Genes may affect response to different quit-smoking medications, Penn study
A study by researchers at the Transdisciplinary Tobacco Use Research Center (TTURC) of the University of Pennsylvania School of Medicine indicates that a smoker's genetic make-up may affect whether they quit or not while using either bupropion (Zyban) or nicotine replacement therapies (NRTs) such as the nicotine patch or nasal spray. The results appear in the August issue of Neuropsychopharmacology.
Lerman led a research team that completed two randomized clinical trials each with a six-month follow-up period: a double blind placebo-controlled trial of bupropion and an open-label trial of transdermal nicotine patch versus nicotine nasal spray. Both trials examined the roles of functional genetic variation in the dopamine D2 Receptor ( DRD2 ) gene called DRD2 -141C. At this location in the DRD2 gene, people carry one of two different variants, a Del C variant or an Ins C variant ( Del is for deletion and Ins is for Insertion ). The research team found that smokers with two copies of the DRD2 -141 Ins C variant were significantly more likely to be abstinent at the six-month follow-up if they used.
This research was funded by the National Cancer Institute and the National Institute on Drug Abuse and was conducted by the University of Pennsylvania Transdisciplinary Tobacco Use Research Center.
About the Abramson Cancer Center:
The Abramson Cancer Center of the University of Pennsylvania was established in 1973 as a center of excellence in cancer research, patient care, education and outreach. Today, the Abramson Cancer Center ranks as one of the nation's best in cancer care, according to U.S. News and World Report, and is one of the top five in National Cancer Institute ( NCI ) funding. It is one of only 39 NCI-designated comprehensive cancer centers in the United States. Home to one of the largest clinical and research programs in the world, the Abramson Cancer Center of the University of Pennsylvania has 275 active cancer researchers and 250 Penn physicians involved in cancer prevention, diagnosis and treatment. More information about the Abramson Cancer Center is available at: pennhealth.com/cancer
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