Serum Concentrations of IL-18, IL-21, IL-22, IL-23, IL-27, and IL-31 in Patients With Stevens-Johnson Syndrome/Toxic Epidermal Necrolysis and Their Correlation With Disease Severity.

Background: Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are life-threatening conditions marked by extensive epidermal necrolysis and skin sloughing.

Objective: The study aimed to assess the serum levels of specific proinflammatory interleukins (IL-18, -21, 22, -23, -27, and -31) and their relationship with the severity of SJS/TEN within the Vietnamese population.

Methods: This descriptive cross-sectional study was conducted from 2018 to 2020. Serum levels of IL-18, -21, -22, -23, -27, and -31 were measured using the fluorescence covalent microbead immunosorbent assay.

Results: The study included 61 patients (29 males and 32 females; 21 with SJS and 40 with TEN), with a median age of 51 years (interquartile range: 37-58), and 20 healthy controls. The median lesional area covered 45% of the body surface area (interquartile range: 8-70%). The most frequently identified medications were traditional medicine (19 patients; 31.15%), allopurinol (9 patients; 14.75%), and carbamazepine (8 patients; 13.11%). In the TEN group, the serum level of IL-18 was significantly elevated compared to the healthy control group. A correlation was found between serum levels of IL-18 and IL-27 and the lesional area in SJS/TEN patients, as well as between serum levels of IL-18 and IL-31 and the lesional area in TEN patients.

Conclusion: Serum levels of IL-18 were increased in TEN group. Additionally, serum concentrations of IL-18, IL-27, and IL-31 were associated with disease severity as indicated by the lesional area. These interleukins may play an important role in the pathogenesis of SJS/TEN.