- Marketing Applications Supported by Risk Stratification Data -
These submissions are supported by risk stratification data and a risk algorithm that enables physicians and individuals living with MS to make informed decisions when considering treatment with TYSABRI. If approved, a first-line label will allow all appropriate anti-JCV antibody negative patients to consider TYSABRI early in the course of treatment, regardless of the level of disease activity or prior treatment history. TYSABRI is a highly efficacious treatment that has been shown to slow disability progression by 42 – 54 percent and reduce annualized relapse rates by 68 percent.
“Our anti-JCV antibody test, STRATIFY JCV®, helps to
determine the most appropriate patients for TYSABRI and the data
collected to date supports our recent filing for first-line use,” said
Currently in the U.S., due to an increased risk of an opportunistic viral infection, progressive multifocal leukoencephalopathy (PML), TYSABRI is generally recommended for people living with relapsing forms of MS whose disease is not responding to, or who are unable to tolerate, an alternative therapy regardless of JCV status. In the EU, TYSABRI is approved for highly active relapsing-remitting MS (RRMS) in adult patients who have failed to respond to beta interferons or have rapidly evolving, severe RRMS.
“TYSABRI is an important treatment option for thousands of people living
with MS,” said
TYSABRI is approved in more than 65 countries. TYSABRI is approved in
TYSABRI has advanced the treatment of MS with its established efficacy.
Data from the Phase 3 AFFIRM trial, which was published in the
TYSABRI increases the risk of progressive multifocal leukoencephalopathy (PML), an opportunistic viral infection of the brain which usually leads to death or severe disability. Infection by the JC virus (JCV) is required for the development of PML and patients who are anti-JCV antibody positive have a higher risk of developing PML. Factors that increase the risk of PML are the presence of anti-JCV antibodies, prior immunosuppressant use, and longer TYSABRI treatment duration. Patients who have all three risk factors have the highest risk of developing PML. Other serious adverse events that have occurred in TYSABRI-treated patients include hypersensitivity reactions (e.g., anaphylaxis) and infections, including opportunistic and other atypical infections. Clinically significant liver injury has also been reported in the post-marketing setting. A list of adverse events can be found in the full TYSABRI product labeling for each country where it is approved.
TYSABRI is marketed and distributed by
This press release includes forward-looking statements, including statements about regulatory actions and the development and commercialization of TYSABRI in MS. These forward-looking statements may be accompanied by such words as "anticipate," "believe," "estimate," "expect," "forecast," "intend," "may," "plan," "will," and other words and terms of similar meaning. You should not place undue reliance on these statements. These statements involve risks and uncertainties that could cause actual results to differ materially from those reflected in such statements, including obtaining regulatory approval, the occurrence of adverse safety events, product competition, the availability of reimbursement for our products, adverse market and economic conditions, problems with our manufacturing processes and our reliance on third parties, failure to comply with government regulation and possible adverse impact of changes in such regulation, our ability to protect our intellectual property rights and the cost of doing so, and the other risks and uncertainties that are described in the Risk Factors section of our most recent annual or quarterly report and in other reports we have filed with the
Lindsey Smith, 781-464-3260
Emer Reynolds, +353-1-709-4022
Jonathan Birt, +44-751-559-7858
Kia Khaleghpour, 781-464-2067
Chris Burns, 1-800-252-3526
David Marshall, +353-1-709-4444