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Madeleine Johnson

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Madeleine covers PCR, nucleic acid amplification, and sample prep technologies for GenomeWeb and 360Dx. 

Articles Authored by Madeleine Johnson

Nov 20, 2020

Illumina, IDbyDNA Flesh Out Sequencing-Based Respiratory Tests

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The two firms aim to bring down costs and turnaround time with two newly-launched sequencing tests for respiratory pathogens, RVOP 2 and Explify RPIP.

Nov 18, 2020

Lab Directors Discuss Unprecedented Challenges and Scrambling for Solutions During COVID-19 Pandemic

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In a conversation at the Association for Molecular Pathology meeting, the directors touched on topics such as test allocation and staffing and reagent shortages.

Nov 17, 2020

SpeeDx Expanding MDx Portfolio With Respiratory Virus Host-Response Test

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The Sydney, Australia-based firm has licensed a single biomarker which it plans to develop into a test for triaging COVID-19 patients.

Nov 06, 2020

Multiplex PCR Panels for Joint Infections on the Horizon

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BioFire has submitted a 39-target test to the US Food and Drug Administration. OpGen also has a test in development.

Nov 03, 2020

Natera Aims to Improve Prospera Kidney Test After Findings Reveal Cell-Free DNA Changes in Infection

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The firm recently described circumstances in which the fraction of host or donor DNA could be altered, and plans new approaches to data interpretation.

Oct 30, 2020

Quidel Expects SARS-CoV-2 Testing Demand to Continue 'Through 2022, and Beyond'

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Quidel expects to launch at least four new products over the next year and commented on its overall COVID-19 strategy, as well as R&D plans, M&A possibilities, and other updates.

Oct 16, 2020

Interdisciplinary NIST Team Claims qPCR Improvements Using Unusual Math Tweaks

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A recent study showed that a method called affine transformation can be used to increase the number of true positive qPCR samples detected.

Oct 12, 2020

Africa Pathogen Genomics Initiative Launches With $100M Investment

The initiative will build up pathogen sequencing capacity through investment from the Gates Foundation, Microsoft, Illumina, and Oxford Nanopore.

Oct 09, 2020

India Banks on Decentralized Molecular COVID-19 Testing

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With nearly 7 million COVID-19 cases, the country is expanding near-patient strategies historically deployed for tuberculosis testing for SARS-CoV-2 testing.

Oct 07, 2020

FDA Will No Longer Review EUA Submissions for SARS-CoV-2 Lab-Developed Tests

The agency provided the update on Wednesday in its weekly virtual town hall and on its FAQ page.

The Scan

Earlier in the US

An analysis of blood donations suggests SARS-CoV-2 was present in the US weeks earlier than thought, according to NPR.

How the Proteins Shape Up

The Guardian reports that DeepMind Technologies' AlphaFold can predict how proteins fold.

Who's to Be First?

CNBC reports that a US Centers for Disease Control and Prevention advisory panel is to vote on how to distribute COVID-19 vaccines.

PNAS Papers on Ovarian Cancer, Retrotransposon Insertions in Cancer, Malaria Mosquitoes

In PNAS this week: targeting progesterone signaling in ovarian cancer, LINE-1 retrotransposition events in adenocarcinomas, and more.

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