Featured Research

from universities, journals, and other organizations

Test can help make diagnosis of Creutzfeldt-Jakob disease

Date:
September 19, 2012
Source:
American Academy of Neurology (AAN)
Summary:
A new guideline may help doctors in making the diagnosis of Creutzfeldt-Jakob disease.

A new guideline released by the American Academy of Neurology may help doctors in making the diagnosis of Creutzfeldt-Jakob disease. The guideline is published in the September 19, 2012, online issue of Neurology, the medical journal of the American Academy of Neurology.

Creutzfeldt-Jakob disease is a rare, always fatal brain disorder that involves quickly progressing dementia. New cases appear in about one person per million each year worldwide and confirming the diagnosis is challenging. People with the disease can have a wide range of symptoms. Many other conditions can cause similar symptoms, and with some of these conditions the dementia can be treated.

The guideline focused only on the diagnosis of sporadic Creutzfeldt-Jakob disease.

While several tests are available to help diagnose sporadic Creutzfeldt-Jakob disease, a brain biopsy is the most accurate test that can be performed on a person living with the disease. Brain biopsy is potentially dangerous.

The guideline examined the diagnostic accuracy of testing for a protein called 14-3-3 in the spinal fluid. The guideline authors reviewed all of the available evidence on the test, which included samples of 1,849 people with suspected sporadic Creutzfeldt-Jakob disease from nine studies.

They found that in cases where doctors strongly suspect Creutzfeldt-Jakob to be the cause of the dementia, the test can be helpful in reducing the uncertainty of the diagnosis. However, the test is not accurate enough to diagnose the disease with certainty or to rule it out completely. The test has a sensitivity of about 92 percent and a specificity of about 80 percent. Sensitivity is the percentage of patients with the disease who have a positive test result, and specificity is the percentage of patients who do not have the disease and who are correctly identified as having a negative test result.

The guideline determined that the 14-3-3 protein test can be useful when the probability of the person having Creutzfeldt-Jakob disease is between 20 percent and 90 percent.

"This means that if the physician considers the likelihood of Creutzfeldt-Jakob disease to be extremely low or extremely high, then testing for 14-3-3 protein would not be useful regardless of the result," said guideline author Taim Muayqil, MBBS, FRCPC, of King Saud University in Riyadh, Saudi Arabia, and a member of the American Academy of Neurology.

Muayqil noted that only doctors experienced in diagnosing dementia should determine whether the 14-3-3 protein test is needed and how results should be interpreted.


Story Source:

The above story is based on materials provided by American Academy of Neurology (AAN). Note: Materials may be edited for content and length.


Journal Reference:

  1. Taim Muayqil, Gary Gronseth, and Richard Camicioli. Evidence-based guideline: Diagnostic accuracy of CSF 14-3-3 protein in sporadic Creutzfeldt-Jakob disease: Report of the Guideline Development Subcommittee of the American Academy of Neurology. Neurology, 2012 DOI: 10.1212/WNL.0b013e31826d5fc3

Cite This Page:

American Academy of Neurology (AAN). "Test can help make diagnosis of Creutzfeldt-Jakob disease." ScienceDaily. ScienceDaily, 19 September 2012. <www.sciencedaily.com/releases/2012/09/120919190104.htm>.
American Academy of Neurology (AAN). (2012, September 19). Test can help make diagnosis of Creutzfeldt-Jakob disease. ScienceDaily. Retrieved September 1, 2014 from www.sciencedaily.com/releases/2012/09/120919190104.htm
American Academy of Neurology (AAN). "Test can help make diagnosis of Creutzfeldt-Jakob disease." ScienceDaily. www.sciencedaily.com/releases/2012/09/120919190104.htm (accessed September 1, 2014).

Share This




More Mind & Brain News

Monday, September 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Coffee Then Napping: The (New) Key To Alertness

Coffee Then Napping: The (New) Key To Alertness

Newsy (Aug. 30, 2014) Researchers say having a cup of coffee then taking a nap is more effective than a nap or coffee alone. Video provided by Newsy
Powered by NewsLook.com
Young Entrepreneurs Get $100,000, If They Quit School

Young Entrepreneurs Get $100,000, If They Quit School

AFP (Aug. 29, 2014) Twenty college-age students are getting 100,000 dollars from a Silicon Valley leader and a chance to live in San Francisco in order to work on the start-up project of their dreams, but they have to quit school first. Duration: 02:20 Video provided by AFP
Powered by NewsLook.com
Baby Babbling Might Lead To Faster Language Development

Baby Babbling Might Lead To Faster Language Development

Newsy (Aug. 29, 2014) A new study suggests babies develop language skills more quickly if their parents imitate the babies' sounds and expressions and talk to them often. Video provided by Newsy
Powered by NewsLook.com
Electrical Stimulation Boosts Brain Function, Study Says

Electrical Stimulation Boosts Brain Function, Study Says

Newsy (Aug. 29, 2014) Researchers found an improvement in memory and learning function in subjects who received electric pulses to their brains. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins