Causative drugs and HLA-B polymorphism in drug-induced Stevens-Johnson syndrome - toxic epidermal necrolysis: A study in five hospitals in Jakarta

Stevens-Johnson syndrome and toxic epidermal necrolysis is a very rare but lifethreatening form of cutaneous drug eruption. In recent years, several countries in Asia had succeded in preventing carbamazepine induced SJS/TEN by screening for HLA-B*15:02 before prescribing carbamazepine. This study aimed to acquire data regarding causative drugs and HLA-B allele polymorphism in SJS/TEN patient in Jakarta. We acquired data from 5 referral hospitals from March 2015 to March 2017. Subject fulfilling the inclusion and exclusion criteria was interviewed and blood sample was taken for DNA extraction. The DNA was examined with PCR SSOP and Luminex technology for high resolution HLA-B typing. We studied 22 subjects. The median age was 45,4 years old (14-74). The most common causative drug in this study is carbamazepine. HLA-B*15:02 and HLAB* 18:01 were the most common allele in all subjects. HLA-B*15:02 was found in five (72%) out of seven subjects whose condition was caused by carbamazepine. The most common causative drug of SJS/TEN in five hospitals in Jakarta is carbamazepine, with five (72%) out seven subjects had HLA-B*15:02 allele.