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Older patients offer insight into the future of cystic fibrosis
Date:5/19/2010

sed as children and those diagnosed for the first time as adults comprise two distinct populations of CF patients over 40. Those diagnosed as adults usually have a genetic mutation that produces a partially functional gene and a slightly different set of symptoms from those diagnosed as children. Most commonly, they have functional pancreases and fewer digestive problems.

Dr. Nick and his colleagues analyzed epidemiological and health data on 156 CF patients over 40 year of age who receive care at National Jewish Health, the largest adult cystic fibrosis clinic in the nation. In addition, data were analyzed on nearly 3,000 patients from around the nation who were included in the Cystic Fibrosis Foundation Patient Registry from 1992-2007.

The researchers found that the fate of females changes considerably in the older CF population. It has long been recognized that a "gender gap" is present in CF, favoring males. Historically, females have been diagnosed later, had a poorer prognosis, and survived fewer years than males.

Accordingly, Dr. Nick's analysis showed that fewer females diagnosed as children survived to age 40. However, among those diagnosed as adults, females represented a significant majority, accounting for 72 percent of patients in Colorado and 54 percent nationally. Among the adult diagnosed patients, females survived on average 9 to 14 years longer than males.

The complex factors that account for the differential fate of female CF patients is not understood, although Dr. Nick believes it could be a mixture of behavioral and biological factors.

Dr. Nick's findings also indicate that patients diagnosed as adults do not really have milder diseases -- as is commonly believed -- just a delayed onset of an equally severe form of the disease. Although patients diagnosed as adults live longer than those diagnosed as children, the adult-diagnosed patients lose lung function as rapidly those diagnosed in childhood, and
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Contact: William Allstetter
allstetterw@njhealth.org
303-398-1002
National Jewish Medical and Research Center
Source:Eurekalert

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