Precision newborn screening for lysosomal disorders

Melissa M. Minter Baerg, Stephanie D. Stoway, Jeremy Hart, Lea Mott, Dawn S. Peck, Stephanie L. Nett, Jason S. Eckerman, Jean M. Lacey, Coleman T. Turgeon, Dimitar Gavrilov, Devin Oglesbee, Kimiyo Raymond, Silvia Tortorelli, Dietrich Matern, Lars Mørkrid, Piero Rinaldo

Research output: Contribution to journalArticle

36 Scopus citations

Abstract

Purpose: The implementation of newborn screening for lysosomal disorders has uncovered overall poor specificity, psychosocial harm experienced by caregivers, and costly follow-up testing of false-positive cases. We report an informatics solution proven to minimize these issues. Methods: The Kentucky Department for Public Health outsourced testing for mucopolysaccharidosis type I (MPS I) and Pompe disease, conditions recently added to the recommended uniform screening panel, plus Krabbe disease, which was added by legislative mandate. A total of 55,161 specimens were collected from infants born over 1 year starting from February 2016. Testing by tandem mass spectrometry was integrated with multivariate pattern recognition software (Collaborative Laboratory Integrated Reports), which is freely available to newborn screening programs for selection of cases for which a biochemical second-tier test is needed. Results: Of five presumptive positive cases, one was affected with infantile Krabbe disease, two with Pompe disease, and one with MPS I. The remaining case was a heterozygote for the latter condition. The false-positive rate was 0.0018% and the positive predictive value was 80%. Conclusion: Postanalytical interpretive tools can drastically reduce false-positive outcomes, with preliminary evidence of no greater risk of false-negative events, still to be verified by long-term surveillance.

Original languageEnglish (US)
Pages (from-to)847-854
Number of pages8
JournalGenetics in Medicine
Volume20
Issue number8
DOIs
StatePublished - Aug 1 2018

Keywords

  • Krabbe disease
  • Pompe
  • collaborative laboratory integrated report
  • disease
  • mucopolysaccharidosis type I
  • newborn screening

ASJC Scopus subject areas

  • Genetics(clinical)

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    Minter Baerg, M. M., Stoway, S. D., Hart, J., Mott, L., Peck, D. S., Nett, S. L., Eckerman, J. S., Lacey, J. M., Turgeon, C. T., Gavrilov, D., Oglesbee, D., Raymond, K., Tortorelli, S., Matern, D., Mørkrid, L., & Rinaldo, P. (2018). Precision newborn screening for lysosomal disorders. Genetics in Medicine, 20(8), 847-854. https://doi.org/10.1038/gim.2017.194