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Application of a Second-tier Newborn Screening Assay for C5 Isoforms

Overview
Journal JIMD Rep
Publisher Wiley
Date 2013 Nov 7
PMID 24193437
Citations 6
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Abstract

We report a case of false-positive metabolic screening for isovaleric acidemia in a newborn due to treatment of the mother with pivalic acid containing antibiotics before delivery. By using a recently established second-tier test based on the tandem-MS technique, we could identify pivalic acid in a dried blood sample taken during routine neonatal screening. Before this second-tier test was initiated, diverse analytical procedures were performed in the baby to rule out isovaleric acidemia and carnitine supplementation was started. This caused additional psychological burden to the family. The direct use of the second-tier test would have avoided these negative consequences of a false-positive screening result.

Citing Articles

Newborn Screening for Isovaleric Acidemia: Treatment With Pivalate-Generating Antibiotics Contributed to False C5-Carnitine Positivity in a Chinese Population.

Zhou W, Huang T, Li H, Gu M Mol Genet Genomic Med. 2024; 12(11):e70034.

PMID: 39555752 PMC: 11571094. DOI: 10.1002/mgg3.70034.


Retrospective Review of Positive Newborn Screening Results for Isovaleric Acidemia and Development of a Strategy to Improve the Efficacy of Newborn Screening in the UK.

Carling R, Hedgethorne K, Chakrapani A, Hall P, Flynn N, Greenfield T Int J Neonatal Screen. 2024; 10(1).

PMID: 38535128 PMC: 10970767. DOI: 10.3390/ijns10010024.


[Development of analytics in newborn screening-from the Guthrie card to genetics].

Janzen N, Sander J Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz. 2023; 66(11):1214-1221.

PMID: 37828293 PMC: 10622357. DOI: 10.1007/s00103-023-03774-5.


A Simple Flow Injection Analysis-Tandem Mass Spectrometry Method to Reduce False Positives of C5-Acylcarnitines Due to Pivaloylcarnitine Using Reference Ions.

Hattori T, Notsu Y, Tanaka M, Matsui M, Iida T, Watanabe J Children (Basel). 2022; 9(5).

PMID: 35626871 PMC: 9139860. DOI: 10.3390/children9050694.


[Screening and clinical analysis of isovaleric acidemia newborn in Zhejiang province].

Hu Z, Yang J, Hu L, Zhao Y, Zhang C, Yang R Zhejiang Da Xue Xue Bao Yi Xue Ban. 2020; 49(5):556-564.

PMID: 33210480 PMC: 8800726. DOI: 10.3785/j.issn.1008-9292.2020.10.02.


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