia.

Guardant Health Inc. tripled the number of cancers that can be monitored for minimal residual disease (MRD) or risk of recurrence using its Reveal liquid biopsy, adding breast and lung cancers. The test is currently used to detect circulating tumor DNA in blood for patients treated for stage II or III colorectal cancer (CRC).

C2i Genomics Inc. reported the formal launch of its C2inform minimal residual disease diagnostic across Europe, after obtaining CE marking for the cancer test. The Cambridge, Mass.-based company also has completed several clinical trials it ran with research partners to validate the technology and will be presenting data in different cancers at the American Association for Cancer Research in New Orleans, April 8-13.

Inivata Ltd. published new data from a prospective clinical study assessing its Radar diagnostic test in head and neck squamous cell carcinoma (HNSCC). Results from the Liquid Biopsy for Minimal Disease Detection in HNSCC (LIONESS) study suggest the assay demonstrated 100% specificity in patients with no recurrence and 100% sensitivity in patients with clinical recurrence. The personalized assay can track up to 48 tumor-specific variants in a patient using a blood sample. Last year the test was granted breakthrough device designation by the FDA.

Foresight Diagnostics Inc. has developed a circulating tumor DNA (ctDNA) detection platform for detecting minimal residual disease (MRD) in B-cell lymphomas, a form of non-Hodgkin lymphoma and the most common lymphoma in the U.S., accounting for about 85% of all cases. Now, it has published data showing its phased variant enrichment detection sequencing (PhasED-Seq) nearly doubled the identification of patients with aggressive lymphoma who were not cured by standard therapy and need new treatment options.