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  • Title: Treatment patterns in paediatric and adult patients with SLE: a retrospective claims database study in the USA.
    Author: Brunner HI, Vadhariya A, Dickson C, Crandall W, Kar-Chan Choong C, Birt JA, Ruperto N, Ramanan AV.
    Journal: Lupus Sci Med; 2023 Jul; 10(2):. PubMed ID: 37429670.
    Abstract:
    OBJECTIVE: To assess real-world treatment regimens and patterns in childhood-onset SLE (cSLE) and adult-onset SLE (aSLE) cohorts, including similarities in treatments, duration of use and adherence. METHODS: This retrospective study utilised data from Merative L.P. MarketScan Research Databases (USA). Index date was the date of first SLE diagnosis (2010-2019). Patients aged <18 years (cSLE) and ≥18 years (aSLE) at index date with confirmed SLE diagnosis and ≥12 months continuous enrolment during pre-index and post-index periods were included. The cohorts were stratified based on the presence (existing) or absence (new) of pre-index SLE. Primary outcomes (post-index period) included treatment regimens (all patients), and adherence (proportion of days covered (PDC)) and discontinuation of therapies initiated within 90 days of diagnosis (new patients). Univariate comparisons between cSLE and aSLE cohorts were performed using Wilcoxon rank-sum and χ2 (or Fisher's exact) tests. RESULTS: cSLE cohort included 1275 patients (mean age=14.1 years) and aSLE cohort included 66 326 patients (mean age=49.7 years). Antimalarials and glucocorticoids were commonly used among new (cSLE=64.4%/62.0%; aSLE=51.8%/49.7%) and existing (cSLE=68.6%/58.9%; aSLE=63.8%/51.3%) patients in both cohorts. Median oral glucocorticoid dose (prednisone equivalent) was higher in cSLE vs aSLE (new=22.1 vs 14.0 mg/day; existing=14.4 vs 12.3 mg/day; p<0.05). Mycophenolate mofetil use was higher in patients with cSLE vs aSLE (new=26.2% vs 5.8%; existing=37.6% vs 11.0%; p<0.0001). Compared with aSLE, more patients used combination therapies in cSLE (p<0.0001). Median PDC was higher in cSLE vs aSLE for antimalarials (0.9 vs 0.8; p<0.0001) and oral glucocorticoids (0.6 vs 0.3; p<0.0001). Treatment discontinuation was lower in cSLE vs aSLE for antimalarials (25.0% vs 33.1%; p<0.0001) and oral glucocorticoids (56.6% vs 71.2%; p<0.0001). CONCLUSIONS: Management of cSLE and aSLE includes the same medication classes; differences include more intensive use of therapy in cSLE, warranting the need for approved safe medications for cSLE.
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