Author(s): Miller CH, Hilgartner MW, Aledort LM
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Abstract We have examined reproduction patterns in hemophilic men and carrier women seen at a hemophilia treatment center. The study group included 309 patients with hemophilia A or B: 194 adults and 115 children from 246 pedigrees; 93\% of affected men and 96\% of parents of affected children had received genetic counseling. In the collected pedigrees, 65\% of affected males were born to women with family history of hemophilia. An additional 23\% of mothers were later shown to be carriers. Fewer than 12\% of cases could be due to a new mutation in the child. Among 209 hemophilia A carrier tests, 95\% of obligate carriers were detectable, 87\% of mothers of sporadic cases, 53\% of sisters of hemophiliacs, and 24\% of other relatives had a high risk of carriership. Of 49 high-risk women seen during or prior to pregnancy, one-half elected prenatal diagnosis. Amniocentesis was performed in 24 cases and 8 were referred for fetoscopy, resulting in 18 normal offspring. Among 25 pregnancies not tested, 14 continued and produced 3 affected males and 11 normal offspring. Of hemophilic men over age 25, 66\% have married and 41\% (62\% of those married) have had children. These observations will serve as a baseline for assessing any change in reproductive patterns occurring with the introduction of new genetic techniques.
This article was published in Am J Med Genet
and referenced in Journal of Molecular and Genetic Medicine