Featured Research

from universities, journals, and other organizations

Adult antiviral drug effective in suppressing hepatitis B in teens

Date:
December 5, 2012
Source:
Wiley
Summary:
A recent clinical trial found that the adult antiviral drug, tenofovir disoproxil fumarate, is safe and effective in treating adolescents with hepatitis B virus. Trial results show that tenofovir DF suppressed HBV in 89 percent of pediatric participants.

A recent clinical trial found that the adult antiviral drug, tenofovir disoproxil fumarate (tenofovir DF), is safe and effective in treating adolescents with hepatitis B virus (HBV). Trial results published in the December issue of Hepatology, a journal of the American Association for the Study of Liver Diseases (AASLD), show that tenofovir DF suppressed HBV in 89% of pediatric participants.

Chronic HBV is a major health burden that studies estimate affects 350 million people worldwide, with 600,000 deaths attributed to this chronic disease. The Centers for Disease Control and Prevention (CDC) estimate that more than one million Americans have chronic HBV, with most patients infected during childhood. Medical evidence suggests that 90% of patients infected as infants, and up to 50% infected between one and four years of age develop chronic HBV; 25% of adults who become chronically infected in childhood develop cirrhosis or liver cancer.

"Children chronically infected with HBV are at great risk of developing severe liver disease and possible death due to complications from the disease," said Dr. Karen Murray, Chief of the Division of Gastroenterology and Hepatology at Seattle Children's Hospital in Washington and lead researcher of the clinical trial. "Tenofovir DF is highly effective in treating adults with chronic HBV and our trial evaluated safety and efficacy of the drug in adolescents."

This double-blind, placebo-controlled trial was conducted in 101 adolescents aged 12 to 17 years. Participants were randomized with 52 receiving a daily 300 mg dose of tenofovir DF and 54 taking a placebo for 72 weeks. A virologic response -- ability of the antiviral medication to suppress the virus in participants -- was the main outcome of this clinical trial. At the onset of the trial 91% of participants tested positive for the hepatitis B e-antigen and 85% received prior HBV therapy.

Researchers observed a virologic response in 89% of participants who received tenofovir DF, while none of the patients in the placebo group achieved HBV suppression. The drug successfully suppressed HBV and normalized alanine aminotransferase (ALT) levels in both adolescents who received no prior treatment and in those previously exposed to HBV therapy. No safety issues, such as a 6% reduction in spine bone density (safety end point), were reported. Trial participants taking tenofovir showed no resistance to the drug.

"Tenofovir DF therapy was well tolerated and effective in suppressing HBV in adolescents," concludes Dr. Murray. "Our trial demonstrates that tenofovir is a beneficial therapy for managing chronic HBV in teens." The authors note that a two-year open-label phase study will further investigate the sustained response and safety of tenofovir DF.

In an editorial also published in Hepatology, Dr. Philip Rosenthal with the University of California, San Francisco (UCSF) questions what can be done to alter the development of liver disease and liver cancer in children with chronic hepatitis B infection. "It was not long ago that drugs to treat HBV were limited and it is gratifying to see an increase in medications to combat this disease being approved for use in children and teens," said Dr. Rosenthal. "While the study by Murray et al. was limited to adolescents, future study of tenofovir DF in younger children is underway."


Story Source:

The above story is based on materials provided by Wiley. Note: Materials may be edited for content and length.


Journal Reference:

  1. Karen F. Murray, Leszek Szenborn, Jacek Wysocki, Stephen Rossi, Amoreena C. Corsa, Phillip Dinh, John McHutchison, Phillip S. Pang, Luminita M. Luminos, Malgorzata Pawlowska, Jacek Mizerski. Randomized, placebo-controlled trial of tenofovir disoproxil fumarate in adolescents with chronic hepatitis B. Hepatology, 2012; DOI: 10.1002/hep.25818

Cite This Page:

Wiley. "Adult antiviral drug effective in suppressing hepatitis B in teens." ScienceDaily. ScienceDaily, 5 December 2012. <www.sciencedaily.com/releases/2012/12/121205103205.htm>.
Wiley. (2012, December 5). Adult antiviral drug effective in suppressing hepatitis B in teens. ScienceDaily. Retrieved September 1, 2014 from www.sciencedaily.com/releases/2012/12/121205103205.htm
Wiley. "Adult antiviral drug effective in suppressing hepatitis B in teens." ScienceDaily. www.sciencedaily.com/releases/2012/12/121205103205.htm (accessed September 1, 2014).

Share This




More Health & Medicine News

Monday, September 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

We've Got Mites Living In Our Faces And So Do You

We've Got Mites Living In Our Faces And So Do You

Newsy (Aug. 30, 2014) A new study suggests 100 percent of adult humans (those over 18 years of age) have Demodex mites living in their faces. Video provided by Newsy
Powered by NewsLook.com
Liberia Continues Fight Against Ebola

Liberia Continues Fight Against Ebola

AFP (Aug. 30, 2014) Authorities in Liberia try to stem the spread of the Ebola epidemic by raising awareness and setting up sanitation units for people to wash their hands. Duration: 00:41 Video provided by AFP
Powered by NewsLook.com
California Passes 'yes-Means-Yes' Campus Sexual Assault Bill

California Passes 'yes-Means-Yes' Campus Sexual Assault Bill

Reuters - US Online Video (Aug. 30, 2014) California lawmakers pass a bill requiring universities to adopt "affirmative consent" language in their definitions of consensual sex, part of a nationwide drive to curb sexual assault on campuses. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
New Drug Could Reduce Cardiovascular Deaths

New Drug Could Reduce Cardiovascular Deaths

Newsy (Aug. 30, 2014) The new drug from Novartis could reduce cardiovascular deaths by 20 percent compared to other similar drugs. 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