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Strong association between HLA-B*5801 and allopurinol-induced Stevens–Johnson syndrome and toxic epidermal necrolysis in a Thai population

Tassaneeyakul, Wichittra, Jantararoungtong, Thawinee, Chen, Pei, Lin, Pao-Yu, Tiamkao, Somsak, Khunarkornsiri, Usanee, Chucherd, Pachadaporn, Konyoung, Parinya, Vannaprasaht, Suda, Choonhakarn, Charoen, Pisuttimarn, Pornrith, Sangviroon, Alisara, Tassaneeyakul, Wongwiwat·2009·Pharmacogenetics and Genomics

Abstract

OBJECTIVES: Allopurinol, a uric acid lowering drug commonly used for hyperuricemia and gouty arthritis, has been reported as a common cause of severe cutaneous adverse drug reactions (SCAR) including Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN). A strong association between allopurinol-induced SCAR and HLA-B*5801 was observed in a Han Chinese population with high frequency of this allele, whereas only a moderate association was observed in populations with low frequency (i.e. European and Japanese). This study investigated the relationship between SJS/TEN and HLA-B*5801 in a Thai population that has a high allelic frequency of this allele. METHODS: Twenty-seven allopurinol-induced SJS/TEN and 54 allopurinol-tolerant patients were enrolled in the study. The presence of HLA-B*5801 and HLA-B genotypes in these patients were analyzed using a PG5801 DNA detection kit and sequence-based typing, respectively. RESULTS: All of the 27 (100%) allopurinol-induced SJS/TEN patients who were examined carried HLA-B*5801 whereas only seven (12.96%) of the control patients had this allele. The risk of allopurinol-induced SJS/TEN was significantly greater in patients with HLA-B*5801 when compared with those who did not carry this allele, with an odds ratio of 348.3 (95% confidence interval=19.2-6336.9, P = 1.6 x10). The sensitivity and specificity of the HLA-B*5801 allele for prediction of allopurinol-induced SJS/TEN were 100 and 87%, respectively. By assuming a 0.2% prevalence rate, the positive predictive value and the negative predictive value of the HLA-B*5801 allele was 1.52 and 100%, respectively. CONCLUSION: A strong association of allopurinol-induced SJS/TEN with the HLA-B*5801 allele was observed in a Thai population. The results suggest that HLA-B*5801 is a valid genetic marker for screening Thai individuals who may be at risk for allopurinol-induced life-threatening SJS and TEN.

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Metadata

Authors
Tassaneeyakul, W., Jantararoungtong, T., Chen, P., Lin, P.-Y., Tiamkao, S., Khunarkornsiri, U., Chucherd, P., Konyoung, P., Vannaprasaht, S., Choonhakarn, C., Pisuttimarn, P., Sangviroon, A., & Tassaneeyakul, W.
Venue
Pharmacogenetics and Genomics
Published
2009-09
Volume
19
Issue
9
Pages
704-709
ISSN
1744-6872 (ISSN-L)
OpenAlex
W2155931624
Cited by
401
References
20
FWCI
14.09
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Strong association between HLA-B*5801 and allopurinol-induced Stevens–Johnson syndrome and toxic epidermal necrolysis in a Thai population. https://app.cochat.ai/papers/10.1097/fpc.0b013e328330a3b8
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Tassaneeyakul, W., Jantararoungtong, T., Chen, P., Lin, P.-Y., Tiamkao, S., Khunarkornsiri, U., Chucherd, P., Konyoung, P., Vannaprasaht, S., Choonhakarn, C., Pisuttimarn, P., Sangviroon, A., & Tassaneeyakul, W. (2009). Strong association between HLA-B*5801 and allopurinol-induced Stevens–Johnson syndrome and toxic epidermal necrolysis in a Thai population. Pharmacogenetics and Genomics. https://doi.org/10.1097/fpc.0b013e328330a3b8

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