Featured Research

from universities, journals, and other organizations

Gene mutation signals a high risk of recurrence in some older acute-leukemia patients

Date:
December 12, 2011
Source:
Ohio State University Medical Center
Summary:
Older people with acute myeloid leukemia and normal looking chromosomes in their cancer cells have a higher risk of recurrence if they have mutations in the ASXL1gene, according to a new study. The study is the first to investigate the influence of these gene mutations on prognosis in these patients and in conjunction with other prognostic gene mutations. The findings could lead to more effective targeted therapies and improved cure rates for these patients.

Older people with acute myeloid leukemia and normal looking chromosomes in their cancer cells have a higher risk of recurrence if they have mutations in a gene called ASXL1, according to a new study by researchers at the Ohio State University Comprehensive Cancer Center -- Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC -- James).

The study is the first to investigate the influence of these gene mutations on prognosis in patients with cytogenetically normal acute myeloid leukemia (CN-AML), and in conjunction with other prognostic gene mutations. It also reports the first gene-expression signature for CN-AML with mutated ASXL1.

"Our findings could lead to more effective targeted therapies and improved cure rates for these patients," says principal investigator Dr. Clara D. Bloomfield, Distinguished University Professor and Ohio State University Cancer Scholar.

Bloomfield and her colleagues found that patients age 60 and older with CN-AML and ASXL1 mutations had significantly shorter survival than patients with the normal gene -- only 5 percent of patients with the mutation were alive after 3 years, compared to 23 percent of patients without the mutation. Complete remission rates were also significantly lower, at 53 percent for patients with vs. 71 percent for patients without the mutation.

The findings were presented at the 53rd Annual Meeting of the American Society of Hematology. The study's first author, Klaus H. Metzeler, MD, a research fellow at the OSUCCC -- James, also received an "Abstract Achievement Award" in recognition of his novel and clinically relevant work. At the same time, the results were published in the Society's official journal, Blood.

"Mutations in the ASXL1 gene appear to be an important marker of poor prognosis in older AML patients," says Bloomfield, who was also Metzeler's mentor. "Importantly, their negative impact was greatest in patients who, based on established genetic markers, would be expected to have favorable outcomes.

"Mutations in ASXL1 therefore identify a previously unknown high-risk subgroup among older AML patients," Bloomfield notes. "These patients do not do well with our current standard therapy, and therefore might be candidates for treatment with novel drugs in a clinical trial."

The retrospective study involved 423 patients aged 18 to 83 years with CN-AML who were treated on clinical trials.

The researchers focused on patients aged 60 years and older after discovering that ASXL1 mutationswere five times more common in that age group compared with younger patients.

The study also identified the first gene-expression signature associated with this mutated gene in CN-AML, which may provide useful insight into the biology of ASXL1-mutated AML and help design novel treatment approaches for this high-risk group of older patients.

Funding from the National Cancer Institute, the Coleman Leukemia Research Foundation, and the John B. and Jane T. McCoy Chair in Cancer Research supported this research.

Other researchers involved in this study were Heiko Becker, Kati Maharry, Michael D. Radmacher, Jessica Kohlschmidt, Krzysztof Mrózek, Deedra Nicolet, Susan P. Whitman, Yue-Zhong Wu, Sebastian Schwind, Michael A Caligiuri and Guido Marcucci of Ohio State; Bayard L. Powell, of Wake Forest University; Thomas H. Carter, of the University of Iowa; Meir Wetzler of Roswell Park Cancer Institute; Joseph O. Moore of Duke University Medical Center; Jonathan E. Kolitz of North Shore-Long Island Jewish Health System; Maria R. Baer of the University of Maryland; Andrew J. Carroll of the University of Alabama at Birmingham; and Richard A. Larson of the University of Chicago.


Story Source:

The above story is based on materials provided by Ohio State University Medical Center. Note: Materials may be edited for content and length.


Cite This Page:

Ohio State University Medical Center. "Gene mutation signals a high risk of recurrence in some older acute-leukemia patients." ScienceDaily. ScienceDaily, 12 December 2011. <www.sciencedaily.com/releases/2011/12/111212144228.htm>.
Ohio State University Medical Center. (2011, December 12). Gene mutation signals a high risk of recurrence in some older acute-leukemia patients. ScienceDaily. Retrieved September 30, 2014 from www.sciencedaily.com/releases/2011/12/111212144228.htm
Ohio State University Medical Center. "Gene mutation signals a high risk of recurrence in some older acute-leukemia patients." ScienceDaily. www.sciencedaily.com/releases/2011/12/111212144228.htm (accessed September 30, 2014).

Share This



More Health & Medicine News

Tuesday, September 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

How 'Yes Means Yes' Defines Sexual Assault

How 'Yes Means Yes' Defines Sexual Assault

Newsy (Sep. 29, 2014) — Aimed at reducing sexual assaults on college campuses, California has adopted a new law changing the standard of consent for sexual activity. Video provided by Newsy
Powered by NewsLook.com
Scientists May Have Found An Early Sign Of Pancreatic Cancer

Scientists May Have Found An Early Sign Of Pancreatic Cancer

Newsy (Sep. 29, 2014) — Researchers looked at 1,500 blood samples and determined people who developed pancreatic cancer had more branched chain amino acids. Video provided by Newsy
Powered by NewsLook.com
Colo. Doctors See Cluster of Enterovirus Cases

Colo. Doctors See Cluster of Enterovirus Cases

AP (Sep. 29, 2014) — Doctors at the Children's Hospital of Colorado say they have treated over 4,000 children with serious respiratory illnesses since August. Nine of the patients have shown distinct neurological symptoms, including limb weakness. (Sept. 29) Video provided by AP
Powered by NewsLook.com
Dr.'s Unsure of Cause of Fast-Spreading Virus

Dr.'s Unsure of Cause of Fast-Spreading Virus

AP (Sep. 29, 2014) — Doctors at the Children's Hospital of Colorado say they have treated over 4,000 children with serious respiratory illnesses since August. Nine of the patients have shown distinct neurological symptoms, including limb weakness. (Sept. 29) Video provided by AP
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:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

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