An Open-Label, Survey-Based, Multicenter Study to Determine Patient Satisfaction With Single-Use Prefilled Avonex® PEN Autoinjector in Multiple Sclerosis Patients

This is an open-label, multicenter, survey-based study to determine subject satisfaction with using the single-use autoinjector for the delivery of AVONEX PS. Enrollment will consist of 200 subjects in a single cohort who have been prescribed AVONEX PEN in accord with its Product Monograph. All subjects must be experienced AVONEX PS users (i.e., using it for at least 12 weeks without any support person to help with the injections administered in the vastus lateralis) and enrolled in MS AllianceTM program (hereinafter, MS Alliance). The clinic nurse investigator will instruct the patient on the correct method of using AVONEX PEN and the first injection with Autoinjector, using the subject's own supply, will be completed in the clinic, with the clinic nurse investigator present. All further injections of AVONEX PEN will be self-administered at home. The subjects will complete the first set of questionnaires, including Subject Satisfaction Questionnaire, Ease of Use Grading Scale and the Autoinjector Instructions Grading Scale, within 10 minutes after the first injection at the clinic, and will be given another set of questionnaires to be completed at home within 10 minutes following the last study injection 2 months later, provided the subjects still continue to self-administer their AVONEX PEN. The first set of questionnaires will be left with the clinic nurse investigator to be sent to the CRO by fax or e-mail, while the second set will need to be mailed to the CRO by study subjects using the provided self-addressed, postage-paid envelope.