Associations between HLA-A, -B, and -C alleles and iodinated contrast media– induced hypersensitivity in Koreans
Translational and Clinical Pharmacology
; : 107-116, 2021.
Article
in En
| WPRIM
| ID: wpr-919399
Responsible library:
WPRO
ABSTRACT
A common cause of drug hypersensitivity reactions is iodinated contrast media (ICM). ICM-induced hypersensitivity had been considered to be a non-immunological reaction, but evidence for an immunological mechanism has increased recently. Thus, we evaluated whether HLA-A, -B, and -C alleles were associated with ICM-induced hypersensitivity. In total, 126 patients who underwent contrast-enhanced computed tomography studies through outpatient clinics at a tertiary referral hospital between 2008 and 2012 were assessed. Sixty-one patients experienced ICM-induced hypersensitivity and the remainder, 65, were ICM-tolerant patients (control). ICM-induced hypersensitivity patients showed 51 with immediate, 7 with non-immediate, 3 with both or mixed type. HLA-A, -B, and -C genotyping was performed using a PCR sequence-based typing method. Four kinds of ICM were used iopromide, iohexol, iobitridol, and iodixanol. The most used ICM among the hypersensitivity patients was iopromide. Significant difference in the frequency of HLA-B*5801 (odds ratios [OR], 3.90; p = 0.0200, 95% confidence interval [CI], 1.16–13.07) was observed between ICM-induced immediate hypersensitivity and control. There were statistically significant differences in the frequencies of the HLA-B*3802 (OR, 10.24; p = 0.0145; 95% CI, 1.09–96.14) and HLA-B*5801 (OR, 3.98; p = 0.0348; 95% CI, 1.03–15.39) between iopromide-induced immediate hypersensitivity and control. The mechanism of ICM-induced hypersensitivity remains unknown, but this study showed associations, although weak, with HLA-B*5801 alleles for ICM-induced immediate hypersensitivity and HLA-B*3802 and HLA-B*5801 for iopromideinduced immediate hypersensitivity as risk predictors. Further studies are needed to validate the associations in larger samples and to identify the functional mechanism behind these results.
Full text:
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Index:
WPRIM
Type of study:
Prognostic_studies
Language:
En
Journal:
Translational and Clinical Pharmacology
Year:
2021
Type:
Article