Supplemental Table 2.Baseline Case Report Form (CRF)

Date of enrolment ___ . ___ . ______(dd.mm.yyyy)

Written consentYes / No

Are the Principles of enrolment into TOP met and the patient characteristics in accordance with the TYSABRI® prescribing information/Product Monograph? Yes / No

Is the patient enrolled in TYGRIS ?Yes / NoIf yes, patient ID in TYGRIS ______

Is the patient enrolled in other Biogen Idec studies ?Yes / No

Protocolname ______

Protocolnumber ______

Demographics

Gender M / F

Birth Date ___ . ___ . ______(dd.mm.yyyy)

Patient initials ______

Medical History

Does the patient have a history of Serious Opportunistic Infection? Yes / No

If yes, please specify ______

Does the patient have a malignancy or a history of malignancy? Yes / No

If yes, please specify:

Breast Cervical

Colorectal Leukemia

Lung Lymphoma

Melanoma Non-melanoma skin cancer

Prostate Uterine

Other please specify, ______

Primary site of malignancy unknown

Does the patient have a history of organ transplant (excluding corneal

transplant)? Yes / NoIf yes, please specify ______

Date of first MS symptoms ___. ___ . ______(dd.mm.yyyy)

Date of first dose of TYSABRI__ . ___ . ______(dd.mm.yyyy)

Number of doses administered before enrolment in TOP ______

MRI

Was the recommended Baseline MRI performed (within 180 days prior to the initiation of Tysabri)? Yes / No

If yes, Date of most recent MRI before enrolment in TOP? ___ . ___ . ______(dd.mm.yyyy)

Gadolinuim Administration Yes / No If yes T1 + Gd enhancing lesions 0 / 1+

T2 hyperintensive lesions 0 / 1-2 / 3-8 / 9+

If available: Infratentorial lesions 0 / 1+

Juxtacortical lesions 0 / 1+

Periventricular lesions 0 / 1-2 / 3+

History of Disease Modifying Therapies

Does the patient have a history of disease-modifying, anti-neoplastic,or immunosuppressive medications, or steroids? Yes / No

Please enter all the treatments that were initiated before enrolment inTOP:

Treatment Start date End date

______

______

______

History of EDSS

Date of last EDSS before enrolment in TOP: ___ . ___ . ______(dd.mm.yyyy)

Score of last EDSS before enrolment in TOP: ______

EDSS at enrolment visit

Was an EDSS performed at this visit? Yes / No

Pyramidal ______

Cerebellar ______

Brainstem ______

Sensory ______

Bowel/Bladder ______

Visual ______

Mental ______

Ambulation score ______

EDSS score ______

History of relapses

Has the patient experienced relapses between Start date of TYSABRI and Date of enrolment in TOP? Yes / No

Number of relapses in the last year before start of TYSABRI ______

Number of relapses resulting in steroid treatment ______

Number of relapses resulting in hospitalization ______

Number of relapses in the last 2 years before start of TYSABRI ______

Number of relapses resulting in steroid treatment ______

Number of relapses resulting in hospitalization ______

JCV Test*

Has the patient ever been tested for the presence of anti-JCV

antibodies? Yes/NoIf YesDate of most recent JCV test ___ . ______

Has the patient ever been tested positive for the presence of anti-JCVantibodies? Yes/No

If YesDate tested positive ___ . ______

Pregnancy

Is the patient currently pregnant? Yes / No. If Yes,the patient should be reported to Biogen Idec's Drug Safety and Risk Management for registration and follow-up in the TYSABRI® Pregnancy Registry.

* Data concerning the patient’s anti-JCV antibody status was included the version 3.0 of the CRF,following a protocol amendment end of 2012. This data is therefore unavailable for the current analysis.