Role of Basophil Activation Testing in Allergy to Beta-Lactam Antibiotics
Author Information
Author(s): Reitmajer Markus, Strauss Antonia, Klinger Christian, Maaß Maximiliane, Kempf Wolfgang E., Fischer Joerg, Kneilling Manfred, Volc Sebastian
Primary Institution: Eberhard Karls University, Tuebingen, Germany
Hypothesis
What is the role of basophil activation testing in diagnosing type 1 allergy to beta-lactam antibiotics?
Conclusion
The basophil activation test shows specific positive results in patients with cephalosporin anaphylaxis but is not reliable for diagnosing beta-lactam allergies in general.
Supporting Evidence
- The basophil activation test showed a high specificity of 92.3%.
- The sensitivity of the basophil activation test was only 20.8%.
- Positive results were exclusively found in patients with grade II or higher anaphylaxis.
- Concordance between specific IgE and BAT results was moderate (κ=0.538).
- Excluding grade I patients improved the sensitivity of the test.
Takeaway
This study looked at how well a blood test called the basophil activation test works for people who think they are allergic to certain antibiotics. It found that the test is good for some cases but not for all.
Methodology
The study analyzed 34 patients with suspected type 1 allergy to beta-lactam antibiotics using basophil activation tests and correlated results with skin tests.
Potential Biases
Potential bias in patient selection and medical history documentation could affect the results.
Limitations
The study's findings may not be generalizable due to the small sample size and the retrospective nature of the analysis.
Participant Demographics
The cohort included 9 men (26.5%) and 25 women (73.5%) with a mean age of 50.68 years.
Statistical Information
P-Value
0.029
Confidence Interval
95% CI 66.7–98.6
Statistical Significance
p=0.029
Digital Object Identifier (DOI)
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