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  • Title: Effect of family history on disclosure patterns of cystic fibrosis carrier status.
    Author: Ormond KE, Mills PL, Lester LA, Ross LF.
    Journal: Am J Med Genet C Semin Med Genet; 2003 May 15; 119C(1):70-7. PubMed ID: 12704640.
    Abstract:
    As general population screening becomes more common, an increasing number of cystic fibrosis (CF) carriers will be identified who do not have a family history of CF. Whether these carriers inform their relatives of their carrier status and whether their relatives are motivated to pursue carrier screening is unknown. We surveyed CF carriers with and without a family history of CF to understand whether and how information dissemination patterns differ, why information is or is not shared, and to what extent relatives are known to undergo testing. CF carriers were identified from a general population carrier screening clinic (group B = 18) or were parents of affected children followed at a CF clinic (group A = 30). CF carriers with a family history told essentially 100% of their living parents, siblings, and half-siblings, while those without a family history told 84% of living parents and 56% of siblings (P < 0.05). Despite the high rate of information dissemination in both groups, few siblings were known to have undergone carrier screening (14/74). Significantly fewer second- and third-degree relatives were informed about carrier status or were known to have undergone carrier screening. Group A was more likely to inform second- and third-degree relatives about carrier status. Our study documents that the frequency and reasons for disclosing CF carrier status differ between individuals with and without a family history of CF despite the fact that the reproductive risks for their relatives are the same.
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