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Published on: September 19, 2019
Early Identification of Fragile X Syndrome through Expanded Newborn Screening
Katherine C Okoniewski1, Anne C Wheeler2, Stacey Lee3
1RTI International, Research Triangle Park, NC 27709-2194, USA. kokoniewski@rti.org.
Insights
Early identification of fragile X syndrome (FXS) is crucial for effective intervention. A new research program, Early Check, explores voluntary newborn screening to overcome current diagnostic delays.
Area of Science:
- Genetics
- Developmental Pediatrics
- Public Health
Background:
- Fragile X syndrome (FXS) research has advanced understanding but diagnosis remains delayed.
- Current average age of FXS diagnosis is 3 years, hindering early intervention.
- Interventions for FXS are most effective when initiated shortly after birth.
Purpose of the Study:
- To evaluate the feasibility and impact of newborn screening for fragile X syndrome.
- To address barriers preventing FXS inclusion in standard newborn screening panels.
- To gather data on recruitment, enrollment, testing, and follow-up for FXS newborn screening.
Main Methods:
- Implementation of a voluntary, research-based newborn screening program for FXS called Early Check in North Carolina.
- Addressing challenges identified in previous pilot studies.
- Ongoing data collection on program logistics and outcomes.
Main Results:
- The Early Check program is actively collecting data on the implementation of voluntary FXS newborn screening.
- Insights are being gained into the practicalities of screening, including recruitment and lab testing.
- The program aims to demonstrate the feasibility and potential impact of early FXS detection.
Conclusions:
- Early Check offers a novel approach to facilitate earlier identification of fragile X syndrome through newborn screening.
- The program provides a platform for continued research into the benefits of early FXS diagnosis and intervention.
- Addressing current barriers is key to integrating FXS screening into routine newborn care.
Abstract:
Over the past 20 years, research on fragile X syndrome (FXS) has provided foundational understanding of the complex experiences of affected individuals and their families. Despite this intensive focus, there has been little progress on earlier identification, with the average age of diagnosis being 3 years. For intervention and treatment approaches to have the greatest impact, they need to begin shortly after birth. To access this critical timespan, differential methods of earlier identification need to be considered, with an emerging focus on newborn screening practices. Currently, barriers exist that prevent the inclusion of FXS on standard newborn screening panels. To address these barriers, an innovative program is being implemented in North Carolina to offer voluntary screening for FXS under a research protocol, called Early Check. This program addresses the difficulties observed in prior pilot studies, such as recruitment, enrollment, lab testing, and follow-up. Early Check provides an opportunity for stakeholders and the research community to continue to gain valuable information about the feasibility and greater impact of newborn screening on the FXS population.
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