Evidence map›Paper›PMID 23396140›Full record

ArticleClinical chemistry2013

Measurement of thyroglobulin by liquid chromatography-tandem mass spectrometry in serum and plasma in the presence of antithyroglobulin autoantibodies.

Mark M Kushnir, Alan L Rockwood, William L Roberts, Dev Abraham, Andrew N Hoofnagle, A Wayne Meikle

Open access · bronzeAbstract readValidation Study
In one paragraph

Article in Clinical chemistry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed, 1 pooled it
15.1field-weighted citation impact, top 1% 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

66 citing papers in PubMed, 1 synthesis or guideline pooled it, 188 citations in OpenAlex.

  1. Guideline
  2. Article
  3. Article
  4. Review
  5. Review
  6. Review
  7. Article
  8. Article
  9. Review
  10. Review
  11. Plasma/Serum Proteomics based on Mass Spectrometry.Protein and peptide letters · 2024
    Review
  12. Cheaper, faster, simpler trypsin digestion for high-throughput targeted protein quantification.Journal of mass spectrometry and advances in the clinical lab · 2023
    Article
  13. Article
  14. Review
  15. Review
  16. Article
  17. Article
  18. A distributable LC-MS/MS method for the measurement of serum thyroglobulin.Journal of mass spectrometry and advances in the clinical lab · 2022
    Article
  19. The triple quadrupole: Innovation, serendipity and persistence.Journal of mass spectrometry and advances in the clinical lab · 2022
    Article
  20. Review

6 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 4 institutions in 1 country.

Mark M KushnirARUP Institute for Clinical and Experimental Pathology, Salt Lake City, UT 84108, USA. kushnmm@aruplab.com
Alan L Rockwood
William L Roberts
Dev Abraham
Andrew N Hoofnagle
A Wayne Meikle
ARUP Laboratories (United States) · USARUP Institute for Clinical and Experimental PathologyUniversity of Utah · USUniversity of Washington · US

Funding

Proteo-genomic Discovery, Prioritization and Verification of Cancer BiomarkersU24CA160034 · NCI · BROAD INSTITUTE, INC. · PI CARR, STEVEN A, PAULOVICH, AMANDA G · 2011 to 2016
$16.2M
NCI NIH HHS U24 CA160034NCI NIH HHS U24CA160034
6 · The paper itself

Abstract

backgroundMeasurement of serum thyroglobulin (Tg) is used to monitor patients after treatment for differentiated thyroid carcinoma (TC). Difficulty in using Tg as a biomarker of the recurrence of TC in many patients stems from the presence of endogenous anti-Tg autoantibodies (Tg-AAbs), which can interfere with immunoassays (IAs) and cause false-negative results.

methodsWe enriched Tg from serum samples using rabbit polyclonal anti-Tg antiserum and protein precipitation. Unrelated proteins were partially depleted in the process. Enriched proteins were then denatured, reduced, and digested with trypsin after the addition of a winged internal standard peptide. A Tg-specific tryptic peptide was purified by immunoaffinity extraction and analyzed by 2-dimensional LC-MS/MS. Instrument cycle time was 6.5 min per sample.

resultsThe lower limit of quantification was 0.5 ng/mL (0.76 fmol/mL dimer). Total imprecision of triplicate measurements in serum samples over 5 days was <10%. Comparison with a commercial IA using serum samples free of Tg-AAb (n = 73) showed Deming regression, IA = 1.00 * LC-MS/MS - 2.35, r = 0.982, standard error of the estimate (S(y|x)) = 9.52. In a set of Tg-AAb-positive samples that tested negative for Tg using IA (n = 71), concentrations determined by LC-MS/MS were ≥0.5 ng/mL in 23% of samples (median 1.2, range 0.7-11 ng/mL).

conclusionsThe introduced method has acceptable performance characteristics for use in clinical diagnostic applications. The most substantial disagreement between methods was observed in Tg-AAb-positive samples with concentrations <2 ng/mL (determined with LC-MS/MS). The affinity-assisted enrichment strategy used for Tg in this method should be applicable to other biomarkers that have endogenous autoantibodies.

Indexed as

Tandem Mass SpectrometryAdolescentAutoantibodiesBlood Chemical AnalysisChildChild, PreschoolChromatography, LiquidFalse Positive ReactionsFemaleHumansInfantLimit of DetectionMalePlasmaThyroglobulinanti-thyroglobulinAutoantibodiesThyroglobulin

Identifiers

PMID23396140
PMCPMC4016991
OpenAlexW2137904973

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

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.