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gLAMP Central

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gLAMP Consortium Review

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Templates

Infrastructure

Front

Stub

This page is a stub. Work in progress!

Element

Sub-page items, like info boxes.

Contents

Notice

Page

Whole-page layout boilerplate.

Topics

Physical

This page is a stub. Work in progress!

Copy Formatted

Code blocks with markdown syntax have a Copy Formatted button.

To access it, mouse over the dark blue box. A blue file icon will appear on the right side. You can click it to copy the box's content. Your clipboard will now paste pre-formatted content.

Editorial

API

This is an API endpoint man page.

Get Cakes

GET https://api.cakes.com/v1/cakes/:id

This endpoint allows you to get free cakes.

Path Parameters

Name
Type
Description

Query Parameters

Name
Type
Description

Headers

Name
Type
Description

Index

This page lists all gLAMP locations of note.

Collaboration

All Things gLAMP

FAQ

This is a FAQ.

Can I become who I want to be?

That's a tough question but thankfully, our team is on it. Please bear with us while we're investigating.

Guide

This is a guide.

Getting Super Powers

Becoming a super hero is a fairly straight forward process:

Super-powers are granted randomly so please submit an issue if you're not happy with yours.

Digital

This page is a stub. Work in progress!

Notes To Editors

Communications to Ron Orland, JBT and other JBT staff.

Content Removal Notice

This documentation page has been minimized and/or subpages have been pruned. This happens for one of, or a combination of, the following reasons:

Have you had a chance to answer the previous question?

Yes, after a few months we finally found the answer. Sadly, Mike is on vacations right now so I'm afraid we are not able to provide the answer at this point.

  • The contents needlessly aided confusion or clutter in current context.

  • The contents are no longer sufficiently synchronized to remain accurate, public notes.

  • The contents previously discussed publication-centric information. This content is of no public interest at this time. The authors have elected not to maintain indefinite public access — at least for now. Note that the lead authors are committed to maximal transparency and accessibility. All of the gLAMP Review's dependencies have been selected with open access in mind. Further, all published content tied to the review's process is being archived for public use. These web archives are a comprehensive snapshot of the LAMP landscape c. 2020-2021. They will be published in 2021 and remain available indefinitely thereafter. (One author directs a preservation nonprofit applying synbio technologies to 'GLAM')

  • id

    string

    ID of the cake to get, for free of course.

    recipe

    string

    The API will do its best to find a cake matching the provided recipe.

    gluten

    boolean

    Whether the cake should be gluten-free or not.

    Authentication

    string

    Authentication token to track down who is emptying our stocks.

    {    "name": "Cake's name",    "recipe": "Cake's recipe name",    "cake": "Binary cake"}
    {    "message": "Ain't no cake like that."}

    Body

    Documentation

    Back

    Feedback

    Community Comments

    Comments, Ideas, Suggestions

    This page is a stub. Work in progress!

    Contributor Comments

    Community Comments

    Glossary

    Documentation

    Once you're strong enough, save the world:

    $ give me super-powers
    hello.sh
    # Ain't no code for that yet, sorry
    echo 'You got to trust me on this, I saved the world'

    lamp.bio is the overall homepage.

  • docs.lamp.bio is the documentation hub.

  • Documents

    • LAMP Resources is a Google Drive folder currently housing miscellaneous documents.

    • Other resources will be added to this list over time.

    Library

    • Zotero is a reference manager with a web app, desktop apps, and group libraries.

    • A shared library is located here: zotero.org/groups/2644850/glamp_consortium.

    Protocols

    • TODO: add protocols group mention.

    Communication

    Discussion

    • Mailing List / Forum

      • groups.google.com/g/glamp is a Google Group.

        • This group currently serves as the collaborative's primary email-based hub.

        • Note: institutional and disciplinary overlap means this is not the only list!

    • Chat

      • is a Slack Chat.

        • This chat currently serves as the primary chat-based review hub.

    Events

    Call

    Usual Day

    Usual Time

    (Zoom)

    Mondays

    11:00 - 12:00 ET (US)

    Wednesdays

    12:15 - 13:15 ET (US)

    (Zoom)

    Thursdays

    12:00 - 13:00 ET (US)

    Schedule Changes

    • Since March 2021, gLAMP R&D calls have been reduced in frequency.

      • Calls were previously on a weekly schedule. They're now monthly.

      • Calls are on the first Thursday of the month, unless announced otherwise.

    • Since March 2021, gLAMP Review calls no longer occur on any fixed schedule.

      • The review has been submitted. Routine writing calls are no longer needed!

      • The standing zoom link remains available for miscellaneous use.

    • gLAMP Members: please feel free to use the 'Writing Call' zoom link for impromptu meets.

      • The 'Regular Call' zoom link is also Chris Mason's general lab meeting link!

      • So please prefer the otherwise-unused Writing link over that one, to avoid gatecrashing.

    About

    gLAMP

    Global LAMP Consortium

    The Global LAMP (gLAMP) Consortium was founded in April 2020, in the midst of the COVID-19 pandemic as a diverse group of stakeholders including scientists, engineers, physicians, educators, government officials, philanthropists, and more, who came together to address the global challenges in detecting SARS-CoV-2. As new results kept being reported on pre-prints posted on bioRxiv and medRxiv, it quickly became clear that LAMP technology showed great potential in providing rapid, accurate, and scalable diagnostics. Indeed, there are several different applications and approaches to LAMP methods that can be modified and adapted to various testing goals such as point-of-care clinical testing, community screening, monitoring city sewage samples, or swabbing urban spaces. gLAMP currently has over 300 members spanning academic labs, industry teams, non-profit, community biology, and government agencies. The group meets virtually every week to share IRB protocols, best practices, latest results from pilot experiments, reagent suppliers, and logistic experiences. The goal is to create an open environment where results can be shared to accelerate research as fast as possible and deploy the most optimal testing methods to the field.

    gLAMP Central

    gLAMP Central refers to planning around the creation of companion infrastructure to benefit ongoing gLAMP calls, in the spirit of "rough consensus and working code".

    gLAMP Review

    The gLAMP review is the first project resulting from gLAMP Central planning discussion. It is a collaborative synopsis of the key methods and developments shared over the course of 2020.

    Getting Involved

    There are multiple ways to get involved in gLAMP's ongoing efforts.

    If you wish to participate in a recurring call, please see .

    If you wish to participate in the review paper, please see or .

    If you are just looking for a gLAMP-related resource, check the .

    Removal

    Content Removal Notice

    This documentation page has been minimized and/or subpages have been pruned. This happens for one of, or a combination of, the following reasons:

    1. The contents needlessly aided confusion or clutter in current context.

    2. The contents are no longer sufficiently synchronized to remain accurate, public notes.

    3. The contents previously discussed publication-centric information. This content is of no public interest at this time. The authors have elected not to maintain indefinite public access — at least for now. Note that the lead authors are committed to maximal transparency and accessibility. All of the gLAMP Review's dependencies have been selected with open access in mind. Further, all published content tied to the review's process is being archived for public use. These web archives are a comprehensive snapshot of the LAMP landscape c. 2020-2021. They will be published in 2021 and remain available indefinitely thereafter. (One author directs a preservation nonprofit applying synbio technologies to )

    Style

    This page is a stub. Work in progress!

    Assets

    Events
    Manuscript
    Review Help
    Index
    'GLAM'
    glampconsortiumreview.slack.com
    gLAMP - Writing Call
    FDA - Town Hall
    gLAMP - Regular Call

    References

    Web-Only Resources

    Content

    Core Information for Ron Orlando, PhD and other JBT staff.

    Supplement

    2021-05-28.01

    3D set (posable)

    Description

    Format, Style

    Title

    Characters wearing masks / social distancing

    3D, realistic

    masked_1012_01

    Render of scene from masked_1012_01

    3D, realistic

    masked_1012_02

    Additional previews of masked_1012

    3D, realistic

    masked_1012_03

    Additional previews of masked_1012

    2021-05-16.01

    Rights: JC/Metamer

    Description

    Format, Style

    Title

    bottle + virions

    vector, flat, cartoon

    cute antiseptic bottle fight flat

    earth + virions

    vector, flat, cartoon

    cute earth and coronavirus characters

    doctor + virions

    vector, flat, cartoon

    doctor fight against coronavirus

    scientist + virions

    cute antiseptic bottle fight flat

    cute earth and coronavirus characters

    doctor fight against coronavirus

    medical scientist cleaning

    cute coronavirus characters

    Copy

    Annotations

    This page is a preview for JBT.

    Summary

    This page lists the annotated references of the manuscript. Annotations emphasize a subset of the bibliography entries. Each annotated entry receives:

    1. Prioritization on a 3-point scale as one of the following:

      1. a work of interest (•)

      2. a work of special interest (••)

      3. a work of outstanding interest (•••)

    The 3-point scale takes after the conventions of series such as Annual Reviews and Current Opinions. The descriptions follow an Elsevier Highlights rubric.

    ATTN JBT and Publisher

    1. An earlier FAQ, detailing further information, is available.

      See: .

    2. The Typesetting Sample subpage here describes the source material and desired output. See:

    3. The Items subpage here contains the fullest non-.bib draft of all annotated references.

      See:

    Peer Review

    Peer review from JBT publication process.

    This page is a stub. Work in progress!

    Guide

    Changelog

    All notable changes to this project will be documented here.

    Content Removal Notice

    This documentation page has been minimized and/or subpages have been pruned. This happens for one of, or a combination of, the following reasons:

    Aims

    This page documents the editorial aims that steered the writing process.

    This page is a stub. Work in progress!

    Time-Sensitive Claims

    Over the course of a series of writing and discussion sessions, we systematically audited the work for time-sensitive claims. Our essential objectives were the following:

    | Description | Format, Style | Title |
    |:------------|:--------------|:------|
    |             |               |       |
  • The contents needlessly aided confusion or clutter in current context.

  • The contents are no longer sufficiently synchronized to remain accurate, public notes.

  • The contents previously discussed publication-centric information. This content is of no public interest at this time. The authors have elected not to maintain indefinite public access — at least for now. Note that the lead authors are committed to maximal transparency and accessibility. All of the gLAMP Review's dependencies have been selected with open access in mind. Further, all published content tied to the review's process is being archived for public use. These web archives are a comprehensive snapshot of the LAMP landscape c. 2020-2021. They will be published in 2021 and remain available indefinitely thereafter. (One author directs a preservation nonprofit applying synbio technologies to 'GLAM')

    1. Minimize reliance on time-sensitive information related to the COVID-19 pandemic.

    2. Refer readers to reliable resources which we anticipate will continue to receive ongoing updates.

    3. Identify the set of time-sensitive claims which we consider to be irreducible.

    4. Plan to update those facts and figures from [3] at time of publication.

    Ultimately, we reduced the list of items in updates at publication time to two items:

    1. EUA Metadata: quantity, typological characteristics, and performance data for LAMP-based IVDs.

    2. Variant Analysis: VOCs, 'topline' summaries on primer impacts, etc.

    Viewpoints

    We have taken great care to be inclusive with respect to the work's many authors. We strongly feel that the breadth and depth of the authors' demographic and viewpoint diversity is to the work's ultimate benefit.

    Brief characterization of major findings and significance.

    Documentation > Content > Details
    Contents … Annotations > Typesetting Sample
    Contents … Annotations > Items
    Headings

    Summary

    As Of Date

    Reviewers

    Rounds

    Headings

    2021-06-01

    2

    1

    2021-05-25

    1

    1

    01.01

    01.01.00

    General Remarks

    Inline Comments

    0

    60

    02.01

    02.01.00

    General Remarks

    Inline Comments

    1

    0

    Recommendation: publish without scientific revision.

    It's a damn good paper. The manuscript is really beautiful – it's like they walk you step by step through each parameter! I'm jealous and wish I could write this well!!

    3D, realistic

    masked_1012_04

    vector, flat, cartoon

    medical scientist cleaning

    virions (multiple expressions)

    vector, flat, cartoon

    cute coronavirus characters

    Changelog

    This is a changelog.

    Changelog Format

    Boilerplate

    Code blocks with markdown syntax have a Copy Formatted button.

    To access it, mouse over the dark blue box. A blue file icon will appear on the right side. You can click it to copy the box's content. Your clipboard will now paste pre-formatted content.

    Legend

    X.Y - YYYY-MM-DD

    Does this version affect...

    • Frontmatter?

    • Bodymatter?

    • Topics?

    • Backmatter?

    Added

    • Added the platypus. That should keep them second-guessing for a while.

    Changed

    • Animals are now super cute, all of them.

    Fixed

    • Patched a bug where humans would develop language & tools, organize, and destroy each other.

    Removed

    • Removed deadly solar radiation.

    Attachments

    Files accompanying this revision/release will be found below:

    | Notation | Description             | Examples            |
    | -------- | ----------------------- | ------------------- |
    | XX.YY    | Reviewer.Round          | 01.01    , 02.01    |
    | XX.YY.00 | Reviewer.Round.Overview | 01.01.00 , 02.01.00 |
    | XX.YY.ZZ | Reviewer.Round.Comment  | 01.01.01 , 01.01.19 |
    
    01.01
    02.01

    Existing content has been removed.

    FIXED

    Existing content has been fixed.

    Key

    Value

    VERSION

    An identifier of the form D.D

    DATE

    The release date, written YYYY-MM-DD.

    AFFECTS

    The part has been modified in some way.

    ADDED

    There is new content.

    CHANGED

    There is a change to existing content.

    REMOVED

    # VERSION - DATE
    
    ## Affects
    
    | Does this version affect... | TRUE or FALSE |
    |:----------------------------|:--------------|
    | Front Matter?               | - [ ] FALSE   |
    | Body Matter?                | - [ ] FALSE   |
    | Topic Matter?               | - [x] TRUE    |
    | Back Matter?                | - [ ] FALSE   |
    
    ## Added
    
    ## Changed
    
    ## Removed
    
    ## Fixed
    End of Changelog

    Typesetting Sample

    Annotation Typesetting Sample for JBT

    Sample Information

    Citekey

    For illustrative purposes, we have selected Maranhao2020.

    Source

    Our bibliography is a .bib database. Each entry is structured data in bibtex format. An annotated entry's source is stored like so:

    In this source, the annote field contains the annotations.

    1. \onestar is priority 1 on the 1-3 scale, where 3 is highest.

    2. \\ is a line-separator.

    3. Further lines are highlight bullets on the cited work.

    Usage

    Inline Use

    We cite Maranhao2020 by its citekey, Maranhao2020. We do this using the \cite command, as in:

    Lorem ipsum dolor sit amet.\cite{Maranhao2020}

    In References

    Once rendered, this turns into a numeric value in brackets. If Maranhao2020 is reference number 4, for instance, the output is:

    Lorem ipsum dolor sit amet.[4]

    Appearance

    Current Appearance

    In our working draft's References section, Maranhao2020 renders like so:

    [4] Andre Maranho, Sanchita Bhadra, Inyup Paik, David Walker, and Andrew D. Ellington. 2020. An improved and readily available version of Bst DNA Polymerase for LAMP, and applications to COVID-19 diagnostics. (oct 2020). We can change this ourselves to achieve the desired appearance. Our understanding is that the publisher will not be retaining LaTeX-based styles, however.

    Desired Appearance

    We would like to see the priority (● - ●●●) prefixed prior to the reference's author(s) field. Additionally, we ask that the highlight bullets not make use of a circular item label, for clarity. An alternative shape, such as a diamond or square, would assist in providing contrast:

    [4] ● Andre Maranho, Sanchita Bhadra, Inyup Paik, David Walker, and Andrew D. Ellington. 2020. An improved and readily available version of Bst DNA Polymerase for LAMP, and applications to COVID-19 diagnostics. (oct 2020). ◇ Protein engineering fusion improves function of Bst DNA polymerase in LAMP ◇ Modifying Bst DNA polymerase significantly improves reverse transcriptase activity ◇ Further improves LAMP-OSD detection in pre-heated saliva without RNA extraction

    Fallback Appearance

    • If the is not possible:

      • Styles closer to the Current Opinions style are acceptable to us.

      • These styles are well-suited to flowing prose annotations.

    [4] Andre Maranho, Sanchita Bhadra, Inyup Paik, David Walker, and Andrew D. Ellington. 2020. An improved and readily available version of Bst DNA Polymerase for LAMP, and applications to COVID-19 diagnostics. (oct 2020). ● Protein engineering fusion improves function of Bst DNA polymerase in LAMP Modifying Bst DNA polymerase significantly improves reverse transcriptase activity Further improves LAMP-OSD detection in pre-heated saliva without RNA extraction

    Rubric

    Rubrics

    Annotations contain two parts: a priority and outline-style highlights. Therefore there are two rubrics.

    Highlights Rubric

    • 3-5 bullets

    • 85 character limit, including whitespace

    • no end punctuation

    Examples

      • Metastases mostly disseminate late from primary breast tumors, keeping most drivers

      • Drivers at relapse sample from a wider range of cancer genes than in primary tumors

    Priorities Rubric

    Save Your Time!

    The Priorities Rubric is simply the sum of tedious details regarding how we:

    Eventually, post-publication

    Code, an interactive citation graph, and other goodies used in this process will appear.

    Preparation

    • Each reference contains provenance tagging by section.

    • This group field allows us to analyze our citations.

    • We fetched further informative metadata via:

    Calculation

    We then tabulated two levels of citation analysis:

    1. First, we looked at descriptive statistics.

    2. Next, we calculated a few nontrivial measures.

    3. Finally, we did a qualitative rundown of known-significant works and how we cited them.

    Descriptive Stats

    Descriptive stats of relevance include:

    1. citation frequency,

    2. citation centrality,

    3. between-section differences, and so forth.

    Statistical Measures

    Statistical measures of relevance include:

    1. mutual and interaction information,

    2. graphical properties — especially cliques and skew partitions,

    3. "standard" citation analysis benchmarks, and so forth.

    4. Finally, we

    • This ultimately the combined multi-bibliography by factors like:

      • citation frequency,

      • citation centrality, and

    Evolution

    This section is a stub. Notes on how we arrived at these outcomes to appear.

    Basics (FAQ)

    About

    What is the gLAMP Review?

    See: About § gLAMP Review

    When are things happening?

    2020 schedules were not carried over from prior docs.

    Authorship

    What is the authorship model?

    1. ‘Football team’ of co-authors and supporting contributors.

    2. Co-authors help to write, collate, and synthesize contributions.

    3. Sections prioritize topics of importance to the collective.

    Who is a section lead?

    Section Leads are corresponding authors for their respective sections.

    Who is a contributor?

    Volunteering Contributors write one or more elements for inclusion (½-¾ page each). We expect these contributions to be ‘close to home’ for the contributor and hence not a significant overhead to write. These can be a cliff note summary of a contributor’s presentation to a Thursday gLAMP, of a preprint, or a summary of an aspect of LAMP testing literature that they have particularly focused on.

    Solicited Contributors are individuals that section leads will contact with a request for ½-¾ page on a particular topic for which we currently do not have coverage. If subsequent encouragement is needed, please let us know.

    Who gets writing credit?

    Everyone who contributes to the review will receive authorship credit.

    Guidelines

    Instructions for Authors?

    For various other matters, refer to journal guides:

    • ​ [​ , ​]

    • [​ , ​]

    • [​​]

    Tools for figures?

    Biorender and any visualization tool you might require.

    Can contributions be graphical abstracts?

    Yes.

    More

    Looking for old notes?

    Early notes were collated at .

    Looking for something else?

    We have everything from the duration of the gLAMP review writing period. Are you looking for something that seems to be missing? Let Jeremy and Keith know. We'll make it more visible.

    Mutations in SWI-SNF complex and inactivated JAK-STAT signaling enriched at relapse
  • Mutational processes similar in primary and relapse; radiotherapy can damage genome

  • Learning and Instruction, Volume 21, Issue 6, December 2011, 746-756

    • Fading of a script alone does not foster domain-general strategy knowledge

    • Performance of the strategy declines during the fading of a script

    • Monitoring by a peer keeps performance of the strategy up during script fading

    • Performance of a strategy after fading fosters domain-general strategy knowledge

    • Fading and monitoring by a peer combined foster domain-general strategy knowledge

  • Identified which references to annotate, and
  • Distributed those items with scores on a 1-3 scale, in a matter we found reasonable.

  • So, full disclosure: this information is under-documented for now. It's also only relevant for internal purposes at this point, if at all.

    first-party literature analysis,
  • third-party machine-learning platforms, and

  • third-party query services such as Crossref.

  • citation mutual / interaction information wit

    Cancer Cell, Volume 32, Issue 2, 14 August 2017, Pages 169-184.e7
    ¹
    ²
    Journal of Biomolecular Techniques (JBT)
    archive.org
    archive.is
    Current Opinion in Biotechnology (COBIOT)
    archive.is
    archive.org
    Nature Biotechnology (NBT)
    archive.is
    gLAMP Review Notes
    They do not meld well with itemized, highlight-style annotations, however.
  • What Changes

    • These styles place the priority marker inline with the first line of annotation text.

  • https://doi.org/10.1101/2020.10.02.20203356
    https://doi.org/10.1101/2020.10.02.20203356
    desired appearance
    https://doi.org/10.1101/2020.10.02.20203356
    @Article{Maranhao2020,
      author    = {Andre Maranhao and Sanchita Bhadra and Inyup Paik and David Walker and Andrew D. Ellington},
      title     = {An improved and readily available version of Bst {DNA} Polymerase for {LAMP}, and applications to {COVID}-19 diagnostics},
      year      = {2020},
      month     = {oct},
      doi       = {10.1101/2020.10.02.20203356},
      groups    = {04-target-amplification, has-annotation, 10.08-bst-polymerase-biology},
      publisher = {Cold Spring Harbor Laboratory},
      timestamp = {2020-12-17},
      annote    = {%
                   \onestar\\
                   Protein engineering fusion improves function of Bst DNA polymerase in  LAMP\\
                   Modifying Bst DNA polymerase significantly improves reverse transcriptase activity\\
                   Further improves LAMP-OSD detection in pre-heated saliva without RNA extraction\\
                 %}
    }

    Structure

    Overview

    The gLAMP Review is a multi-component project. It consists of a variety of files and moving parts. We have used certain conventions to aid in tracking these parts.

    • The overall assembly is partitioned into four (4) parts.

    • Each part contains sections.

    • Every element has an index in a sectioning scheme.

    • This scheme consists of indices of the form DD.DD.DD.

    Table of Contents

    • Front Matter

      • 00 Metadata

        • 00.01 People

    00.02 Publication
  • 00.03 Usage

  • 01 Opening Remarks

    • 01.01 Dedication

    • 01.02 Preface

  • Body Matter

    • 02 Tour

      • 02.01 Outlines

        • 02.01.01 Table of Contents

        • 02.01.02 List of Figures

        • 02.01.03 List of Tables

      • 02.02 Tips For Readers

        • 02.02.01

        • 02.02.02

        • 02.02.03

    • 03 Introduction

    • 04 Samples

    • 05 Amplification

    • 06 Detection

    • 07 Infrastructure

    • 08 Regulations

    • 09 Discussion

  • Topics

    • 10A Review Highlights and Takeaways

      • 10.01 Take Away Summary

      • 10.02 Mental Models

      • 10.03 Cold Spring Harbor

    • 10B LAMP in the 'Real World'

      • 10.04 Schools

      • 10.05 LMIC

        • 10.05.01 ASSURED/REASSURED

    • 10C Emerging Protocols and Methods

      • 10.07 Variants and Sequencing

        • 10.07.01 On Mutations

    • 10D Biotechnology

      • 10.10 LAMP Reader App

      • 10.11 BioRanger

      • 10.12 GeneMe

  • Back Matter

    • 11.01 Index

    • 11.02 Glossary

    • 11.03 References

    • 11.04 Supplement

      • 11.04.01 Code

      • 11.04.02 Data

      • 11.04.03 Tables

    • 11.05 Web Resources

      • 11.05.01 Accessibility (Audio)

      • 11.05.02 Interactives

      • 11.05.03 Updates

  • Part

    Sections

    Front Matter

    00 - 01

    Body Matter

    02 - 09

    Topic Matter

    10

    Back Matter

    11

  • 10.05.02 SE Asia Case Study

  • 10.06 Wastewater Surveillance

  • 10.07.02 Selected SARS-CoV-2 Primers
  • 10.08 Bst polymerase biology

  • 10.09 LAMP on Paper

  • 10.13 Axxin Fluorimeter

    Details

    Extended details of authorship and structure.

    Authorship

    Item

    Description

    Front Matter

    • JC and KM are the main authors of the front matter.

    • CM and ST have provided additional input/suggestions.

    Body Matter

    Scope

    *Emerging Technologies

    • What happened to the Emerging Technologies section?

      • The following sections merged, forming Infrastructure:

        • Emerging Technologies

    Copyright, Permissions

    01 Opening Remarks

    Dedication

    Preface

    Introductory remarks of a broad-ranging nature. Placement: standalone item preceding the review.

    02 Tour

    Outlines

    Provides standard introductory outlines, ex.

    • Table of Contents

    • List of Figures

    • List of Tables

    Tips For Readers

    Provides reader guide to using the work

    TOC For Topics

    Provides call-out text (preview) for Topic Matter.

    Layout: textbook 'box' style.

    Placement: directly preceding introduction.

    03 Introduction

    Content (cf. editorial) introduction. Discusses COVID-19 and LAMP.

    04 Samples

    Discusses samples and preanalytic processing.

    05 Amplification

    Discusses amplification with LAMP.

    06 Detection

    Discusses detection methods and techniques.

    07 Infrastructure

    Discusses technical and social infrastructure, incl.

    • bioware ('wet' biotechnology)

    • hardware & software ('dry')

    • organizations.

    08 Regulations

    Discusses regulatory landscape for SARS-CoV-2.

    09 Discussion

    Provides closing remarks for Body Matter. Discusses normative recommendations.

    10 Topics

    Discusses specialist topics in four clusters.

    11 Back Matter

    Pertains to all end matter, 'extras', and SI.

    Index

    Provides an index of terms used in the work.

    Glossary

    Provides definitions of terms used in the work.

    References

    Provides details of cited works, including

    • annotations

    • priorities

    • standard bibliometric information.

    Supplement

    Provides code, data, tables, and other SI.

    Web Resources

    Provides links to external SI, including:

    • narration of the work

    • interactive versions of figures

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    There are 36 annotated items in total.

    Annotated References

    Alekseenko, A., Barrett, D., Pareja-Sanchez, Y., Howard, R. J., Strandback, E., Ampah-Korsah, H., Rovšnik, U., Zuniga-Veliz, S., Klenov, A., Malloo, J., Ye, S., Liu, X., Reinius, B., Elsässer, S. J., Nyman, T., Sandh, G., Yin, X., & Pelechano, V. (2021). Direct detection of SARS-CoV-2 using non-commercial RT-LAMP reagents on heat-inactivated samples. Scientific reports, 11(1), 1820. https://doi.org/10.1038/s41598-020-80352-8

    • STARS: 2

    • ANNOTE

      • RT-LAMP detects medium-high viral loads in swabs without RNA extraction and purification

      • Describes homebrew production of B.stearothermophilus Bst-LF ‘v5.9’ from Ellington et al

      • Provides an alternative to commercial reagents for RT-LAMP based SARS-COv2 detection.

    Becherer, L N. Borst, M. Bakheit, S. Frischmann, R. Zengerle, and F. von Stetten, “Loop-mediated isothermal amplification (LAMP) – review and classification of methods for sequence-specific detection,” Analytical Methods, vol. 12, no. 6, pp. 717–746, 2020.

    • STARS: 2

    • ANNOTE

      • LAMP has a propensity to create non-specific amplicons caused by mis-priming

      • Sequence-specific amplicon detection can significantly increase LAMP specificity

    Ben-Assa, N et al. , “Direct on-the-spot detection of SARS-CoV-2 in patients,” Experimental Biology and Medicine; , vol. 245, no. 14, pp. 1187–1193, jul 2020.

    • STARS: 1

    • ANNOTE

      • An early report of the use of saliva (cf. UTM/VTM) in pH-based colourimetric RT-LAMP

      • Simplified sample processing with proteinase K prior to heating and the RT-LAMP test

    Bektas, A., Covington, M., Aidelberg, G., Arce, A., Matute, T., N\'u\~nez, I., Walsh, J., Boutboul, D., Lindner, A., Federici, F., & Jayaprakash, A. (2021). Accessible LAMP-Enabled Rapid Test (ALERT) for detecting SARS-CoV-2. medRxiv.

    • STARS: 3

    • ANNOTE

      • ALERT: a streamlined process that improves overall LAMP performance and usability

      • Separating RT reaction from LAMP significantly improves limit of detection

    Bhadra, S., Riedel, T., Lakhotia,S., Tran, N.D., and Ellington, A. High-surety isothermal amplification and detection of SARS-CoV-2, including with crude enzymes bioRxiv 2020.04.13.039941; doi: ; Now accepted for publication in mSphere

    • STARS: 3

    • ANNOTE

      • Converts three assays using non-specific to a sequence-specific fluorescence readout

      • One-strand displacement (OSD) creates a stable, multicolor readout for saliva LAMP

    Broughton, J et al. , “CRISPR–cas12-based detection of SARS-CoV-2,” Nature Biotechnology , vol. 38, no. 7, pp. 870–874, apr 2020.

    • STARS: 1

    • ANNOTE

      • The CRISPR-Cas system detects E and N gene sequences by using specific guide RNA

      • Once bound to cDNA amplified by RT-LAMP, collateral Cas12 ssDNase activity is activated

    Corman, V. M., Landt, O., Kaiser, M., Molenkamp, R., Meijer, A., Chu, D. K., Bleicker, T., Brünink, S., Schneider, J., Schmidt, M. L., Mulders, D. G., Haagmans, B. L., van der Veer, B., van den Brink, S., Wijsman, L., Goderski, G., Romette, J. L., Ellis, J., Zambon, M., Peiris, M., … Drosten, C. (2020). Detection of 2019 novel coronavirus (2019-nCoV) by real-time RT-PCR. Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin, 25(3), 2000045.

    • STARS: 2

    • ANNOTE

      • Early reference paper, endorsed by the WHO, on which many RT-qPCR tests were based

      • Created a workflow for detecting SARS-CoV-2 vs. other human respiratory viruses

    de Oliveira Coelho, B., Sanchuki, H., Zanette, D. L., Nardin, J. M., Morales, H., Fornazari, B., Aoki, M. N., & Blanes, L. (2021). Essential properties and pitfalls of colorimetric Reverse Transcription Loop-mediated Isothermal Amplification as a point-of-care test for SARS-CoV-2 diagnosis. Molecular medicine (Cambridge, Mass.), 27(1), 30.

    • STARS: 2

    • ANNOTE

      • Diagnostic comparison (94% sensitivity, 90% specificity) using RNA extracted from NPS

      • Highlights an intermediate orange result when using a pH sensitive readout (red or yellow)

    Ding, Sheng, et al. “Sequence-Specific and Multiplex Detection of COVID-19 Virus (SARS-CoV-2) Using Proofreading Enzyme-Mediated Probe Cleavage Coupled with Isothermal Amplification.” Biosensors & Bioelectronics, vol. 178, Apr. 2021, p. 113041. .

    • STARS: 1

    • ANNOTE

      • Addresses the false positives arising from lack of sequence-specificity in many LAMP readouts

      • Uses Pfu proof-reading enzyme-mediated probe cleavage (RT-Proofman-LAMP)

    Maranhao, Andre, et al. An Improved and Readily Available Version of Bst DNA Polymerase for LAMP, and Applications to COVID-19 Diagnostics. preprint, Infectious Diseases (except HIV/AIDS), 5 Oct. 2020. .

    • STARS: 1

    • ANNOTE

      • Protein engineering fusion improves function of Bst DNA polymerase in LAMP

      • Modifying Bst DNA polymerase significantly improves reverse transcriptase activity

    Fowler, V. L., Armson, B., Gonzales, J. L., Wise, E. L., Howson, E., Vincent-Mistiaen, Z., Fouch, S., Maltby, C. J., Grippon, S., Munro, S., Jones, L., Holmes, T., Tillyer, C., Elwell, J., Sowood, A., de Peyer, O., Dixon, S., Hatcher, T., Patrick, H., Laxman, S., … Kidd, S. P. (2021). A highly effective reverse-transcription loop-mediated isothermal amplification (RT-LAMP) assay for the rapid detection of SARS-CoV-2 infection. The Journal of infection, 82(1), 117–125.

    • STARS: 2

    • ANNOTE

      • Reports a novel RT-LAMP assay with 97% and 99% clinical sensitivity and specificity, respectively

      • Almost perfect agreement with RNA RT-LAMP (extracted RNA) and RT-qPCR

    Ganguli, A., Mostafa, A., Berger, J., Aydin, M., Sun, F., Valera, E., Cunningham, B. T., King, W. P., & Bashir, R. (2020). Rapid Isothermal Amplification and Portable Detection System for SARS-CoV-2. bioRxiv : the preprint server for biology, 2020.05.21.108381.

    • STARS: 1

    • ANNOTE

      • Introduces an RNA extraction-free method from patient swab samples via heat-lysis

      • Microfluidic-phone camera example of portable hardware system for biosurveillance

    Garneret, P., Coz, E., Martin, E., Manuguerra, J. C., Brient-Litzler, E., Enouf, V., González Obando, D. F., Olivo-Marin, J. C., Monti, F., van der Werf, S., Vanhomwegen, J., & Tabeling, P. (2021). Performing point-of-care molecular testing for SARS-CoV-2 with RNA extraction and isothermal amplification. PloS one, 16(1), e0243712.

    • STARS: 1

    • ANNOTE

      • COVIDISC, a paper-based fabricated portable device for point-of-care testing

      • Combines RNA extraction and running RT-LAMP reactions in one device

    James, P., Stoddart, D., Harrington, E., Beaulaurier, J., Ly, L., Reid, S., Turner, D., & Juul, S. (2020). LamPORE: rapid, accurate and highly scalable molecular screening for SARS-CoV-2 infection, based on nanopore sequencing. medRxiv.

    • STARS: 2

    • ANNOTE

      • LAMPoreTM combines triplexed SARS-CoV-2 detection and nanopore DNA sequencing

      • Performs 96 reactions in two hours with good concordance with RT-qPCR using swab samples

    Jureka, A. S., Silvas, J. A., & Basler, C. F. (2020). Propagation, Inactivation, and Safety Testing of SARS-CoV-2. Viruses, 12(6), 622.

    • STARS: 1

    • ANNOTE

      • Important methods and considerations for live viral manipulation/inactivation

      • Propagation of SARS-CoV-2 in different cell lines to augment supply of control RNA

    Kahl, L., Molloy, J., Patron, N. et al. Opening options for material transfer. Nat Biotechnol 36, 923–927 (2018).

    • STARS: 2

    • ANNOTE

      • Introduces the principles of Open Material Transfer Agreements in the open bioeconomy

      • Relaxes the outdated restrictions on redistribution and commercial use of biological materials

    Kellner, M., Ross, J., Schnabl, J., Dekens, M., Heinen, R., Grishkovskaya, I., Bauer, B., Stadlmann, J., Menéndez-Arias, L., Fritsche-Polanz, R., Traugott, M., Seitz, T., Zoufaly, A., Födinger, M., Wenisch, C., Zuber, J., , Pauli, A., & Brennecke, J. (2020). A rapid, highly sensitive and open-access SARS-CoV-2 detection assay for laboratory and home testing. bioRxiv.

    • STARS: 3

    • ANNOTE

      • Introduces an extraction-free pH buffered Hydroxynapthol blue (HNB)-based RT-LAMP

      • Highlights the use of the dUTP/UDG system to prevent carryover contamination

    Larremore, D., Wilder, B., Lester, E., Shehata, S., Burke, J., Hay, J., Tambe, M., Mina, M., & Parker, R. (2020). Test sensitivity is secondary to frequency and turnaround time for COVID-19 surveillance. medRxiv.

    • STARS: 2

    • ANNOTE

      • Challenges the assumption that clinical sensitivity is paramount for effective surveillance

      • Highlights the importance of testing frequency and reporting speed

    Mina, M. J., Parker, R., & Larremore, D. B. (2020). Rethinking Covid-19 Test Sensitivity - A Strategy for Containment. The New England journal of medicine, 383(22), e120.

    • STARS: 3

    • ANNOTE

      • Reframes and challenges the current predominant view on COVID-19 testing sensitivity

      • Highlights that analytical sensitivity and clinical sensitivity are not the same

    Moehling, T. J., Choi, G., Dugan, L. C., Salit, M., & Meagher, R. J. (2021). LAMP Diagnostics at the Point-of-Care: Emerging Trends and Perspectives for the Developer Community. Expert review of molecular diagnostics, 21(1), 43–61.

    • STARS: 1

    • ANNOTE

      • Complementary review providing valuable insights on development of LAMP diagnostics

      • Describes advantages and disadvantages of different human samples

    Natoli, M., Kundrod, K., Chang, M., Smith, C., Paul, S., Eldin, K., Patel, K., Baker, E., Schmeler, K., & Richards-Kortum, R. (2021). Reverse transcription loop-mediated isothermal amplification (Rt-lamp) for point-of-care detection of SARS-CoV-2: A clinical study to evaluate agreement with RT-qPCR. The Lancet. Global Health, 9, S3.

    • STARS: 1

    • ANNOTE

      • Evaluates the clinical performance of NPS-based but extraction-free RT-LAMP test

      • Performance (92% sensitivity, 91% specificity) was maintained using a lower-cost reader

    Notomi, T., Okayama, H., Masubuchi, H., Yonekawa, T., Watanabe, K., Amino, N., & Hase, T. (2000). Loop-mediated isothermal amplification of DNA. Nucleic acids research, 28(12), E63.

    • STARS: 3

    • ANNOTE

      • Pioneer LAMP paper: introduces LAMP as a novel DNA amplification method

      • Highly specific and sensitive isothermal amplification with a strand-displacing polymerase

    Rabe, B. A., & Cepko, C. (2020). SARS-CoV-2 detection using isothermal amplification and a rapid, inexpensive protocol for sample inactivation and purification. Proceedings of the National Academy of Sciences of the United States of America, 117(39), 24450–24458.

    • STARS: 3

    • ANNOTE

      • Pivotal paper for low-cost RNA extraction-free methods from human samples

      • A basis for many succeeding papers that uses heat/TCEP/EDTA to inactivate RNases

    Sherrill-Mix, S., Duyne, G., & Bushman, F. (2021a). Molecular beacons allow specific RT-LAMP detection of B.1.1.7 variant SARS-CoV-2. medRxiv.

    • STARS: 2

    • ANNOTE

      • Demonstrates the ability of hybridisation-based molecular beacons to detect variants

      • Pilot study on variant-discrimination for SARS-CoV-2 (S1∆69-70 deletion)

    Sherrill-Mix, S., Hwang, Y., Roche, A., Glascock, A., Weiss, S., Li, Y., Haddad, L., Deraska, P., Monahan, C., Kromer, A., Graham-Wooten, J., Taylor, L., Abella, B., Ganguly, A., Collman, R., Van Duyne, G., & Bushman, F. (2021b). LAMP-BEAC: Detection of SARS-CoV-2 RNA Using RT-LAMP and Molecular Beacons. medRxiv.

    • STARS: 3

    • ANNOTE

      • Excellent example of use of molecular beacons for sequence-specific amplicon detection

      • Addresses the false positives arising LAMP to improve reliability and sensitivity of a test

    Snodgrass, R., Gardner, A., Semeere, A., Kopparthy, V. L., Duru, J., Maurer, T., Martin, J., Cesarman, E., & Erickson, D. (2018). A portable device for nucleic acid quantification powered by sunlight, a flame or electricity. Nature biomedical engineering, 2(9), 657–665.

    • STARS: 1

    • ANNOTE

      • Addresses poor diagnostic infrastructure due unreliable access to electricity in Africa

      • TINY: portable microfluidic LAMP device, operating with electricity and alternative power sources

    Tan, S. H.; Allicock, O.; Armstrong-Hough, M. & Wyllie, A. L. Saliva as a gold-standard sample for SARS-CoV-2 detection The Lancet Respiratory Medicine, Elsevier BV, 2021, 9, 562-564

    • STARS: 3

    • ANNOTE

      • Mini-review summarising the potential and pitfalls of using saliva as a biospecimen

      • Focus is on collection, handling, transport, and storage of saliva relative to NPS

    Tanner, N. A., Zhang, Y., & Evans, T. C. (2012). Simultaneous multiple target detection in real-time loop-mediated isothermal amplification. BioTechniques, 53(2), 81–89. https://doi.org/10.2144/0000113902

    • STARS: 1

    • ANNOTE

      • First report of ‘DARQ’ fluorescent LAMP for multiplexed detection of four targets

      • Initial reports of the widely-used Bst 2.0 and WarmStart Bst 2.0 DNA polymerases

    Vogels, C., Watkins, A. E., Harden, C. A., Brackney, D. E., Shafer, J., Wang, J., Caraballo, C., Kalinich, C. C., Ott, I. M., Fauver, J. R., Kudo, E., Lu, P., Venkataraman, A., Tokuyama, M., Moore, A. J., Muenker, M. C., Casanovas-Massana, A., Fournier, J., Bermejo, S., Campbell, M., … Grubaugh, N. D. (2021). SalivaDirect: A simplified and flexible platform to enhance SARS-CoV-2 testing capacity. Med (New York, N.Y.), 2(3), 263–280.e6.

    • STARS: 2

    • ANNOTE

      • First saliva-based SARS-CoV-2 detection to be granted EUA by the FDA

      • Led to increased awareness and interest in saliva as a biospecimen type

    Wang, Rui, et al. “OpvCRISPR: One-Pot Visual RT-LAMP-CRISPR Platform for SARS-Cov-2 Detection.” Biosensors and Bioelectronics, vol. 172, Jan. 2021, p. 112766. .

    • STARS: 2

    • ANNOTE

      • CRISPR incorporates gRNA for specificity with enzymatic amplification to increase sensitivity.

      • Incorporating CRISPR-Cas12a improves LAMP sensitivity by a factor of 10

    Wölfel, R., Corman, V.M., Guggemos, W. et al. Virological assessment of hospitalized patients with COVID-2019. Nature 581, 465–469 (2020).

    • STARS: 2

    • ANNOTE

      • Early report monitoring the viral load, replication rates and clinical symptoms from nine COVID cases

      • Respiratory samples with < 10^6 copies per mL did not yield a replicative isolate

    Yan, C., et al. “Rapid and Visual Detection of 2019 Novel Coronavirus (SARS-CoV-2) by a Reverse Transcription Loop-Mediated Isothermal Amplification Assay.” Clinical Microbiology and Infection, vol. 26, no. 6, June 2020, pp. 773–79. .

    • STARS: 2

    • ANNOTE

      • Thorough description of primer design strategy to create primer sets for orf1ab and S genes.

      • First to demonstrate 100% sensitivity and 100% specificity on clinical samples via visual readout

    Yang, Q., Meyerson, N. R., Clark, S. K., Paige, C. L., Fattor, W. T., Gilchrist, A. R., Barbachano-Guerrero, A., Healy, B. G., Worden-Sapper, E. R., Wu, S. S., Muhlrad, D., Decker, C. J., Saldi, T. K., Lasda, E., Gonzales, P., Fink, M. R., Tat, K. L., Hager, C. R., Davis, J. C., … Sawyer, S. L. (2021). Saliva TwoStep for rapid detection of asymptomatic SARS-CoV-2 carriers. ELife, 10, e65113. .

    • STARS: 1

    • ANNOTE

      • Saliva-based detection of SARS-CoV-2 in asymptomatic individuals at 94% sensitivity

      • Neutralising saliva stabilisation solution with Proteinase K for saliva-based RT-LAMP

    Yaren, O., McCarter, J., Phadke, N., Bradley, K. M., Overton, B., Yang, Z., Ranade, S., Patil, K., Bangale, R., & Benner, S. A. (2021). Ultra-rapid detection of SARS-CoV-2 in public workspace environments. PloS one, 16(2), e0240524.

    • STARS: 3

    • ANNOTE

      • Development of a sequence-specific method for amplicon detection (displaceable probe, DP)

      • Reports successful use of two COVID-19 primer sets with Rnase P and DP in a single tube assay

    Zhang, Y., Odiwuor, N., Xiong, J., Sun, L., Nyaruaba, R., Wei, H., & Tanner, N. (2020). Rapid Molecular Detection of SARS-CoV-2 (COVID-19) Virus RNA Using Colorimetric LAMP. medRxiv.

    • STARS: 2

    • ANNOTE

      • An early paper demonstrating the feasibility of SARS-CoV-2 detection using RT-LAMP

      • Vital study that designed five LAMP primer sets targeting SARS-CoV-2 RNA

    Zhang, Yinhua, and Nathan A. Tanner. Development of Multiplexed RT-LAMP for Detection of SARS-CoV-2 and Influenza Viral RNA. preprint, Epidemiology, 27 Oct. 2020. .

    • STARS: 3

    • ANNOTE

      • Describes application of DARQ for sequence-specific detection of SARS-CoV2 amplicons

      • Multiplexing of SARS-CoV2 and influenza virus as pathogens leading to similar symptoms

  • The Review provides a systematic, comprehensive summary to the analytical options

  • Several of the fluorescent methods described have been applied to SARS-CoV2 LAMP

  • We foresee an ever-increasing proportion of multiplexed, multicolour LAMP tests

  • Clinical testing yielded acceptable sensitivity equivalent to RT-qPCR cut-off Ct ≲ 29

  • Provides a good example of method development and initial clinical validation

  • Sequence-specific QUASR probe improves specificity, reducing false positive rates

  • Co-detection with other respiratory viruses by multiplexing with QUASR fluorescent probes

  • Use of wax layers to lengthen reagent shelf-life of ready-to-use mixes at room temperature

  • One-pot reactions assembled using ‘homebrew’ enzyme reagents

  • Highly versatile multiplex method well-suited to primary screening in resource limited settings

  • One of a core of ~ 5-6 sequence-specific methods which we foresee to increase in use

  • The ssDNase activity can be readily monitored by quenched fluorescence or lateral flow

  • With a LoD ~ 10 copies/uL, the DETECTR system demonstrated 95% sensitivity/100% specificity

  • CRISPR has potential to increase specificity and sensitivity albeit at the cost of complexity

  • RNA controls are made available through European Virus Archive (EVAg)

  • Research and RNA controls made possible by widespread coordination across the EU.

  • Orange readout is characteristic of samples with corresponding RT-qPCR ≥ 30 Ct.

  • Insight into a range of low/indeterminate viral load where confirmatory testing is required.

  • Real-time or end-point monitoring in a closed-tube format suitable for point-of-care testing

  • Sequence-specificity enables multiplexing COVID-19 genes and internal control amplicons

  • Recent addition to the list of multiplexed, sequence specific detection methods for LAMP

  • Further improves LAMP-OSD detection in pre-heated saliva without RNA extraction

  • Proposes replacing RT-qPCR with RNA RT-LAMP for higher throughput

  • Suggests using direct RT-LAMP (1:20 VTM dilution) for screening the highly infectious

  • With VTM, comparable analytical sensitivity and specificity vs RT-qPCR

  • Cost-effective at $2-4 per device, removing the need for complex instruments.

  • Example of the potential for integrating sequencing with LAMP e.g for variant detection.

  • Lists various viral Inactivation methods to allow research be done at lower biosafety levels

  • Better adapted to current research practices allowing broder sharing of materials and technology

  • Improves LAMP sensitivity through RNA purification via use of magnetic beads

  • Compares commercial and homebrew LAMP enzymes to develop lower-cost test

  • A comprehensive and highly cited paper from the influential Vienna group

  • High frequency and large scale testing is more effective than high sensitivity

  • Clinical sensitivity cannot be simply be defined by the limit of analytical detection

  • Provides rationale for widespread use of LAMP with more rapid reporting than qPCR.

  • Recommends that clinical sensitivity be contextualized and defined as fit-for-purpose

  • Highlights mispriming in saliva-based LAMP as a source of false positives

  • Emphasizes the need for sequence-specific detection, e.g QUASR, to increase specificity.

  • An example of many such studies reporting comparable performance of LAMP vs qPCR

  • Initial paper describes use of 4 primers; later extended to include 2 Loop primers

  • Methodology is operationally simple but mechanistically and bioinformatically complex

  • Bead-based and extraction-free (‘direct’) RT-LAMP methods are described in detail.

  • Demonstrates that NaI-based inactivation and purification system improves LAMP sensitivity

  • Targeted approach that aids in managing and containing the spread of the COVID-19 variants

  • Unique and characteristic melt curves provide additional level of specificity

  • Demonstrated multiplexed detection with extraction-free saliva RT-LAMP.

  • 94% agreement between TINY and commercial PCR for the detection of herpesvirus

  • Example of small, simple devices for PCR that can be applied to LAMP.

  • Comprehensive Supplementary Information tabulating large number of comparative studies

  • Discusses points of disagreement regarding performance of saliva- vs NPS-based tests

  • A balanced minireview but with clear advocacy for saliva if carefully collected and processed.

  • Bst 2.0 speeds up the LAMP reaction signal by 50% over wild-type Bst DNA polymerase

  • Using RT-qPCR, SalivaDirect and nasopharyngeal swabs have high positive agreement (94%)

  • Early example of a viable cost-effective alternative method to improve accessibility

  • opvCRISPR combines RT-LAMP and CRISPR-Cas12a with a colorimetric readout in a single well

  • Clinically, 100% positive agreement between RT-qPCR and opvCRISPR

  • Alternative CRISPR methods use Cas13 rather than Cas12.

  • Discharge is proposed for patients beyond day 10 or with < 100000 viral RNA copies / mL.

  • Both criteria predict low residual risk of infectivity based on cell culture.

  • Analytical LoD of RT-qPCR far exceeds the clinically relevant viral loads for many patients

  • Provides data to determine what is a functionally important sensitivity for LAMP tests.

  • The LAMP assay discriminates SARS-CoV-2 from 60 other respiratory pathogens

  • Highlights value of having multiple primer sets to discriminate related viruses

  • Good example of a design to method development to clinical validation study

  • Example of addressing need for simple and portable yet reliable test for biosurveillance

  • Simplified cost-effective RNA extraction-free method suitable for large scale testing

  • Highlights the value of widespread, frequent testing of asymptomatics - ‘test often, test quickly’.

  • The primers could reliably detect 120 copies/reaction using colorimetric (pH-based) LAMP

  • Served as foundation for many succeeding (colorimetric) RT-LAMP COVID-19 papers

  • Related to another sequence-specific detection method (QUASR, Betkas et al., 2021)

  • Enables real-time fluorescence monitoring c.f end-point measurement for QUASR

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    https://doi.org/10.1016/S2214-109X(21)00111-X
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    https://doi.org/10.1101/2020.10.26.20219972