Tysabri

Many decisions to stop taking the multiple sclerosis treatment Tysabri (natalizumab) appear to be based largely on subjective factors such as patients’ or physicians’ view of the risk, rather than objective assessments of the risk, a study indicates. Tysabri is an approved immunotherapy for active relapsing-remitting multiple sclerosis (RRMS). Despite its benefits, there…

The latest results on Tecfidera (dimethyl fumarate) and Tysabri (natalizumab) use in a clinical practice setting suggest that early treatment can improve outcomes in multiple sclerosis (MS) patients. This and other recent data on Tecfidera and Tysabri for the treatment of MS will be presented by Biogen at the…

Progressive multifocal leukoencephalopathy (PML) in multiple sclerosis (MS) patients treated with Tysabri (natalizumab) is linked to better outcomes if the condition does not give rise to actual symptoms and is diagnosed early. Limited brain lesions and more protective immune responses were also seen in patients who fared better, but researchers…

I don’t think this will surprise you. Multiple sclerosis drugs, some of the most expensive drugs there are, are getting even more expensive. Drug industry analyst Eric Schmidt, quoted in the Boston Business Journal, reported that Biogen began the new year by upping the price of Tecfidera,…

I’m filling in for Ian Franks this week on news item picks for Multiple Sclerosis News Today while Ian is in Moscow taking the first step in his HSCT (hematopoietic stem cell transplantation) quest. We wish him well. Virus Linked to Respiratory Infections May Also Trigger Brain Diseases…

An indirect comparison of results from randomized clinical trials in relapsing-remitting multiple sclerosis (RRMS) patients suggests that Tysabri (natalizumab) is more effective than Gilenya (fingolimod) at reducing disease activity. The study, “The Efficacy of Natalizumab versus Fingolimod for Patients with Relapsing-Remitting Multiple Sclerosis: A Systematic Review, Indirect…

A five-year study comparing the efficacy of different treatments for relapsing-remitting multiple sclerosis (RRMS) found that, in general, Lemtrada (alemtuzumab) and Tysabri (natalizumab) are more effective as therapies than Gilenya (fingolimod) and interferon β. Study results were presented in an oral presentation, “Comparison of 5-year treatment outcomes between alemtuzumab versus natalizumab, fingolimod and interferon β-1a,”…

Here’s my Pick of the Week’s News, as published by Multiple Sclerosis News Today. Best First-Line Treatment for Aggressive MS May Be Equally Aggressive Immunotherapies Sounds like “Fight fire with fire” to me; could be just what is needed. Patients with aggressive onset multiple sclerosis, characterized…

Although Tysabri (natalizumab) is a highly effective in treating patients with relapsing-remitting multiple sclerosis (RRMS), some may develop progressive multifocal leukoencephalopathy (PML). According to a new study, this occurs because Tysabri impairs immune surveillance in the central nervous system and reactivates the latent John Cunningham polyomavirus (JCV). The study, “Natalizumab Affects…

Disease-modifying therapies, a group of treatments for people with relapsing-remitting multiple sclerosis (RRMS), work to stabilize patients’ cognitive functions just as they do their physical symptoms. Research, conducted over the course of a year, also reported no differences between two types of DMTs, Gilenya (fingolimod) and Tysabri (natalizumab). The study, “…

Results from the STRIVE study support the safety of natalizumab (Tysabri) as a therapy for multiple sclerosis (MS) patients. The study, “Natalizumab in Anti-JC Virus Seronegative Patients with Early Relapsing-Remitting Multiple Sclerosis: Interim Results from the STRIVE Study,” was recently presented at the 2016 Annual Meeting of the Consortium of Multiple Sclerosis…

Biogen, announced that TYSABRI, a drug developed to treat people with multiple sclerosis (MS) has received a positive opinion from the European Medicine Agency (EMA) recommending its approval to be used in people with elapsing-remitting multiple sclerosis (RRMS).

Mice with experimental autoimmune encephalomyelitis (EAE), an animal model of multiple sclerosis (MS), were found to have milder symptoms if the target of natalizumab (Tysabri) — VLA4 — was absent on B-cells, preventing regulatory cells that might control immune processes from entering the brain. B-cells are increasingly thought to play…

Natalizumab (Tysabri) harnesses multiple sclerosis (MS) activity by targeting CD49, a molecule on the surface of immune cells. Now, researchers found that the drug reduces the factor on regulatory T-cells to a greater extent than on inflammatory T-cells — a mechanism that might explain disease exacerbation during treatment. The molecule under…

The European Medicines Agency Pharmacovigilance Risk Assessment Committee (PRAC), responsible for assessing and monitoring safety issues for human medicines, completed a review on the risk for progressive multifocal leukoencephalopathy (PML) in multiple sclerosis (MS) patients treated with the medicine Tysabri (natalizumab). The issued guidelines have the objective of minimizing patients’ risk.

In a recent study of more than 1,200 patients with multiple sclerosis (MS), a research team reported that treatment with the drug natalizumab (Tysabri) could lead to a tenfold increase in the levels of blood antibodies associated with a virus causing a rare but severe brain disease known as progressive multifocal…

Multiple sclerosis (MS) patients treated with natalizumab have an increased risk of developing high levels of antibodies associated with a virus causing a rare, but often fatal, brain infection known as progressive multifocal leukoencephalopathy (PML), researchers reported. Their study, “Therapy with natalizumab is associated with high JCV seroconversion and rising JCV index values,”…

A panel of neurologists from the U.K. and Ireland recently developed practical consensus guidelines for monitoring multiple sclerosis (MS) patients on natalizumab (Tysabri) therapy for the risk of developing progressive multifocal leukoencephalopathy (PML), a life-threatening viral infection caused by the John Cunningham (JC) virus. The panel was summoned by…

Biogen Inc. recently reported that the Phase 3 ASCEND clinical trial study testing TYSABRI efficacy in patients with secondary progressive multiple sclerosis (SPMS) did not achieve its primary and secondary goals. According to the company, the comprehensive results of the study will be revealed at a future medical conference.

A new study recently published in the journal BMC Neurology revealed that natalizumab (TYSABRI) is a safe and effective medication for pediatric cases of multiple sclerosis (MS). The study is entitled “Natalizumab in the pediatric MS population: results of the Italian registry” and was…

Two studies recently published in the journal Science Translational Medicine, revealed a possible new vaccine treatment for JC virus with important implications for multiple sclerosis (MS) treatment. The studies are entitled “JC polyomavirus mutants escape antibody-mediated neutralization” and “Broadly neutralizing human…

Researchers at Spedali Civili of Brescia in Italy recently published findings in the journal PLoS One that Biogen’s Tysabri (natalizumab) can improve cognitive impairment in patients with relapsing remitting multiple sclerosis (RRMS) over the course of at least three years. The study is entitled “Natalizumab Significantly…

The Pharmaceutical Management Agency (PHARMAC) is considering a funding proposal that includes five treatments for multiple sclerosis (MS), namely two key MS drugs,  Biogen‘s Tysabri and Novartis‘ Gilenya, that are not currently funded. PHARMAC is the New Zealand Crown agency that decides, on behalf of District…

Multiple sclerosis (MS) patients who are prescribed Tysabri have an increased risk to develop the rare, often fatal infection of the brain called progressive multifocal leukoencephalopathy (PML), according to a recent study. PML is caused by a common virus that infects blood cells and can be mobilized by popular RRMS drug Natalizumab,…

According to a study published in JAMA Neurology, multiple sclerosis patients are greatly benefited by Biogen Idec’s Tysabri (natalizumab) and tend to relapse if they discontinue treatment. Natalizumab had a protective effect on patients who were continuously treated with Tysabri beyond a 24-dose timepoint within the study,…

Biogen Idec is currently sponsoring a clinical trial evaluating its therapy Tysabri (natalizumab) in patients with secondary-progressive multiple sclerosis. Although relapse-remitting multiple sclerosis is more common and well-researched, the National Multiple Sclerosis Society estimates approximately half of relapse-remitting patients will transition to secondary-progressive within 19 years of diagnosis. The…