• Patient Prefer Adher · Jan 2021

    Subcutaneous Interferon Beta Therapy in Multiple Sclerosis Patients - Characterization of Injection Site Reactions and Flu-Like Symptoms in a Daily Practice Setting - Results from the Non-Interventional Study PERFECT.

    • Borries Kukowski, Karin Rehberg-Weber, Kirsi Taipale, Andreas Kowalik, and Patrick Oschmann.
    • Neurologische Gemeinschaftspraxis, Göttingen, Germany.
    • Patient Prefer Adher. 2021 Jan 1; 15: 1091-1100.

    PurposeThe purpose of this study was to assess the prevalence of injection site reactions (ISR) and flu-like symptoms (FLS) during treatment with subcutaneous (SC) interferon (IFN) beta therapies and to document measures to mitigate and prevent ISR and FLS.Patients And MethodsThe cross-sectional post-authorization safety study PERFECT was conducted from 11/2017 to 7/2019 in neurology practices in Germany. Adult patients with relapsing-remitting multiple sclerosis (MS) receiving SC IFN beta for ≥3 months were eligible. The primary endpoints were patient-reported prevalence of ISR and FLS. Additional endpoints reported by patients, MS nurses, and neurologists included type, frequency, duration, time of occurrence, and management of ISR and FLS.ResultsIn total, 603 patients (median age 45 years [range 36-53], 74% female) were included in the analysis. Time since MS diagnosis was >5 years in most patients. The majority had received none (64%) or 1 (22%) prior therapy. Current MS therapy in 36%, 32%, and 30% of patients was IFN beta-1b, IFN beta-1a, and peginterferon beta-1a, respectively. ISR and FLS under current therapy were reported by 84% and 68% of patients, respectively. ISR developed within 5 days after injection (84%) and lasted for 2-14 days (53%) in most patients. The most frequent patient-reported symptom was erythema (39%). ISR resolved or abated with systemic treatments or topical ointments. Most frequent preventive measures included alternating injection sites (58%). Occurrence of ISR rarely resulted in treatment interruption (5%). FLS occurred predominantly up to 6 h after injection (40%) and lasted <12 h (26%). The most frequent patient-reported symptoms were fatigue (15%) and aching limbs (15%). Assessments by physicians and MS nurses differed from patient-reported results.ConclusionAlthough ISR were experienced by the majority of patients, they rarely resulted in treatment interruption. In this real-world setting, ISR and FLS management was in line with published expert recommendations.© 2021 Kukowski et al.

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