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Family Communication and Cascade Testing for Fragile X Syndrome

  • Original Research
  • Published:
Journal of Genetic Counseling

Abstract

A total of 679 families who had at least one child with fragile X syndrome (FXS) were recruited from a research registry to participate in a survey examining cascade testing and communication about FXS. Families had a total of 1117 children (804 males, 313 females). Most families (84 %) had tested all of their children. The main reason for not testing, which did not differ by gender or age of the child, was that the child did not show signs of FXS (68 %). Families talked with their children about FXS occasionally (47 %) although 16 % said they do not talk about it. Most families (66 %) had told their children their FXS status, with males and those with the premutation being less likely to be told test results. Of those that did not, 46 % said that they would tell their child when they were old enough to understand, whereas 34 % had either decided they would not tell or were not sure if or when they were going to tell. About a quarter of respondents (28 %) indicated that no extended family members had been tested, with income and communication about FXS being the strongest predictors. Results from this large scale survey provide important data on how families communicate about FXS and reasons testing is or is not sought. This information can be used by genetic counsellors in providing follow-up to families after a FXS diagnosis.

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Acknowledgments

The authors express their grateful appreciation to the hundreds of parents who took the time to participate in this survey. We would also like to thank the National Fragile X Foundation and FRAXA Research Foundation would aided in the initial recruitment for the research registry by posting announcements on their web sites.

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Correspondence to Melissa Raspa.

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Funding

This study was funded by the Centers for Disease Control and Prevention (CDC), National Center on Birth Defects and Developmental Disabilities (NCBDDD) under Cooperative Agreement U01DD000231 to the Association of University Centers on Disabilities (AUCD), Project RTOI 2010-999-01. The content of this material does not necessarily reflect the views and policies of CDC, NCBDDD, or AUCD. Support for the preparation of the manuscript was provided by RTI International.

Conflict of Interest

Melissa Raspa, Anne Edwards, Ellen Bishop, Anne Wheeler, and Don Bailey declare that they have no conflict of interest.

Research involving human participants and/or animals

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

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Informed consent was obtained from all patients included in the study.

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Raspa, M., Edwards, A., Wheeler, A.C. et al. Family Communication and Cascade Testing for Fragile X Syndrome. J Genet Counsel 25, 1075–1084 (2016). https://doi.org/10.1007/s10897-016-9940-2

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