Biogen Idec (NASDAQ: BIIB) and Elan Corporation, plc (NYSE: ELN) today announced results from a one-year, longitudinal health outcomes study (n=324) in which patients with multiple sclerosis (MS) who received 12 infusions of TYSABRI (natalizumab) reported improvements in quality of life (QoL) measures, as well as reduced fatigue and overall improved cognitive function, as measured by validated tools.
The goal of the study, which was performed in conjunction with HealthCore Inc., a health-outcomes research company, was to assess patient experiences with TYSABRI in a real-world setting. This research was presented in three posters at the American Academy of Neurology's (AAN) 62nd Annual Meeting in Toronto, April 10 - 17, 2010. The AAN Annual Meeting is the world's largest gathering of neurologists.
"Because MS is such a debilitating disease that affects patients physically, cognitively, psychologically and socially, it can have a significant impact on their quality of life," said William Stuart, M.D., Medical Director of the Multiple Sclerosis Center of Atlanta. "These analyses, based on patient-reported outcomes, are critical to understanding the benefits of treatment with TYSABRI over the long term and in a real-world setting."
The one-year longitudinal study assessed health outcomes from the perspective of the patient using validated patient-reported outcome (PRO) measures prior to treatment initiation and after the third, sixth and 12th infusion with TYSABRI in a real-world setting. A majority of the patients in the study were female (77.8%) with mean age of 46.7 years and mean years since diagnosis of nine years.
Quality of Life Study Results
After one year of treatment, patients reported statistically significant improvement in:
MS-specific QoL, as measured by the 29-item Multiple Sclerosis Impact Scale (MSIS-29), with lower scores indicating better QoL
Both scales report the physical and psychological aspects of QoL in two summary scores. For both scales changes in mean scores from baseline through the 12th infusion were evaluated after adjusting for baseline patient-level and treatment characteristics.SF-12v2 Physical Component Summary (PCS) scores improved significantly from baseline (BL 34.25, 12th 36.66; p
The results of these findings are consistent with results from pivotal clinical trials and show the beneficial impact of TYSABRI on QoL in MS patients. Results show that improvements were seen as early as three months and were sustained for 12 months.
The poster titled Improvement in Health-Related Quality of Life in Multiple Sclerosis Patients Receiving Natalizumab in the United States (P02.166) was made available for viewing on April 13 from 3-7:30 p.m. EDT. The poster titled Effect of Natalizumab on Disease-Specific Quality of Life after One Year of Natalizumab Treatment (P02.164) was made available for viewing on April 13 from 3-7:30 p.m. EDT.
Fatigue and Cognition Study Results
After one year of treatment, patients reported:improvement in cognitive function
The poster titled Improvement in Patient-Reported Fatigue and Cognitive Function over Time with Natalizumab Treatment (P06.167) was made available for viewing on April 15 from 3-7:30 p.m. EDT.
Dr. Stuart serves as a paid consultant for Biogen Idec.
TYSABRI is approved in more than 45 countries. In the U.S., it is approved for relapsing forms of MS and in the European Union for relapsing-remitting MS.Data from the Phase III AFFIRM trial highlights TYSABRI's powerful efficacy. According to that data, which was published in the New England Journal of Medicine, after two years, TYSABRI treatment led to a 68 percent relative reduction (p
TYSABRI increases the risk of progressive multifocal leukoencephalopathy (PML), an opportunistic viral infection of the brain. The risk of PML increases with increasing duration of use. 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 been reported in patients treated with TYSABRI in the post-marketing setting. Common adverse events reported in TYSABRI-treated MS patients include headache, fatigue, infusion reactions, urinary tract infections, joint and limb pain and rash.
TYSABRI is co-marketed by Biogen Idec Inc. and Elan Corporation, plc. For more information about TYSABRI, please visit www.tysabri.com, www.biogenidec.com or www.elan.com, or call 1-800-456-2255.
About Biogen Idec
Biogen Idec creates new standards of care in therapeutic areas with high unmet medical needs. Founded in 1978, Biogen Idec is a global leader in the discovery, development, manufacturing, and commercialization of innovative therapies. Patients worldwide benefit from Biogen Idec's significant products that address diseases such as lymphoma, multiple sclerosis, and rheumatoid arthritis. For product labeling, press releases and additional information about the company, please visit www.biogenidec.com.
Elan Corporation, plc is a neuroscience-based biotechnology company committed to making a difference in the lives of patients and their families by dedicating itself to bringing innovations in science to fill significant unmet medical needs that continue to exist around the world. Elan shares trade on the New York, London and Dublin Stock Exchanges. For additional information about the company, please visit http://www.elan.com.
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