Evidence map›Paper›PMID 30939225›Full record

ArticleJournal of veterinary internal medicine2019

Polymerase chain reaction for antigen receptor rearrangement: Benchmarking performance of a lymphoid clonality assay in diverse canine sample types.

E J Ehrhart, Shukmei Wong, Keith Richter, Victoria Zismann, Carolyn Grimes, William Hendricks, Chand Khanna

Open access · goldAbstract readValidation Study
In one paragraph

Article in Journal of veterinary internal medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.0field-weighted citation impact, top 22% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 18 citations in OpenAlex.

  1. Article
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  3. Review
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  5. Characterization of CD3+/CD20+ canine large-cell lymphoma.Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc · 2024
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  8. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 2 countries.

E J EhrhartEthos Discovery, San Diego, California.
Shukmei WongIntegrated Cancer Genomics Division, The Translational Genomics Research Institute (TGen), Phoenix, Arizona.
Keith RichterEthos Discovery, San Diego, California.
Victoria ZismannIntegrated Cancer Genomics Division, The Translational Genomics Research Institute (TGen), Phoenix, Arizona.
Carolyn GrimesEthos Discovery, San Diego, California.
William HendricksIntegrated Cancer Genomics Division, The Translational Genomics Research Institute (TGen), Phoenix, Arizona.ORCID https://orcid.org/0000-0001-7192-8699
Chand KhannaEthos Discovery, San Diego, California.
Ethos (United Kingdom) · GBTranslational Genomics Research Institute · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPolymerase chain reaction for antigen receptor rearrangement (PARR) is a molecular diagnostic tool used for discrimination of lymphoid malignancies in dogs from benign processes. Assay variations have been described and are commercially available, but performance metrics are not uniformly reported.

objectivesTo describe performance (accuracy, sensitivity, specificity) and rigorous benchmarking of a PARR protocol (ePARR) in clinically relevant samples. ANIMALS: One hundred eighty-one client-owned dogs.

methodsLymphoma and benign tissues representative of the clinical spectrum with gold standard histopathologic and immunohistochemical diagnoses were collected. Assay development and benchmarking were performed on fresh frozen (FF) tissue, formalin-fixed paraffin-embedded (FFPE) tissue, flow cytometry pellets, and air-dried fine-needle aspirates (FNA). Assay performance was determined for FFPE from 56 dogs (18 B-cell lymphoma, 24 T-cell lymphoma, and 14 non-lymphoma), 80 frozen flow cytometry pellets (66 B-cell lymphoma, 14 T-cell lymphoma, 0 non-lymphoma), and 41 air-dried FNA slides (23 lymphoma, 18 non-lymphoma).

resultsFor discrimination of lymphoma versus non-lymphoma, ePARR had 92% and 92% sensitivity and specificity on FFPE with 92% accuracy, 85% sensitivity from flow cytometry pellets (non-lymphoma was not evaluated to calculate specificity) with 85% accuracy, and 100% and 100% sensitivity and specificity for FNA with 100% accuracy. Stringent quality control criteria decreased assay success rate without significant performance improvement. Performance metrics were lower in most cases for discrimination of B- or T-cell versus non-B- or non-T-cell samples than for lymphoma versus non-lymphoma. CONCLUSIONS AND CLINICAL IMPORTANCE: These benchmarking data facilitate effective interpretation and application of PARR assays in multiple sample types.

Indexed as

Gene RearrangementAnimalsBenchmarkingDog DiseasesDogsImmunophenotypingLymphomaLymphoma, B-CellLymphoma, T-CellPolymerase Chain ReactionProspective StudiesReceptors, AntigenReceptors, Antigenclonalitydiagnosislymphomamolecular diagnosticPCR for antigen receptor rearrangement (PARR)

Identifiers

PMID30939225
PMCPMC6524097
OpenAlexW2932247778

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.