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March 2013 - Hunter New England Health - NSW Government

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Kaleidoscope news<br />

Mothers support newborn testing for Fragile X Syndrome<br />

<strong>Hunter</strong> Genetics GOLD Service Genetic Counsellors Jackie Boyle_Louise Christie and Carolyn Rogers<br />

Fragile X Syndrome (FXS) is the most common cause of inherited<br />

intellectual disability, affecting one in 4000 males and one in 6000 females.<br />

Children with FXS do not have any physical features of the condition<br />

at birth, which means the diagnosis is often delayed until parents or<br />

health professionals become concerned about the child’s developmental<br />

milestones.<br />

In the first study of its kind in Australia, the Genetics of Learning Disability<br />

(GOLD) service at <strong>Hunter</strong> Genetics has found overwhelming support for<br />

newborn screening for FXS in postnatal mothers.<br />

Genetic Counsellor Louise Christie said worldwide, FXS testing is not<br />

currently included in routine newborn screening. In this study, mothers<br />

were offered the option of including FXS testing into their newborn’s<br />

routine newborn screening by testing DNA extracted from the ‘heel prick’<br />

sample.<br />

“<strong>New</strong>born screening for FXS can provide an earlier diagnosis, alleviating<br />

the diagnostic odyssey for parents and allowing access to earlier<br />

interventions,” Ms Christie said.<br />

“It can also inform parents and extended family members of the FXS in the<br />

family and the option of future reproductive choices.<br />

“In Australia, the mean age of diagnosis is 5.5 years and many families<br />

have a second child before the diagnosis is made,” she said<br />

The study demonstrated a high uptake of newborn testing for FXS (94%)<br />

with 2000 male and female newborns tested. Even though there is no cure<br />

for FXS, mothers considered an early diagnosis as beneficial and wanted<br />

the information to prepare for a child with additional needs.<br />

More than two thirds of mothers wanted the information to assist in future<br />

reproductive planning. Mothers showed little concern that the testing could<br />

also detect carriers of FXS and the health implications for adult carriers.<br />

The research was undertaken in collaboration with the Department of<br />

Obstetrics and Gynaecology at John <strong>Hunter</strong> Hospital, the Department of<br />

Molecular Genetics and <strong>New</strong>born Screening Program at The Children’s<br />

Hospital, Westmead and is being published as a feature article in the<br />

American Journal of Medical Genetics Part A in February <strong>2013</strong>.<br />

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hnehealth.nsw.gov.au 11

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