A Multicenter, Observational, Open-Label, Single-Arm Study of Tysabri in Early Relapsing-Remitting Multiple Sclerosis in Anti-JCV Antibody Negative Patients [Protocol:101MS407]

Trial ID:
IRB-12-5904
Charles Smith
The primary objective of the study is to determine which baseline and yearly response factors (clinical and para clinical) predict overall...

Key Inclusion Criteria:

  • Documented diagnosis of Relapsing Multiple Sclerosis (McDonald 2010 Criteria ).
  • <3 year disease duration.
  • Must have an Expanded Disability Status Scale (EDSS) score from 0 to 4.0, inclusive.
  • Anti-JCV antibody negative test within 6 months of Screening Visit.
  • Must satisfy the approved therapeutic indications for Tysabri.
  • Must be treatment-naïve to disease-modifying therapy (DMT) or have been treated with DMT (including but not limited to Avonex, Betaseron, Rebif, Copaxone, Extavia, or Gilenya) for ≤36 months total prior to date of informed consent.
  • Decision to treat with Tysabri must precede enrollment.

Key Exclusion Criteria:

  • Any prior treatment with Tysabri.
  • Anti-JCV antibody positive at any timepoint prior to the Screening Visit.
  • Contraindications to treatment with Tysabri as described in the US Prescribing Information.
  • History of progressive multifocal leukoencephalopathy (PML) or other opportunistic infections, or an increased risk for such infections.
  • History of diagnosis of Primary Progressive Multiple Sclerosis (PPM) and/or Secondary Progressive Multiple Sclerosis (SPMS).
  • Receiving immunomodulatory or immunosuppressive therapy.
  • Prior history of immunosuppressive use (mitoxantrone, azathioprine, methotrexate, cyclophosphamide, mycophenolate, cladribine, rituximab).
  • Immunocompromised at the time of enrollment.
  • Known active malignancies (subjects with cutaneous basal cell carcinoma that has been completely excised prior to study entry remain eligible).
  • Women breastfeeding, pregnant, or planning to become pregnant; women who are not post-menopausal or surgically sterile who are unwilling to practice contraception.
  • Inability to comply with study requirements.

NOTE: Other protocol defined Inclusion/Exclusion criteria may apply.

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