First author: Hadjadj et al.
Link to article: DOI: 10.1136/ard-2024-225640
Summary:
Study Objective:
To assess the efficacy and safety of targeted therapies in VEXAS syndrome, an adult-onset autoinflammatory disease associated with somatic mutations in the UBA1 gene.
Methodology:
A multicenter retrospective study including 110 patients who received at least one targeted therapy. Complete response (CR) and partial response (PR) were defined based on specific clinical and biological criteria.
Results:
A total of 110 patients received 194 targeted therapies: 78 (40%) JAK inhibitors (JAKi), 51 (26%) IL-6 inhibitors, 33 (17%) IL-1 inhibitors, 20 (10%) TNFα blockers, and 12 (6%) other targeted therapies.
At 3 months, the overall response rate (CR and PR) was 24% with JAKi, 32% with IL-6 inhibitors, 9% with IL-1 inhibitors, and 0% with TNFα blockers or other targeted therapies.
At 6 months, the overall response rate was 30% with JAKi and 26% with IL-6 inhibitors.
Treatment-free survival was significantly longer with JAKi compared to other targeted therapies.
Among patients who discontinued treatment, reasons included primary failure, secondary failure, serious adverse events, or death, with varying rates depending on the therapy.
Conclusions:
JAK and IL-6 inhibitors show clinical benefits, while other therapies demonstrate lower efficacy. These findings require confirmation in prospective trials.
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