Navigation Links
New Bone Drug May Prevent Fractures But Raise Clot Risk

It's too soon to say if it outperforms existing drugs, expert says

WEDNESDAY, Feb. 24 (HealthDay News) -- A new drug to fight osteoporosis, the bone condition associated with aging and debilitating fractures, reduces the risk of fractures and the risk of some breast cancers, heart disease and stroke, according to a new study.

But, like other anti-osteoporosis drugs already on the market, the drug -- called lasofoxifene -- also boosts the risk of blood clots, the researchers found. Lasofoxifene, proposed brand name Fablyn, is not yet approved by the U.S. Food and Drug Administration.

Overall, lasofoxifene looks good, according to lead study author Dr. Steven Cummings, professor and director of the San Francisco Coordinating Center at the University of California San Francisco.

But Dr. Carolyn Becker, who wrote an editorial accompanying the study published in the Feb. 25 issue of the New England Journal of Medicine, is taking a wait-and-see approach. "It may turn out to be a dynamite drug, but it's not anything I would rush in to use as a clinician," she said. "There are too many unknowns."

For the study, Cummings and his team assigned 8,556 women who were aged 59 to 80 and had osteoporosis to take a daily dose of the drug (either 0.25 or 0.5 milligrams a day) or a placebo for five years. All had a bone mineral density T score of minus 2.5, considered osteoporosis.

The new drug is in a class of medications known as selective estrogen-receptor modulators (SERM), which act like estrogen in some tissues but anti-estrogen in other. "They act like estrogens when binding to bone cells and don't act like estrogen in the breast [thus not 'feeding' any cancers of the breast]," Cummings said.

Another SERM, already on the market, is raloxifene (Evista).

In the study, the researchers found that lasofoxifene "reduces the risk of all fractures (spinal and elsewhere), breast cancer, heart disease and stroke," Cummings said. "Breast cancer by more than half, nonspinal fractures by about a quarter, which is similar to what other drugs have done, stroke and heart disease by a quarter to a third."

The results he cites are all for the higher dose, 0.5 milligrams a day, when compared to placebo. The higher dose worked better, they found, and is the dose planned for clinical use.

When Cummings looked at adverse events during the follow-up, he found deaths were comparable in the high-dose and placebo group (73 and 65), but more deaths occurred in the low-dose group (90) from any cause.

More women taking the drug developed lung cancer, too -- 28 compared to four in the placebo group. Cummings said that may be related to chance.

Blood clot risk more than doubled on the drug, they found, a risk similar to what is found with estrogen and other SERMs, although the absolute risk was still small.

"The big news for osteoporosis is that lasofoxifene also prevents the fractures that cause most of the disability," Cummings said, referring to non-spinal fractures such as hip, upper arm and pelvis.

But Becker pointed out in her editorial that this effect did not kick in until five years, and the absolute risk reductions were small.

Women with osteoporosis should first consider drugs known as bisphosphonates (Fosamax and others), Cummings said, turning to SERM drugs if they are considered at higher risk.

Cummings has reported receiving consulting fees from pharmaceutical companies including Pfizer, which is developing Fablyn. Becker reports no disclosures.

More information

To learn more about medications for osteoporosis, visit the National Osteoporosis Foundation.

SOURCES: Steven R. Cummings, M.D., professor, director, San Francisco Coordinating Center, University of California, San Francisco; Carolyn Becker, M.D., associate professor, medicine, Harvard Medical School and Brigham and Women's Hospital, Boston; Feb. 25, 2010, New England Journal of Medicine

Copyright©2010 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Psychiatrys main method to prevent mistaken diagnoses of depression doesnt work: NYU study
2. Bitrex Bitter Safety Additive Exhibiting at the Safe Kids Fair 2010; Making a Bitter Face to Learn about Poisoning Prevention
3. AT&T Foundations $50,000 Donation to National Health Foundation Supports Teen Pregnancy Prevention Program
4. African-Americans attitudes about lung cancer may hinder prevention
5. Sacred Heart Medical Center Cited for Violation of Safety Standards in H1N1 Prevention
6. New Safety Bath and Sill Mats Help Prevent Slip and Fall in Bathrooms - from Martinson-Nicholls
7. Northern California Cancer Center Changes Name to Cancer Prevention Institute of California
8. VIDEO from Medialink and AAFA: Asthma PSA Reinforces Prevention of Asthma Symptoms
9. Medical Nurse Training, Inc. Partners With Healthcare Companies to Develop Corporate Branded, Accredited Programs for Patient/Bed Safety and Fall Prevention/Protection
10. Botox May Prevent Some Migraines
11. Pet Dental Month Prime Time To Schedule Preventive Annual Cleaning For Pets
Post Your Comments:
(Date:11/25/2015)... Raton, Florida (PRWEB) , ... November 25, 2015 ... ... diagnostic testing for physicians and athletic programs, launches new Wimbledon Athletics ... importance of testing young athletes for unsuspected cardiac abnormalities. About 2,000 people under ...
(Date:11/25/2015)... ... , ... SCOTTSDALE, AZ) - Today, Dr. Todd C. ... and non-surgical treatments, announced the expansion of his private practice capabilities with the ... Highly trained and nationally recognized for his natural approach, Dr. Todd Hobgood serves ...
(Date:11/25/2015)... ... , ... “While riding the bus, I saw a passenger in a wheelchair ... to be a convenient and comfortable way to protect them from bad weather, so ... safely travel during cold or inclement weather. In doing so, it ensures that the ...
(Date:11/25/2015)... ... November 25, 2015 , ... "When ... that regular bras were incredibly uncomfortable," said an inventor from Bronx, N.Y. "In ... She developed the patent-pending RECOVERY BRA for added comfort and support. The bra ...
(Date:11/25/2015)... ... November 25, 2015 , ... Bcureful—a non-profit organization devoted ... as raising public awareness of the disorder while helping to bring expert medical ... $35,000 to bolster progress at the Tuberous Sclerosis Complex Center at Ann & ...
Breaking Medicine News(10 mins):
(Date:11/24/2015)... Avery Biomedical Devices (ABD), manufacturer of the ... appointment of Anders Jonzon , MD; Ph.D. as ... Dr. Jonzon is a Physiologist and consultant ... University, Uppsala and Children,s Hospital, Karolinska, Stockholm, ... at the Cardiovascular Institute (UCSF). His research has covered ...
(Date:11/24/2015)... 24, 2015 . ... adds Latest Guidebook for Chinese Medical Device ... published in November 2015 to the medical devices ... library at . ... growing global economies with a fifth population in ...
(Date:11/24/2015)...  Ascendant Solutions, Inc. (Pink Sheets: ASDS ) ("Ascendant" ... has declared a special 1 percent stock dividend on the ... 14, 2015, to shareholders of record December 7, 2015.  The ... of common stock. --> ... endorsement of our confidence in Ascendant,s growth strategy as well ...
Breaking Medicine Technology: