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Biocept Progesterone Receptor Liquid Biopsy Test

Biocept has announced the commercial availability of its liquid biopsy test for progesterone receptor (PR), which can be used for the detection and monitoring of a key biomarker in the blood of patients with breast cancer. The company noted that the ability to detect PR expression in circulating tumor cells complements its existing ER and HER2 assays for biomarker analysis in breast cancer. Biocept's Target Selector PR expression test is performed on circulating tumor cells using fluorescently labeled antibodies. The company's liquid biopsy tests are performed in its CLIA-certified, CAP-accredited laboratory in San Diego.

The Scan

Booster for At-Risk

The New York Times reports that the US Food and Drug Administration has authorized a third dose of the Pfizer-BioNTech SARS-CoV-2 vaccine for people over 65 or at increased risk.

Preprints OK to Mention Again

Nature News reports the Australian Research Council has changed its new policy and now allows preprints to be cited in grant applications.

Hundreds of Millions More to Share

The US plans to purchase and donate 500 million additional SARS-CoV-2 vaccine doses, according to the Washington Post.

Nature Papers Examine Molecular Program Differences Influencing Neural Cells, Population History of Polynesia

In Nature this week: changes in molecular program during embryonic development leads to different neural cell types, and more.