Задержка с доступом и присоединением являются реальными проблемами, которые ставят под угрозу эффективность родовспоможения при множественном склерозе.
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Rosalem Rafael Augusto, Spricigo Mariana Gondim Peixoto, de Oliveira Mateus Boaventura, Adoni Tarso, Apóstolos-Pereira Samira Luísa, Callegaro Dagoberto, Silva Guilherme Diogo
Аннотация
Оригинал публикации
Delayed access and adherence are real-world challenges that compromises effectiveness of natalizumab in multiple sclerosis.
BACKGROUND: High efficacy therapy can prevent disability in multiple sclerosis patients, but timing and adherence are imperative. This study assessed the impact of delayed access and non-adherence in the treatment of multiple sclerosis using natalizumab in a tertiary Brazilian center.
METHODS: We conducted a retrospective, single-center observational study using medical records of multiple sclerosis patients treated at a public tertiary center in São Paulo, Brazil. Data collected included demographics, disease course, treatment history, relapses, clinical and radiological activity, adherence, adverse events, and disability progression. A sample size of 88 was estimated to detect differences in the frequency of Expanded Disability Status Scale (EDSS) ≥ 6 between early and late natalizumab treatment groups, defined by a 48-month cutoff from symptom onset to natalizumab initiation. Statistical analyses included Mann-Whitney, Fisher's, and Chi-squared tests.
RESULTS: A total of 88 patients were included in this study. The majority of patients (n = 69, 78 %) initiated natalizumab late in the disease course. The late-treatment group had a higher frequency of EDSS ≥ 6 at the last follow-up compared to the early-treatment group (32 % vs. 11 %, p = 0.024). One-fourth of patients were non-adherent, with a threefold higher risk of experiencing a relapse during treatment (55 % vs. 17 %, p < 0.001). The primary reason for natalizumab discontinuation was the perceived risk of progressive multifocal leukoencephalopathy (72 %), though no cases were reported.
CONCLUSION: Enhancing early access and adherence to natalizumab is essential to maximize its real-world benefits for multiple sclerosis patients.