TIMER2.0 for analysis of tumor-infiltrating immune cells

Taiwen Li, Jingxin Fu, Zexian Zeng, David Cohen, Jing Li, Qianming Chen, Bo Li, X. Shirley Liu · Nucleic Acids Research · 2020 · medicine · 10.1093/nar/gkaa407 · record li2020-timer2-0-for-analysis-of-tumor-inf
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Other fields define these differently the same word, defined another way in another discipline
deconvolution 2 fields

Tags on this paper

Every tag the record carries, each linking to every other paper in the corpus that carries it. A tag appears here whether or not its words occur in the article — the spans below are only the ones a sentence in this paper licenses. Of the 4 concept tags on this paper, all 4 are grounded in a quoted sentence. All carry the tagger's gloss of what the term means in this paper, which is not something the article can license.
deconvolution cell fractions xCell TIMER tissue specificity system-or-tool-building
Method, as described: six published algorithms - gene-signature and deconvolution based - applied uniformly to TCGA and to user-supplied profiles, with a heatmap over cancer types

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relation to other workclaim_relationshow this paper stands to another: agrees, contradicts, extends, qualifies
claim typeclaim_typethe shape of the claim: existence, mechanism, method, critique, prediction, null
conceptconceptsan idea the paper works with, quoted where the paper uses it
content tagcontent_tagsa finding, definition, quantity, statistic or variable named in the paper
contributioncontributionwhat the paper claims to add
controlcontrolsan experiment run to eliminate a rival explanation
limitationlimitationswhat the paper says its evidence cannot support
mechanismmechanismshow the reported effect is said to come about
methodmethodhow the paper produced its evidence
object of studyobject_of_studywhat the paper is about — the thing it investigates
phenomenonphenomenonthe effect or regularity under study
research questionresearch_questionthe question the paper sets itself
sensesensesa distinct use of a term, quoted where the paper fixes it

The paper

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Every tag on this page

claim_relations 2 · claim_type 1 · concepts 4 · content_tags 8 · contribution 1 · controls 3 · limitations 5 · mechanisms 1 · method 1 · object_of_study 1 · phenomenon 1 · research_question 1 · senses 3

This record holds no relations between concepts. A layer is empty when the tagger recorded nothing in it — which is not the same as the paper having nothing to record.

facettagfieldconf.whose words
object_of_studyimmune cell composition of tumours - a quantity that is inferred from bulk transcriptome rather than counted, by six different algorithms
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
object_of_studythe paper's words
research_questionhow to make immune-infiltration estimates from public tumour data usable without committing to any one inference algorithm
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
research_questionthe paper's words
contributiona web platform that runs six estimation algorithms over uniformly pre-processed TCGA data and shows their outputs side by side
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contributionthe paper's words
claim_typemethod
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claim_typethe paper's words
phenomenontumour immune infiltration, whose direct measurement is limited enough that the field works from computational inference instead
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phenomenonthe paper's words
methodsystem-or-tool-building
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methodthe paper's words
mechanismsgene-signature methods score cell-type-specific gene sets INDEPENDENTLY per cell type; deconvolution methods model the tissue's expression as a WEIGHTED SUM of the component cells' profiles. Two different mathematical objects behind one output name
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
mechanisms[0]0.95the tagger's words
limitationsTHE QUANTITY IS NOT MEASURED. `Due to the limitations of direct measurement methods, computational algorithms are often used to infer immune cell composition` - and the transcriptome `does not immediately indicate` it
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limitations[0]0.95the tagger's words
limitationsSIX ALGORITHMS, ONE OUTPUT NAME, AND ONLY TWO PRODUCE A QUANTITY ON A MEANINGFUL SCALE: `EPIC and quanTIseq have the advantage of directly generating scores interpreted as cell fractions`. The other four produce enrichment scores displayed beside them
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limitations[1]0.95the tagger's words
limitationseach algorithm is named with its own failure: TIMER handles tissue specificity but covers only six cell types, xCell covers more but MAY FAIL TO DETECT SIGNALS FROM HOMOGENEOUS SAMPLES
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limitations[2]0.95the tagger's words
limitationsthe justification for running all six is a HOPE, in the authors' own word: `We hope that evaluating estimations from multiple algorithms might help the user gain more comprehensive and robust results`
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limitations[3]0.95the tagger's words
limitationsand the cross-species use is caveated where it is offered: mouse estimations `should be interpreted with caution since human and the mouse tumors may have different immune properties`
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limitations[4]0.95the tagger's words
controlsall TCGA samples are pre-processed UNIFORMLY before the six algorithms run, so the estimates differ by algorithm and not by pipeline
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
eliminates: disagreement between algorithms that is really disagreement between normalisations - which is the only way the side-by-side display could mean anything · outcome: held
controls[0]0.95the tagger's words
controlswhether the six estimates are on the same scale
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
eliminates: nothing - EPIC and quanTIseq generate cell fractions and the rest do not, and the platform shows all six together without reconciling them · outcome: failed
controls[1]0.95the tagger's words
controlswhether running six algorithms actually yields more robust results
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
eliminates: nothing that is demonstrated here - the claim is 'We hope ... might help', with no comparison against single-algorithm use reported · outcome: absent-declared-unreported
controls[2]0.95the tagger's words
conceptsdeconvolution
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: deconvolution
concepts[0]0.95the paper's words
conceptscell fractions
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
concepts[1]0.95the paper's words
conceptsxCell
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: xCell
concepts[2]0.95the paper's words
conceptsTIMER
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: TIMER
concepts[3]0.95the paper's words
sensesimmune infiltration level - AS DELIVERED BY THIS PLATFORM, SIX DIFFERENT QUANTITIES UNDER ONE HEADING. Two are cell fractions, four are enrichment scores, and the platform's design is to show them together rather than to reconcile them. THE NAME IS THE ONLY THING THE SIX SHARE
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[0]0.95the tagger's words
sensesestimation, AS OPPOSED TO MEASUREMENT - the paper's own framing throughout, and it is honest: direct measurement is limited, so the field infers. Every number this server is cited for is downstream of that sentence
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[1]0.95the tagger's words
sensesrobustness, AS THIS PLATFORM OPERATIONALISES IT: agreement across six algorithms, displayed for the user to judge. Not a statistic, not a test - A LAYOUT. And the authors say they HOPE it helps
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[2]0.95the tagger's words
claim_relationscritiques → reliance on any single immune-infiltration algorithm, since the two families have variable performance advantages across cell types and tumours
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
claim_relations[0]0.95the tagger's words
claim_relationsextends → the original TIMER web server, which used one algorithm where this uses six
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
claim_relations[1]0.95the tagger's words
content_tagsTHE QUANTITY IS INFERRED, NOT MEASURED: due to the limitations of direct measurement methods, immune cell composition is computed from bulk transcriptome
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[0]0.95the tagger's words
content_tagsEPIC and quanTIseq directly generate scores interpreted as cell fractions
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[1]0.95the tagger's words
content_tagseach algorithm carries its own failure mode - TIMER covers only six cell types, xCell may fail to detect signals from homogeneous samples
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[2]0.95the tagger's words
content_tagsthe reason for running all six is stated as a HOPE: `We hope that evaluating estimations from multiple algorithms might help the user gain more comprehensive and robust results`
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[3]0.95the tagger's words
content_tagsmouse estimations SHOULD BE INTERPRETED WITH CAUTION because human and mouse tumours may have different immune properties - the caveat is placed where the feature is offered
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[4]0.95the tagger's words
content_tagsmethods that model the gene expression of a tissue sample as the weighted sum of the expression profiles from the cells in the population mix
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: Deconvolution
content_tags.definitions[0]0.95the tagger's words
content_tagsdeconvolution
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: deconvolution
content_tags.statistics[0]0.95the tagger's words
content_tagstissue specificity
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.variables[0]0.95the tagger's words

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