Welcome! We regret to inform you that the Injury Board National News Desk has been discontinued. Feel free to browse around and enjoy our previously published articles, or visit The Injury Blog Network for the latest in personal injury news.

Genetic Cause Discovered For Statin-Related Muscle Pain

Posted by Jane Akre
Wednesday, July 23, 2008 9:02 PM EST
Category: On The Road, Major Medical, Protecting Your Family, In The Workplace
Tags: Statins, Lipitor, Heart Disease, Cholesterol, Zocor, Drug Products

Statin drugs underlie some muscle pain in users, if they have two genetic variants.

LEARN MORE

 

IMAGE SOURCE:© iStockphoto/ streaming blood/ author: Eraxion 

 

Some people who take cholesterol lowering drugs, known as statins, have complained of muscle pain.

Now British researchers believe they’ve discovered the genetic cause that underlies the pain and muscle weakness, known as myopathy.

In the July 24 issue online of the New England Journal of Medicine (NEJM), University of Oxford researchers say they’ve found a gene variant that affects the transportation of statins into the liver. 

Dr. Rory Collins, a professor of medicine and epidemiology there says, “That variant produces a high level of blood statins and accounts for the greatest proportion of myopathy in people who use statins.”

Muscle pain, though not uncommon, occurs in roughly one out of every 1,000 person on statins.  While about a quarter of the population carries one of the genes, a smaller percentage carries two copies.

Two copies of the variant gene carry a 15-fold increased risk for muscle pain. It’s estimated about two percent of the population carry two variant genes.

It is the genetic variant that accounts for about 60 percent of the statin-related myopathy.   Muscle pain may also depend on how much of the statin is given to the patient.

"For the statin doses most usually used, 20 to 40 milligrams of simvastatin, for example, the risk of myopathy is very low," Dr. Collins tells the Washington Post.  "Using a high dose for someone at high risk, the absolute risk of myopathy is maybe one in 1,000. With a standard dose, the risk would be about one in 10,000."

Patients are given statins to lower cholesterol levels to avoid a buildup of the fat-like substance along arteries that contribute to heart disease.

Popular statins are Mevacor (lovastatin), Pravachol (pravastatin), Zocor (simvastatin), Lescol (fluvastatin),  Lipitor (atorvastatin), and Baycol (cerivastatin).   

A genetic test is recommended to determine if a person has two of the genetic variant genes before large doses of statins are recommended.  #


No Comments

Comments for this article are closed.

About the National News Desk

Our mission is to seek the complete truth and provide a full and fair account of the events and issues that surround personal safety, accident prevention, and injury recovery.  We are committed to serving the public with honesty and integrity in these efforts.

Hurt in an accident? Contact an Injury Board member

Subscribe to Blog Updates

Enter your email address if you would like to receive email notifications when comments are made on this post.

Email address

Subscribe

RSS Feed

Add the National News Desk to your favorite RSS reader

Add to Google Reader Add to myYahoo Add to myMSN Add to Bloglines Add to Newsgator Add to Netvibes Add to Pageflakes