Assessment & Research

Parent perspectives following newborn screening resulting in diagnoses of fragile X syndrome or fragile X premutation.

Corbo et al. (2024) · Research in developmental disabilities 2024
★ The Verdict

Parents want newborn FXS screening even when the news hurts because it opens the door to early help.

✓ Read this if BCBAs who coach families after genetic diagnosis or run infant-toddler clinics.
✗ Skip if Practitioners who only serve adults with no family contact.

01Research in Context

01

What this study did

Corbo et al. (2024) talked with mothers whose babies tested positive for fragile X syndrome or premutation on the newborn screen. The team asked how moms felt right after the call and what they thought about starting services before symptoms showed up.

02

What they found

Mothers first felt shock, guilt, and worry. Still, every mom said they were glad to know early. They wanted doctors to watch development closely and start therapy as soon as delays appeared.

03

How this fits with other research

Brady et al. (2024) surveyed 774 families and found over 90% of teens and adults with FXS showed aggression linked to sensory overload and anxiety. Allyson’s moms want early action; Nancy’s data show why that matters—early sensory and anxiety care may lower later aggression.

Préfontaine et al. (2019) warned that most parents over-expect genetic tests to give both a cause and a cure. Allyson’s moms kept realistic hopes: they wanted monitoring and therapy, not magic answers.

Byra et al. (2020) showed fathers of kids with ID later report high post-traumatic growth. Pair this with Allyson’s early distress: clinicians can tell new moms that initial guilt can shift to long-term strength.

04

Why it matters

When you counsel families after a positive FXS screen, lead with two facts: early diagnosis feels scary yet valuable, and starting services before symptoms is normal. Schedule sensory and anxiety screens early to cut later problem behavior, and check parent stress at each visit—tools like the FSCI exist for this. Frame the journey as hopeful; growth data show families adapt well over time.

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02At a glance

Intervention
not applicable
Design
qualitative
Sample size
24
Population
intellectual disability, developmental delay
Finding
not reported

03Original abstract

BACKGROUND: Fragile X syndrome (FXS) is the most common inherited cause of intellectual disability. Early Check, a voluntary newborn screening study, screened 18,833 newborns for FXS over ∼3 years. Exploring parental attitudes and perspectives can provide insight to the potential future acceptability of public health screening. METHODS AND PROCEDURES: Mothers of infants who received a screen positive result for FXS (n = 6) or fragile X premutation (FXPM; n = 18) were interviewed about their perceptions and experiences. OUTCOMES AND RESULTS: Mothers of children with FXS described utility in receiving information about their child, particularly to monitor for potential developmental issues and intervene early; overall mothers did not regret participating. Mothers reported various reactions to receiving the FXS or FXPM results including (1) stress and worry; (2) guilt; (3) sadness and disappointment; (4) neutrality, relief, and acceptance; and (5) confusion and uncertainty. CONCLUSIONS AND IMPLICATIONS: Despite initial reactions such as sadness, stress, and worry, mothers found value in learning of their child's presymptomatic diagnosis of FXS, particularly the anticipated long-term benefits of early diagnosis to their child's health and wellbeing. Our results indicate that professionals returning positive newborn screening results should anticipate and prepare for reactions such as parental shock, guilt, sadness, and uncertainty. Genetic counseling and psychosocial support are critical to supporting families.

Research in developmental disabilities, 2024 · doi:10.1016/j.ridd.2024.104719