RxPG News Feed for RxPG News

Medical Research Health Special Topics World
  Home
 
   Health
 Aging
 Asian Health
 Events
 Fitness
 Food & Nutrition
 Happiness
 Men's Health
 Mental Health
 Occupational Health
 Parenting
 Public Health
 Sleep Hygiene
 Women's Health
 
   Healthcare
 Africa
 Australia
 Canada Healthcare
 China Healthcare
 India Healthcare
 New Zealand
 South Africa
 UK
 USA
 World Healthcare
 
   Latest Research
 Aging
 Alternative Medicine
 Anaethesia
 Biochemistry
 Biotechnology
 Cancer
 Cardiology
 Clinical Trials
 Cytology
 Dental
 Dermatology
 Embryology
 Endocrinology
 ENT
 Environment
 Epidemiology
 Gastroenterology
 Genetics
 Gynaecology
 Haematology
 Immunology
 Infectious Diseases
 Medicine
 Metabolism
 Microbiology
 Musculoskeletal
 Nephrology
 Neurosciences
  Brain Diseases
  Demyelinating Diseases
   Multiple Sclerosis
  Headache
  Memory
  Neurochemistry
  Neurodegenerative Diseases
  Regeneration
  Spinal Cord Diseases
  Stroke
  Taste
  Trigeminal Neuralgia
 Obstetrics
 Ophthalmology
 Orthopedics
 Paediatrics
 Pathology
 Pharmacology
 Physiology
 Physiotherapy
 Psychiatry
 Radiology
 Rheumatology
 Sports Medicine
 Surgery
 Toxicology
 Urology
 
   Medical News
 Awards & Prizes
 Epidemics
 Launch
 Opinion
 Professionals
 
   Special Topics
 Ethics
 Euthanasia
 Evolution
 Feature
 Odd Medical News
 Climate

Last Updated: Oct 11, 2012 - 10:22:56 PM
Multiple Sclerosis Channel

subscribe to Multiple Sclerosis newsletter
Latest Research : Neurosciences : Demyelinating Diseases : Multiple Sclerosis

   EMAIL   |   PRINT
Fampridine may hold promise for treating Multiple Sclerosis

Sep 26, 2006 - 6:50:00 PM , Reviewed by: Rashmi Yadav
"In this study, a significantly higher proportion of subjects experienced a consistent improvement in walking speed with Fampridine-SR than with placebo."

 
[RxPG] Acorda Therapeutics, Inc. (Nasdaq: ACOR) today announced positive results from its Phase 3 clinical trial of Fampridine-SR on walking in people with multiple sclerosis (MS). Statistical significance was achieved on all three efficacy criteria defined in the Special Protocol Assessment (SPA) by the Food and Drug Administration (FDA). A significantly greater proportion of people taking Fampridine-SR had a consistent improvement in walking speed, the study's primary outcome, compared to people taking placebo (34.8 percent vs. 8.3 percent) as measured by the Timed 25-Foot Walk (p less than 0.001). In addition, the effect was maintained in this study throughout the 14-week treatment period (p less than 0.001) and there was a statistically significant improvement in the 12-Item MS Walking Scale (MSWS-12) for walking responders vs. non-responders (p less than 0.001).

The average increase in walking speed over the treatment period compared to baseline was 25.2 percent for the drug group vs. 4.7 percent for the placebo group. Increased response rate on the Timed 25-Foot Walk was seen across all four major types of MS. In addition, statistically significant increases in leg strength were seen in both the Fampridine-SR Timed Walk responders (p less than 0.001) and the Fampridine-SR Timed Walk non-responders (p=0.046) compared to placebo. The Company intends to present comprehensive data at an upcoming medical meeting.

"We are delighted with the results from this trial, which are consistent with Acorda's prior Phase 2 study in people with MS. We will request a meeting with the FDA as soon as possible to discuss next steps for the Fampridine-SR program," said Ron Cohen, M.D., President and CEO. "Acorda is committed to the development of therapies that will improve the function and lives of people with MS, and we wish to thank the physicians and people with MS who participated in this trial."

"Many people with MS experience nerve damage that eventually impairs walking. Currently, no therapies are indicated to improve neurological function, such as loss of mobility, in MS," said Andrew Goodman, M.D., Director of the Multiple Sclerosis Center at the University of Rochester. "Based on the results of this trial, Fampridine-SR could represent a new way to treat people with MS. In this study, a significantly higher proportion of subjects experienced a consistent improvement in walking speed with Fampridine-SR than with placebo, and this was accompanied by a reduction in the degree of disability that the subjects reported in their daily activities related to mobility."


Special Protocol Assessment (SPA)

This clinical trial was conducted under an SPA from the FDA. The efficacy criteria set forth in the SPA included three elements:


To show that there were significantly more responders in the Fampridine-SR treated group than in the placebo group, as measured by the Timed 25-Foot Walk, a standard neurological test. A responder was defined as someone whose walking speed on the Timed 25-Foot Walk was consistently greater during at least three of four on-drug visits than the person's fastest speed on any of the five off-drug visits.
To demonstrate statistically significant improvement in walking speed on the last on-drug visit for the Fampridine-SR-treated responders compared to the placebo group.
To show that responders reported a significantly greater improvement than non-responders on the MSWS-12, a self-rated assessment of walking disability. This step was meant to validate the clinical meaningfulness of consistent improvement on the Timed 25-Foot Walk.

Study Design

The double-blind, placebo-controlled trial was designed to evaluate the safety and efficacy of Fampridine-SR in improving walking ability in people with MS. The trial, which enrolled 301 individuals at 33 MS centers in the United States and Canada, recruited patients between 18 and 70 years old with a definite diagnosis of MS and some degree of walking disability. The study was open to people with all types of MS, including primary-progressive, secondary-progressive, relapsing-remitting and progressive-relapsing. Participants were permitted to remain on a stable regimen of their current medications, including interferons. Secondary endpoints for the trial included measurements of leg strength. Subjects were randomized to 14 weeks of treatment with Fampridine-SR (n=229) or placebo (n=72), a 3:1 ratio of drug to placebo.

Safety Statement

In this study, adverse events were largely consistent with the safety profile observed in previous studies of Fampridine-SR in people with MS, including an increased risk of seizures that appears to be dose related. Following is a list of the most common adverse events reported in the study, with percentages representing the Fampridine-SR treatment group vs. the placebo group: falls (15.8 percent vs.15.3 percent), urinary tract infection (13.6 percent vs.13.9 percent), dizziness (8.3 percent vs. 5.6 percent), insomnia (8.3 percent vs. 4.2 percent), fatigue (6.1 percent vs. 2.8 percent), nausea (6.1 percent vs. 4.2 percent), upper respiratory tract infection (6.1 percent vs. 9.7 percent), asthenia (5.7 percent vs. 6.9 percent), back pain (5.7 percent vs. 0 percent), balance disorder (5.7 percent vs. 2.8 percent) and headache (5.7 percent vs. 5.6 percent).

Two serious adverse events that were judged potentially related to treatment and led to discontinuation were anxiety in one subject and a seizure in another subject that was observed during an occurrence of sepsis associated with a urinary tract infection. No deaths occurred during the study. One death was reported for a subject five weeks after the last on-drug study visit. This death occurred outside of the protocol time window for reporting adverse reactions and the cause of death is not known at this time.

About MS

Multiple sclerosis is a chronic, usually progressive disease of the central nervous system in which the immune system attacks and destroys the structure, and therefore degrades the function, of nerve cells. Approximately 400,000 Americans have MS, and every week about 200 people are newly diagnosed. Most are between the ages of 20 and 50, and women are affected two to three times as much as men. Worldwide, MS may affect 2.5 million individuals.

According to the National Multiple Sclerosis Society (NMSS), the direct costs of medical care for MS patients in the United States exceed $6 billion annually. Additionally, a recent NMSS analysis estimated the total cost of MS, including medical and non-medical care, production losses, and informal care, at more than $47,000 per U.S. patient per year. Complications from MS may make it harder for people to work and may interfere with their ability to perform common, daily activities.

For most people with MS, the disease slowly progresses with a series of unpredictable flare-ups, also called relapses or exacerbations. But for some, the progression of the disease is rapid. Each relapse tends to lead to increasing disabilities such as walking impairment, muscle weakness or speech or vision impairments. Approximately 80 percent of people with MS experience some form of walking disability. Within 15 years of an MS diagnosis, 50 percent of patients often require assistance walking and in later stages, about a third of patients are unable to walk.

About Fampridine-SR

Fampridine-SR is a sustained-release tablet formulation of the investigational drug fampridine (4-aminopyridine, or 4-AP). Data collected in laboratory studies found that fampridine can improve the communication between damaged nerves, which may result in increased neurological function.

Fampridine-SR Mechanism of Action

A nerve cell has one extension, called an axon, which it uses to communicate via electrical signals to other nerve cells. All but the smallest axons have a special covering of a fatty substance called myelin that acts as insulation to preserve and speed these nerve signals, much like the insulating cover of an electrical cord helps preserve the transmission of electricity.

In MS, the myelin becomes damaged and the axon cannot effectively transmit electrical impulses. Specifically, the damaged myelin exposes channels in the membrane of the axon, which allow potassium ions to leak from the axon, dissipating the electrical current. Fampridine-SR blocks these exposed channels, and helps the electrical signals to pass through areas of damage.




On the web: http://www.porternovelli.com/ 

Advertise in this space for $10 per month. Contact us today.


Related Multiple Sclerosis News
Smoking associated with rapid progression of multiple sclerosis
Testosterone may help men with multiple sclerosis
Age of onset but not severity of Multiple Sclerosis inherited from parents
Cause of nerve fiber damage in multiple sclerosis identified
Fampridine may hold promise for treating Multiple Sclerosis
CNS can send out signals to invite autoimmune attacks
Natalizumab Re-approved for Relapsing Multiple Sclerosis
Efficacy in relapse rate reduction beyond five years shown for interferon beta 1b in Multiple Sclerosis
Systematic Review Questions Accuracy of MRI in Multiple Sclerosis
Statins could prove useful in treating MS

Subscribe to Multiple Sclerosis Newsletter

Enter your email address:


 Additional information about the news article
Conference Call and Webcast

An audio webcast of the call can also be accessed from the Company's website, at http://www.acorda.com, for the next 30 days.
 Feedback
For any corrections of factual information, to contact the editors or to send any medical news or health news press releases, use feedback form

Top of Page

 
Contact us

RxPG Online

Nerve

 

    Full Text RSS

© All rights reserved by RxPG Medical Solutions Private Limited (India)