High serum β-lactams specific/total IgE ratio is associated with immediate reactions to β-lactams antibiotics

Alessandra Vultaggio, Gianni Virgili, Francesco Gaeta, Antonino Romano, Enrico Maggi, Andrea Matucci

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Total serum IgE result from the combination of specific and non-specific pools. High specific/ total IgE ratio may reflect high level of allergen-specific IgE on mast cells. No data regarding its applications to drug allergies is available. One hundred seventy-one patients with a history of immediate reactions to β-lactams, confirmed by positive skin testing, and 122 control subjects tolerant to β-lactams, were studied. CAP System was used for the detection of serum total and specific IgE antibodies. The specific/total IgE ratio was tested for diagnostic accuracy compared with conventional criteria.We finally performed a simulation study to expand our investigation of the performance of the specific/total IgE ratio index in a scenario in which the new CAP detection threshold is lowered further. Specific/total IgE ratio values ≥0.002 were observed more frequently in reactive than in controls. Seventy-four of 80 subjects with values ≥0.002 were allergic to β-lactams, yielding a positive predictive value of 92.5%. The application of specific/total IgE ratio significantly improves the positive likelihood ratio and the overall diagnostic performance. In addition, we showed the capability of this new criterion to identify true reactive patients even among subjects with high levels of total IgE (>200 kU/L). Significant increase in both receiver operator characteristic (ROC) curve and sensitivity were observed in imputed case of the simulation study. The β-lactams-specific/total IgE ratio may be an additional index compared to the common criterion of positivity to a single hapten in the allergological work-up of patients with β-lactams immediate adverse reactions.

Original languageEnglish
Article numbere0121857
JournalPLoS One
Volume10
Issue number4
DOIs
Publication statusPublished - Apr 16 2015

Fingerprint

lactams
Lactams
Immunoglobulin E
antibiotics
Anti-Bacterial Agents
Serum
haptens
mast cells
allergens
skin (animal)
hypersensitivity
detection limit
Allergies
Drug Hypersensitivity
drugs
antibodies
Haptens
Mast Cells
Allergens
Skin

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

Cite this

High serum β-lactams specific/total IgE ratio is associated with immediate reactions to β-lactams antibiotics. / Vultaggio, Alessandra; Virgili, Gianni; Gaeta, Francesco; Romano, Antonino; Maggi, Enrico; Matucci, Andrea.

In: PLoS One, Vol. 10, No. 4, e0121857, 16.04.2015.

Research output: Contribution to journalArticle

Vultaggio, Alessandra ; Virgili, Gianni ; Gaeta, Francesco ; Romano, Antonino ; Maggi, Enrico ; Matucci, Andrea. / High serum β-lactams specific/total IgE ratio is associated with immediate reactions to β-lactams antibiotics. In: PLoS One. 2015 ; Vol. 10, No. 4.
@article{efc13a36258f45fb905cef9d4d5d0d9d,
title = "High serum β-lactams specific/total IgE ratio is associated with immediate reactions to β-lactams antibiotics",
abstract = "Total serum IgE result from the combination of specific and non-specific pools. High specific/ total IgE ratio may reflect high level of allergen-specific IgE on mast cells. No data regarding its applications to drug allergies is available. One hundred seventy-one patients with a history of immediate reactions to β-lactams, confirmed by positive skin testing, and 122 control subjects tolerant to β-lactams, were studied. CAP System was used for the detection of serum total and specific IgE antibodies. The specific/total IgE ratio was tested for diagnostic accuracy compared with conventional criteria.We finally performed a simulation study to expand our investigation of the performance of the specific/total IgE ratio index in a scenario in which the new CAP detection threshold is lowered further. Specific/total IgE ratio values ≥0.002 were observed more frequently in reactive than in controls. Seventy-four of 80 subjects with values ≥0.002 were allergic to β-lactams, yielding a positive predictive value of 92.5{\%}. The application of specific/total IgE ratio significantly improves the positive likelihood ratio and the overall diagnostic performance. In addition, we showed the capability of this new criterion to identify true reactive patients even among subjects with high levels of total IgE (>200 kU/L). Significant increase in both receiver operator characteristic (ROC) curve and sensitivity were observed in imputed case of the simulation study. The β-lactams-specific/total IgE ratio may be an additional index compared to the common criterion of positivity to a single hapten in the allergological work-up of patients with β-lactams immediate adverse reactions.",
author = "Alessandra Vultaggio and Gianni Virgili and Francesco Gaeta and Antonino Romano and Enrico Maggi and Andrea Matucci",
year = "2015",
month = "4",
day = "16",
doi = "10.1371/journal.pone.0121857",
language = "English",
volume = "10",
journal = "PLoS One",
issn = "1932-6203",
publisher = "Public Library of Science",
number = "4",

}

TY - JOUR

T1 - High serum β-lactams specific/total IgE ratio is associated with immediate reactions to β-lactams antibiotics

AU - Vultaggio, Alessandra

AU - Virgili, Gianni

AU - Gaeta, Francesco

AU - Romano, Antonino

AU - Maggi, Enrico

AU - Matucci, Andrea

PY - 2015/4/16

Y1 - 2015/4/16

N2 - Total serum IgE result from the combination of specific and non-specific pools. High specific/ total IgE ratio may reflect high level of allergen-specific IgE on mast cells. No data regarding its applications to drug allergies is available. One hundred seventy-one patients with a history of immediate reactions to β-lactams, confirmed by positive skin testing, and 122 control subjects tolerant to β-lactams, were studied. CAP System was used for the detection of serum total and specific IgE antibodies. The specific/total IgE ratio was tested for diagnostic accuracy compared with conventional criteria.We finally performed a simulation study to expand our investigation of the performance of the specific/total IgE ratio index in a scenario in which the new CAP detection threshold is lowered further. Specific/total IgE ratio values ≥0.002 were observed more frequently in reactive than in controls. Seventy-four of 80 subjects with values ≥0.002 were allergic to β-lactams, yielding a positive predictive value of 92.5%. The application of specific/total IgE ratio significantly improves the positive likelihood ratio and the overall diagnostic performance. In addition, we showed the capability of this new criterion to identify true reactive patients even among subjects with high levels of total IgE (>200 kU/L). Significant increase in both receiver operator characteristic (ROC) curve and sensitivity were observed in imputed case of the simulation study. The β-lactams-specific/total IgE ratio may be an additional index compared to the common criterion of positivity to a single hapten in the allergological work-up of patients with β-lactams immediate adverse reactions.

AB - Total serum IgE result from the combination of specific and non-specific pools. High specific/ total IgE ratio may reflect high level of allergen-specific IgE on mast cells. No data regarding its applications to drug allergies is available. One hundred seventy-one patients with a history of immediate reactions to β-lactams, confirmed by positive skin testing, and 122 control subjects tolerant to β-lactams, were studied. CAP System was used for the detection of serum total and specific IgE antibodies. The specific/total IgE ratio was tested for diagnostic accuracy compared with conventional criteria.We finally performed a simulation study to expand our investigation of the performance of the specific/total IgE ratio index in a scenario in which the new CAP detection threshold is lowered further. Specific/total IgE ratio values ≥0.002 were observed more frequently in reactive than in controls. Seventy-four of 80 subjects with values ≥0.002 were allergic to β-lactams, yielding a positive predictive value of 92.5%. The application of specific/total IgE ratio significantly improves the positive likelihood ratio and the overall diagnostic performance. In addition, we showed the capability of this new criterion to identify true reactive patients even among subjects with high levels of total IgE (>200 kU/L). Significant increase in both receiver operator characteristic (ROC) curve and sensitivity were observed in imputed case of the simulation study. The β-lactams-specific/total IgE ratio may be an additional index compared to the common criterion of positivity to a single hapten in the allergological work-up of patients with β-lactams immediate adverse reactions.

UR - http://www.scopus.com/inward/record.url?scp=84928254089&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84928254089&partnerID=8YFLogxK

U2 - 10.1371/journal.pone.0121857

DO - 10.1371/journal.pone.0121857

M3 - Article

C2 - 25880869

AN - SCOPUS:84928254089

VL - 10

JO - PLoS One

JF - PLoS One

SN - 1932-6203

IS - 4

M1 - e0121857

ER -