Cited by 415Diabetes and associated disordersDiabetes Management and ResearchAutoimmune Neurological Disorders and Treatments

A novel radioligand binding assay to determine diagnostic accuracy of isoform-specific glutamic acid decarboxylase antibodies in childhood IDDM

Open access
Grubin, C. E., Daniels, T., Toivola, B., Landin-Olsson, M., Hagopian, W. A., Li, L., Karlsen, A. E., Boel, E. +2 more·1994·Diabetologia

Abstract

Insulin-dependent diabetes mellitus (IDDM) is associated with autoreactivity against GAD but the diagnostic sensitivity (positivity in disease) and specificity (negativity in health) of isoform-specific GAD antibodies have yet to be defined in assay systems suitable for screening large number of samples. One set of IDDM patient (n = 10) and control (n = 50) standard sera were used to develop quantitative antibody assays with in vitro synthesized recombinant 35S-methionine-labelled GAD65 and GAD67, respectively, and protein A-Sepharose to separate free from antibody-bound ligand. Binding levels were not normally distributed (p < 0.0001) and therefore, the diagnostic accuracy of GAD antibodies was analysed by the ROC plots in population-based, consecutively-diagnosed, recent onset, 0-14 year-old patients (n = 105), and matched, healthy control subjects (n = 157). The ROC plots showed that the diagnostic sensitivity of GAD65 antibodies was 77% and the specificity 92% compared with 8% and 98%, respectively for GAD67 antibodies. In the IDDM sera, GAD65 and GAD67 antibodies were concordant in 7% (6 of 81) and GAD65 antibodies and ICA in 89% (72 of 81) without a correlation between the autoantibody levels. Autoantibodies to recombinant human islet GAD65 are specific and sensitive markers for childhood IDDM in this immunoassay with in vitro synthesized 35S-methionine-labelled recombinant GAD.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1007/bf00408469

Cites

41 of 41 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Grubin, C. E., Daniels, T., Toivola, B., Landin-Olsson, M., Hagopian, W. A., Li, L., Karlsen, A. E., Boel, E., Michelsen, B., & Lernmark, �.
Affiliations
  • University of Washington (US)
  • Novo Nordisk (Denmark) (DK)
Venue
Diabetologia
Published
1994-04
Volume
37
Issue
4
Pages
344-350
ISSN
  • 0012-186X (ISSN-L)
  • 1432-0428
OpenAlex
W2059144476
Cited by
415
References
41
Citations by year
2026: 2 · 2025: 2 · 2024: 6 · 2023: 6 · 2022: 3 · 2021: 3 · 2020: 4 · 2019: 5 · 2018: 7 · 2017: 6 · 2016: 5 · 2015: 8 · 2014: 7 · 2013: 15 · 2012: 12
FWCI
13.05
Type
journal article
Language
en
Open access
Locations
  • Diabetologia (publishedVersion)
  • PubMed (publishedVersion)
  • Lund University Publications (Lund University) (submittedVersion)
Funders
  • National Institutes of Health (5r01dk033873-06, 5p01dk041801-05)
  • Medical Research Council
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK41801, DK-26190, DK33873, R01DK026190)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Diabetes and associated disorders
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
  • Health Sciences › Medicine › Neurology › Autoimmune Neurological Disorders and Treatments
Keywords
type 1 diabetes, GAD65 antibodies, glutamic acid decarboxylase, autoantibodies, radioligand binding assay, diagnostic accuracy, sensitivity and specificity, pediatric diabetes, islet cell antibodies, autoimmunity
MeSH terms
Adolescent, Adult, Autoantibodies, Child, Diabetes Mellitus, Type 1, False Positive Reactions, Female, Glutamate Decarboxylase, Humans, Islets of Langerhans, Isoenzymes, Male, Middle Aged, Predictive Value of Tests, Radioligand Assay, Recombinant Proteins, Sensitivity and Specificity, Autoimmunity

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review