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Viracor Eurofins 'Viracor TRAC'

Viracor Eurofins has begun offering its Viracor TRAC donor-derived, cell-free DNA assay for diagnosing kidney transplant rejection. The noninvasive liquid biopsy test has similar characteristics to other donor-derived cfDNA assays on the market, Viracor Eurofins said. Two ongoing prospective and one retrospective clinical trials are underway to further develop clinical data to support use of the test. The current gold standard for diagnosing kidney transplant rejection and surveillance is organ biopsy, which is both expensive and can lead to multiple complications for the patient, the firm noted. 

The Scan

Two J&J Doses

Johnson & Johnson says two doses of its SARS-CoV-2 vaccine provides increased protection against symptomatic COVID-19, CNN reports.

Pfizer-BioNTech Vaccine Response in Kids

The Pfizer-BioNTech SARS-CoV-2 vaccine in a lower-dose format appears to generate an immune response among children, according to the Washington Post.

Chicken Changes to Prevent Disease

The Guardian writes that researchers are looking at gene editing chickens to help prevent future pandemics.

PNAS Papers on Siberian Dog Ancestry, Insect Reproduction, Hippocampal Neurogenesis

In PNAS this week: ancestry and admixture among Siberian dogs, hormone role in fruit fly reproduction, and more.