Newborn Screening: Current State, Challenges, Limitations, and Future Directions

Area of Science:

• Public Health
• Genetics
• Neonatal Care

Background:

• The Newborn Screening (NBS) program in the U.S. originated in the early 1960s, initially focusing on phenylketonuria.
• Over decades, NBS has evolved to encompass a broader range of treatable disorders for all newborns.

Purpose of the Study:

• To review the critical role of NBS in public health and clinical practice for early detection, diagnosis, and management of infant conditions.
• To highlight the variability in current NBS practices across the U.S. and internationally.
• To discuss persistent challenges and limitations within NBS programs.

Main Methods:

• Review of historical development and current status of NBS programs.
• Analysis of public health and clinical implications of NBS.
• Identification of challenges including false results, consent ethics, and NICU timing.
• Exploration of future NBS advancements.

Main Results:

• NBS has expanded significantly since its inception, improving early detection of numerous disorders.
• Practices and advancements in NBS vary considerably across different regions.
• Key challenges persist, including managing false positives/negatives, ethical consent issues, and optimal screening timing in neonatal intensive care units.

Conclusions:

• NBS is a vital public health tool for early intervention in newborns.
• Despite advancements, NBS faces ongoing challenges that require attention and resolution.
• Future NBS strategies will likely incorporate next-generation sequencing and artificial intelligence for enhanced capabilities.