Testing and Screening for Fragile X

As Fragile X is an inherited genetic condition, if a person finds out they have the premutation or full mutation other family members may also be carriers and/or may have a Fragile X associated condition. There is also a risk of passing the Fragile X premutation or full mutation on to children. A number of reproductive options exist for planning pregnancies and testing.

Reproductive carrier screening

Genetic carrier testing helps people find out whether they have a chance of having a child with a genetic condition, such as Fragile X syndrome. Genetic carrier screening is available before pregnancy or in the early stages of pregnancy. From 1 November 2023, reproductive genetic carrier testing for Fragile X, Cystic Fibrosis and Spinal Muscular Atrophy will be be subsidised by Medicare, with the introduction of new Medicare Benefits Schedule items.

The Fragile X Association of Australia recommends Fragile X carrier testing for:

  • People with a family history of Fragile X syndrome or Fragile X-associated disorders, intellectual disability or autism spectrum disorders
  • All women considering pregnancy or in the early stages of pregnancy (during the first 12 weeks)
  • Any woman with primary ovarian insufficiency or experiencing early menopause.

Preimplantation Genetic Testing

This testing, also referred to as Preimplantation Genetic Diagnosis (PGD), is an IVF treatment and is available to people who know they have an increased risk of having a child with a genetic condition, such as Fragile X. It involves testing embryos for the condition and helps couples avoid having a child with that condition.

Testing during pregnancy

Prenatal diagnostic testing during pregnancy can determine whether a child carries the Fragile X premutation or Fragile X full mutation. Prenatal diagnostic testing procedures include chorionic villus sampling (CVS) and amniocentesis and involve taking a small sample of the placenta or amniotic fluid (fluid around the baby) and performing Fragile X testing. These procedures come with a small risk of miscarriage (~ 1 in 500 for CVS and ~ 1 in 1000 for amniocentesis). Prenatal diagnosis can be arranged through an obstetrician or through a clinical genetics service.

Testing after birth

Testing for Fragile X syndrome is not currently available as part of the newborn bloodspot screening program. If Fragile X syndrome is suspected, testing can be arranged through a general practitioner, paediatrician or clinical genetics service. Testing can be performed on blood or saliva samples.

See Testing for Fragile X


Survey for parents / carers of adults with Fragile X syndrome

FRAGILE X | ADULTS & AGEING. We're undertaking the first Australian study on the support needs, health & wellbeing of ADULTS with Fragile X syndrome. Our goal is to enhance quality of life for adults with Fragile X syndrome as they age. We invite parents or carers to participate in our SURVEY. The survey has questions about: 1. GENERAL HEALTH AND WELLBEING of the adult with Fragile X syndrome. 2. EFFECTIVENESS OF EXISTING SUPPORTS for the adult with Fragile X syndrome as they age. 3. FUTURE PLANNING concerns of families & carers who provide support 4. ANY GAPS IN SUPPORTS OR SERVICES which may impede best outcomes in care. From the information contributed through the Survey we will develop training modules for frontline carers and tools for advocacy. The Survey can be completed ONLINE, in PAPER FORM, or by PHONE. Contact us for more information - support@fragilex.org.au or 1300 394 636

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