Navigation Links
Common gene variants explain 42 percent of antidepressant response
Date:3/28/2013

Philadelphia, PA, March 28, 2013 Antidepressants are commonly prescribed for the treatment of depression, but many individuals do not experience symptom relief from treatment. The National Institute of Mental Health's STAR*D study, the largest and longest study ever conducted to evaluate depression treatment, found that only approximately one-third of patients responded within their initial medication trial and approximately one-third of patients did not have an adequate clinical response after being treated with several different medications. Thus, identifying predictors of antidepressant response could help to guide the treatment of this disorder.

A new study published in Biological Psychiatry now shares progress in identifying genomic predictors of antidepressant response.

Many previous studies have searched for genetic markers that may predict antidepressant response, but have done so despite not knowing the contribution of genetic factors. Dr. Katherine Tansey of Institute of Psychiatry at King's College London and colleagues resolved to answer that question.

"Our study quantified, for the first time, how much is response to antidepressant medication influenced by an individual's genetic make-up," said Tansey.

To perform this work, the researchers estimated the magnitude of the influence of common genetic variants on antidepressant response using a sample of 2,799 antidepressant-treated subjects with major depressive disorder and genome-wide genotyping data.

They found that genetic variants explain 42% of individual differences, and therefore, significantly influence antidepressant response.

"While we know that there are no genetic markers with strong effect, this means that there are many genetic markers involved. While each specific genetic marker may have a small effect, they may add up to make a meaningful prediction," Tansey added.

"We have a very long way to go to identify genetic markers that can usefully guide the treatment of depression. There are two critical challenges to this process," said Dr. John Krystal, Editor of Biological Psychiatry. "First, we need to have genomic markers that strongly predict response or non-response to available treatments. Second, markers for non-response to available treatments also need to predict response to an alternative treatment. Both of these conditions need to be present for markers of non-response to guide personalized treatments of depression."

"Although the Tansey et al. study represents progress, it is clear that we face enormous challenges with regards to both objectives," he added. "For example, it does not yet appear that having a less favorable genomic profile is a sufficiently strong negative predictor of response to justify withholding antidepressant treatment. Similarly, there is lack of clarity as to how to optimally treat patients who might have less favorable genomic profile."

Additional research is certainly required, but scientists hope that one day, results such as these can lead to personalized treatment for depression.


'/>"/>
Contact: Rhiannon Bugno
Biol.Psych@utsouthwestern.edu
214-648-0880
Elsevier
Source:Eurekalert

Related medicine news :

1. Paranoia Common After Mugging, Study Says
2. Hospital remains most common place of death for cancer patients in England
3. Commonly used cholesterol calculation underestimates heart disease danger for many
4. Michigan hospitals national leaders in preventing common and costly urinary tract infections
5. How common is The John Next Door?
6. Complications More Common Than Thought for Type of Hip Surgery
7. Suicidal Thoughts More Common in Kids With Autism: Study
8. Nurses can play key role in reducing deaths from worlds most common diseases
9. Common erectile dysfunction drug not helpful for heart failure patients, study finds
10. Common MS drugs taken together do not reduce relapse risk
11. Study: HPV Genital Warts is Most Common Sexually Transmitted Infection in U.S. Military, polyDNA Recommends Gene-Eden-VIR Against the HPV Infection
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/22/2017)... CA (PRWEB) , ... September 22, 2017 , ... ... groceries, wearable, and more products at customers’ doorstep. According to Smart Mart, customers ... Mart has stated to offer wearable, and customers can find clothing at discounted ...
(Date:9/22/2017)... ... September 22, 2017 , ... Global Lyme Alliance ... research, education and awareness, today announced the appointment of Timothy J. Sellati, Ph.D. ... Sellati has more than 20 years of research experience with Lyme and other ...
(Date:9/21/2017)... ... September 21, 2017 , ... 38-Year-Old Plastic Surgeon Gill at Aesthetic Surgery Center ... pleased to announce that Plastic Surgeon Kiranjeet Gill has been awarded as one of ... an annual award that was started in 2003 to salute young achievers in Southwest ...
(Date:9/21/2017)... ... September 21, 2017 , ... SABRE is raising awareness about personal safety ... the end of November. , The Chicago, Illinois, based self-defense brand has been waiting ... about the ease of taking their personal safety into their own hands. , The ...
(Date:9/21/2017)... ... September 21, 2017 , ... Promotional Communication:, Keeping Up ... , In the competitive world of drug and device marketing and promotion, drug ... FDA rules. , The FDA has issued two draft guidances that are the ...
Breaking Medicine News(10 mins):
(Date:9/6/2017)... 6, 2017  Robert G. Szewc, M.D., is recognized ... in recognition of his contributions to the Medical field.  ... Nephrologist at the practice of Kidney and Hypertension Specialists, ... and hypertension solutions. He has worked in this position ... experience, as well as expertise in kidneys, hypertension, chronic ...
(Date:9/6/2017)... Sept. 6, 2017 Eli Lilly and Company ... present new data for galcanezumab and lasmiditan, two investigational ... International Headache Society (IHC) taking place Sept. 7-10 in ... will highlight new, long-term data from an open-label study ... galcanezumab (120 mg and 240 mg) for the prevention ...
(Date:9/5/2017)... 2017  Just 18 months after its February 2016 ... announce the appointment of three new senior people to ... Dominic Jones-Phillips and James Wright bring ... Tammy Wynne joins as ... writers. She has over ten years, experience in global ...
Breaking Medicine Technology: