An Integrated Solution for Application of Next-Generation Sequencing in Newborn Screening

Area of Science:

• Genomics and Personalized Medicine
• Clinical Diagnostics and Genetic Testing
• Public Health and Newborn Screening

Background:

• Next-generation sequencing (NGS) significantly enhances hereditary disease diagnostics.
• Incorporating NGS into newborn screening (NBS) for actionable conditions is under active consideration.
• Evaluating an integrated NGS solution for NBS applications is crucial for advancing early disease detection.

Purpose of the Study:

• To assess the feasibility and efficiency of an integrated NGS solution for newborn screening.
• To determine the turnaround time and scalability of the proposed NGS workflow for NBS.
• To validate the accuracy of NGS in identifying genetic variants relevant to actionable newborn conditions.

Main Methods:

• Designed an NGS panel covering 155 genes associated with inborn errors of metabolism, hearing loss, severe combined immunodeficiency, and congenital hypothyroidism.
• Developed an all-in-one library preparation strategy combining multiplex PCR, target enrichment, and sample barcoding.
• Assembled a clinical genetic analysis system for streamlined bioinformatics analysis and reporting, validated with 160 known variant samples.

Main Results:

• Achieved an end-to-end turnaround time of approximately 34 hours for DNA isolation to sequencing, with bioinformatics analysis completed in 4 hours for 160 parallel samples.
• Enabled reporting of results by day 3, meeting NBS timeframes.
• Successfully confirmed all known variants and identified two large insertion/deletions in previously undiagnosed cases.

Conclusions:

• The integrated NGS solution demonstrates a practical and efficient approach for newborn screening.
• The workflow provides a reasonable turnaround time, suitable for the demands of NBS programs.
• The system is scalable and can be implemented broadly to enhance early detection of genetic diseases.