ArticleMolecular genetics & genomic medicine2024
Incorporating Next-Generation Sequencing as a Second-Tier Test for Primary Carnitine Deficiency.
Article in Molecular genetics & genomic medicine, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.
What it found
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
4 citing papers in PubMed, 1 synthesis or guideline pooled it.
- From Genotype to Phenotype: Investigating SLC22A5 Variants and Their Significance in Carnitine Deficiency: A Systematic Review Study.Journal of cellular and molecular medicine · 2026Pooled it
- Incorporating Next-Generation Sequencing in Newborn Screening for Organic Acidemias.International journal of neonatal screening · 2026Article
- Benefits and pitfalls in newborn screening for carnitine uptake deficiency: a 4-year single-center experience.Orphanet journal of rare diseases · 2025Article
- Assessment and Application of Acylcarnitines Summations as Auxiliary Quantization Indicator for Primary Carnitine Deficiency.International journal of neonatal screening · 2025Article
Corrections and comments
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Authors and funding
4 authors.
Funding
Abstract
backgroundNewborn screening (NBS) for primary carnitine deficiency (PCD) has poor performance. This study aimed to evaluate the feasibility of incorporating next-generation sequencing (NGS) as a second-tier PCD test.
methodsBetween March and December 2020, 60,070 newborns were screened for inherited metabolic disorders. Newborns with free carnitine (C0) levels below 8.5 μmol/L were selected for second-tier genetic testing.
resultsIn total, 130 (0.22%) newborns with low C0 levels underwent second-tier genetic testing, 87 (66.92%) had positive genetic testing results, and 30 (23.08%) carried pathogenic variants of the SLC22A5 gene. Six newborns were diagnosed with PCD. The incidence of PCD was approximately 1 in 1:10,012 newborns. The PPV reached 20% after combining with second-tier NGS. Of the eight variants identified in patients with PCD, the three most common variants were c.760C>T (p.Arg254*), c.51C>G (p.Phe17Leu), and c.1400C>G (p.Ser467Cys). The C0 levels of patients with PCD were significantly lower than those of PCD carriers (p = 0.0026) and PCD-negative individuals (p = 0.0005).
conclusionsOur results showed that the PPV reached 20% after combining with second-tier NGS. The MS/MS-based NBS and second-tier NGS combination can effectively reduce the false-positive rate and detect PCD in patients.
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Registered trials
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