Journal of Genetic Counseling

, Volume 20, Issue 1, pp 49–57 | Cite as

Prevalence of Genetic Testing in CHARGE Syndrome

  • Timothy S. Hartshorne
  • Kasee K. Stratton
  • Conny M. A. van Ravenswaaij-Arts
Original Research


Parents of 145 individuals with a clinical diagnosis of CHARGE syndrome, ages 2 to 39 years, indicated in a survey whether their child had been tested for the CHD7 mutation, which is the only gene presently known to be associated with CHARGE. More than two thirds (68%) of the affected individuals had never been gene tested. Of the 46 who had been tested, 74% tested positive for the mutation. Half (50%) of those who underwent testing did so as a part of a conference blood draw by Baylor College of Medicine in 1999. Children who were tested were significantly younger than those who had not been tested. A second group of 43 parents were informally surveyed at a conference in 2009. More than half of their children had been tested, and nearly 70% were positive for the mutation. Reasons given by these parents for testing included confirming the diagnosis and assisting research. Reasons given for not testing included lack of opportunity, no known benefit, and lack of insurance coverage.


CHARGE syndrome Genetic testing CHD7 Clinical diagnosis Genetic counseling 



The authors would like to acknowledge Dr. Jorieke Bergman for her assistance with aspects of the data collection and analysis.


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Copyright information

© National Society of Genetic Counselors, Inc. 2010

Authors and Affiliations

  • Timothy S. Hartshorne
    • 1
    • 3
  • Kasee K. Stratton
    • 1
  • Conny M. A. van Ravenswaaij-Arts
    • 2
  1. 1.Central Michigan UniversityMount PleasantUSA
  2. 2.Department of GeneticsUniversity of GroningenGroningenNetherlands
  3. 3.Psychology DepartmentCentral Michigan UniversityMount PleasantUSA

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