Development of DNA confirmatory and high-risk diagnostic testing for newborns using targeted next-generation DNA sequencing.
Genet Med
; 17(5): 337-47, 2015 May.
Article
in En
| MEDLINE
| ID: mdl-25255367
ABSTRACT
PURPOSE:
Genetic testing is routinely used for second-tier confirmation of newborn sequencing results to rule out false positives and to confirm diagnoses in newborns undergoing inpatient and outpatient care. We developed a targeted next-generation sequencing panel coupled with a variant processing pipeline and demonstrated utility and performance benchmarks across multiple newborn disease presentations in a retrospective clinical study.METHODS:
The test utilizes an in silico gene filter that focuses directly on 126 genes related to newborn screening diseases and is applied to the exome or a next-generation sequencing panel called NBDx. NBDx targets the 126 genes and additional newborn-specific disorders. It integrates DNA isolation from minimally invasive biological specimens, targeted next-generation screening, and rapid characterization of genetic variation.RESULTS:
We report a rapid parallel processing of 8 to 20 cases within 105 hours with high coverage on our NBDx panel. Analytical sensitivity of 99.8% was observed across known mutation hotspots. Concordance calls with or without clinical summaries were 94% and 75%, respectively.CONCLUSION:
Rapid, automated targeted next-generation sequencing and analysis are practical in newborns for second-tier confirmation and neonatal intensive care unit diagnoses, laying a foundation for future primary DNA-based molecular screening of additional disorders and improving existing molecular testing options for newborns.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Genetic Testing
/
Neonatal Screening
/
High-Throughput Nucleotide Sequencing
Type of study:
Diagnostic_studies
/
Etiology_studies
/
Prognostic_studies
/
Risk_factors_studies
Limits:
Humans
/
Newborn
Language:
En
Journal:
Genet Med
Journal subject:
GENETICA MEDICA
Year:
2015
Type:
Article
Affiliation country:
United States